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WO2025089232A1 - Composition de second agent pour agent cosmétique capillaire, agent cosmétique capillaire et kit cosmétique capillaire - Google Patents

Composition de second agent pour agent cosmétique capillaire, agent cosmétique capillaire et kit cosmétique capillaire Download PDF

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Publication number
WO2025089232A1
WO2025089232A1 PCT/JP2024/037417 JP2024037417W WO2025089232A1 WO 2025089232 A1 WO2025089232 A1 WO 2025089232A1 JP 2024037417 W JP2024037417 W JP 2024037417W WO 2025089232 A1 WO2025089232 A1 WO 2025089232A1
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Prior art keywords
agent
mass
hair cosmetic
oil
hair
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Pending
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PCT/JP2024/037417
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English (en)
Japanese (ja)
Inventor
佑実子 水野
誠 唐渡
由季 伊藤
紗也 水野
彩子 茶原
朋也 園田
由梨 村▲瀬▼
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Hoyu Co Ltd
Original Assignee
Hoyu Co Ltd
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Publication date
Priority claimed from JP2023182878A external-priority patent/JP2025072260A/ja
Priority claimed from JP2023182876A external-priority patent/JP2025072258A/ja
Priority claimed from JP2023182877A external-priority patent/JP2025072259A/ja
Application filed by Hoyu Co Ltd filed Critical Hoyu Co Ltd
Publication of WO2025089232A1 publication Critical patent/WO2025089232A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/22—Peroxides; Oxygen; Ozone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37—Esters of carboxylic acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/39—Derivatives containing from 2 to 10 oxyalkylene groups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86—Polyethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/08—Preparations for bleaching the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/10—Preparations for permanently dyeing the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/12—Preparations containing hair conditioners

Definitions

  • This first group of inventions relates to a second agent composition for hair cosmetics and a hair cosmetic. More specifically, it relates to a second agent composition for hair cosmetics that forms a water-in-oil type emulsion, and a hair cosmetic using the same.
  • This second group of inventions relates to hair cosmetic preparations. More specifically, it relates to hair cosmetic preparations that use a mixture of two or more types of agents that form different emulsified states, namely, oil-in-water type and water-in-oil type.
  • the third group of inventions relates to hair cosmetics and hair cosmetic kits. More specifically, the invention relates to hair cosmetics containing a hair cosmetic composition that forms a water-in-oil emulsified state, hair cosmetics that form a water-in-oil emulsified state, hair cosmetics to be used on hair to which a hair cosmetic composition that forms a water-in-oil emulsified state has been applied, and/or hair to which a mixture of a hair cosmetic composition that forms a water-in-oil emulsified state and a hair cosmetic composition that forms an oil-in-water emulsified state has been applied, and to a hair cosmetic kit.
  • Patent Documents 1 to 3 are known as techniques for utilizing an agent that forms a water-in-oil type emulsion in hair cosmetic compositions containing an oxidizing agent, such as hair dyes and bleaches.
  • an oxidizing agent such as hair dyes and bleaches.
  • the following Patent Documents 1 to 3 are known as hair cosmetic compositions using a mixture of two agents that form different emulsified states, that is, an oil-in-water type and a water-in-oil type.
  • the following Patent Documents 1 to 3 are known as techniques that utilize an agent that forms a water-in-oil type emulsion.
  • oxidizing agents are important components in hair cosmetics such as hair dyes and bleaches, and because of their high reactivity, they can achieve the desired performance in hair cosmetics. For this reason, among the components that make up hair cosmetics, those that destabilize the oxidizing agent are generally packaged separately from the oxidizing agent. That is, this is the reason why hair cosmetics using oxidizing agents are often made into multiple formulations. On the other hand, since many oxidizing agents used in hair cosmetics are water-soluble compounds, they are handled in an aqueous system or in an oil-in-water (O/W) emulsion state.
  • O/W oil-in-water
  • the oxidizing agent is directly contained in the external phase, so when an agent containing an oxidizing agent is manufactured, there are many opportunities for the oxidizing agent to come into contact with the inner surface of the device. For example, when the oxidizing agent comes into contact with a metal in the flow path, the metal may be oxidized, and in this case, the oxidizing agent loses its function as an oxidizing agent. That is, the oxidizing agent is consumed. In addition, there is a concern that the oxidizing agent may become unstable due to the contact, even if it does not oxidize the metal.
  • oxidizing agents can be consumed or destabilized when they come into contact with rust produced by metal oxidation.
  • metal oxidation it is necessary to maintain the oxidizing agent so that it does not lose its function.
  • the reality is that it is unavoidable to increase costs due to the handling of an oxidizing agent. Therefore, as a method for reducing the chance of the oxidizing agent coming into contact with the inner surface of the device, a method of treating the agent containing the oxidizing agent in a water-in-oil (W/O) emulsion state is considered.
  • W/O water-in-oil
  • the outer phase of the agent can be formed by the oil-based component, so the oxidizing agent can be dispersed in the oil-based component as a water-based component.
  • the emulsion state of the hair cosmetic can be selected from various viewpoints at the design stage.
  • the oil-in-water type hereinafter also simply referred to as the "O/W type”
  • the water-in-oil type hereinafter also simply referred to as the "W/O type”
  • W/O type is likely to be selected when the priority is given to the glossiness of the agent itself and the hair after dyeing.
  • the W/O type which allows the oil phase to be the external phase, is likely to be selected from the viewpoints of oxidation inhibition, container protection, odor inhibition, and skin irritation inhibition.
  • the emulsion state can be selected based on the priority of the agent, and for example, in a hair cosmetic agent consisting of multiple agents such as a hair dye or bleach, agents with different emulsion states can be used in combination.
  • the mixed agent may be applied to the hair and left to stand for a certain period of time to ensure that the agent has time to act on the hair. In such cases, it is preferable that the applied mixed agent has a moderate viscosity so that it does not drip from the hair.
  • the viscosity of the mixed agent tends to decrease, and there is a problem that it is difficult to obtain a mixed agent with the desired viscosity.
  • a problem with mixability may become apparent, in that it becomes difficult to obtain a uniform mixed agent.
  • a problem with mixability is that lumps are generated when one type of agent becomes a lump or multiple types of agents become a lump during mixing.
  • problems with mixability may become apparent, such as making it difficult to obtain a uniform mixture. That is, the problem with mixability is that lumps may form when one type of agent clumps or multiple types of agents clump together during mixing.
  • Patent Document 1 discloses a hair treatment agent (claim 1) that is characterized by comprising a first agent, which is a W/O type emulsion containing a main ingredient in the aqueous phase, and a second agent that, when mixed with the first agent, causes the first agent to change phase to an O/W type emulsion and/or causes the emulsification of the first agent, in order to solve problems such as oxidation deterioration of the main ingredient due to contact with air ([0005]), discoloration and corrosion deformation of the container due to contact with an alkaline agent ([0006]), evaporation of the alkaline agent and generation of an unpleasant odor ([0006]), and difficulty in obtaining a fragrance due to the fragrance being contained in the oil phase ([0007]).
  • a first agent which is a W/O type emulsion containing a main ingredient in the aqueous phase
  • a second agent that, when mixed with the first agent, causes the first agent to change phase to an O
  • Patent Document 2 discloses a hair treatment emulsion (claim 1) that aims to solve problems such as the difficulty of maintaining an appropriate viscosity that does not drip from hair when a large amount of surfactant is used to improve the stability of a W/O emulsion ([0005]), and the difficulty of increasing the hair dyeing power of many W/O emulsions ([0005]). ...
  • Patent Document 3 discloses a two-agent oxidative hair dye or bleach composition (claim 1) that is composed of a first agent containing an alkaline agent and a second agent containing an oxidizing agent, with the aim of providing a two-agent oxidative hair dye or bleach composition that can provide sufficient hair dyeing or bleaching properties and reduce skin irritation ([0014]), and in which one of the first and second agents is an oil-in-water (O/W) emulsion and the other is a water-in-oil (W/O) emulsion.
  • O/W oil-in-water
  • W/O water-in-oil
  • Patent Documents 1 and 2 do not mention or suggest the idea of treating an agent containing an oxidizing agent in a water-in-oil emulsion state or a specific method for doing so.
  • Patent Document 3 discloses examples of forming an agent containing an oxidizing agent into a water-in-oil emulsion (2nd Agent-3, 2nd Agent-4, 2nd Agent-5, 2nd Agent-8, 2nd Agent-9, 2nd Agent-10 to 2nd Agent-33).
  • the present invention in the first group has been made in consideration of the above problems, and aims to provide a second agent composition for hair cosmetics and a hair cosmetic having a different configuration from conventional ones, which allows an agent containing an oxidizing agent to be handled in a water-in-oil emulsion state, ensures the stability of the oxidizing agent, and can obtain the stability of the entire agent.
  • the above Patent Documents 1 and 3 do not mention or suggest any focus on or method for viscosity control when an O/W type agent and a W/O type agent are mixed.
  • the above Patent Document 2 although it has as one of its problems the prevention of dripping from hair, provides a solution in a composition with a limited amount of surfactant, as described in [0004] that "if a large amount of surfactant is used to improve the stability of the emulsion, it becomes difficult to maintain a suitable viscosity that does not drip from hair when mixed with the second agent," but does not provide a solution when a surfactant is used.
  • compositions in which a combination of an aqueous component and an oil-based component is essential a surfactant is currently naturally blended, but when an attempt is made to obtain good mixability by blending a surfactant, the formulation stability may decrease. For this reason, there is a demand for a hair cosmetic composition that combines an O/W type agent and a W/O type agent, which is capable of suppressing dripping, while also providing good mixability and a good feel on the hair after application.
  • the present invention in Group 2 has been made in consideration of the above problems, and aims to provide a hair cosmetic composition that combines an O/W type agent and a W/O type agent, which, when a mixed agent obtained by mixing the first agent and the second agent is applied to hair, prevents the mixed agent from dripping from the hair, while simultaneously achieving good mixability (preventing clumping when mixed) and a good feel on the hair after application.
  • an agent that forms a water-in-oil emulsion state can enjoy advantages that are difficult to obtain from an agent that forms an oil-in-water emulsion state, but when an agent that forms a water-in-oil emulsion state is actually used, its wash-off performance becomes a problem.
  • the present invention in group 3 has been made in consideration of the above problems, and aims to provide a hair cosmetic composition and a hair cosmetic kit that improve the rinsing performance resulting from the use of an agent that forms a water-in-oil emulsion.
  • the first group of inventions includes the following: [1] A hair cosmetic composition comprising a first agent and a second agent, the second agent comprising:
  • the second agent composition for hair cosmetics is characterized in that the second agent contains an oxidizing agent and (A) a polymer compound and is in a water-in-oil type emulsion state.
  • the second agent composition for hair cosmetics according to the above [1], comprising, as the (A) polymer compound, (A-1) an oil-soluble polymer compound and (A-2) a water-soluble polymer compound.
  • the (A) polymer compound includes (A-1) an oil-soluble polymer compound, The second agent composition for hair cosmetics according to the above item [1] or [2], wherein the content of the oil-soluble polymer compound (A-1) is 0.1 to 2.0% by mass, when the entire second agent composition for hair cosmetics is taken as 100% by mass.
  • the (A) polymer compound includes (A-1) an oil-soluble polymer compound and (A-2) a water-soluble polymer compound, The second agent composition for hair cosmetics according to any one of the above [1] to [3], wherein the ratio of the content of the oil-soluble polymer compound (A-1) to the content of the water-soluble polymer compound (A-2) is 0.05 ⁇ (A-1)/(A-2) ⁇ 4.
  • (B) A second agent composition for hair cosmetics according to any one of [1] to [4] above, which contains an oily component.
  • the second agent composition for hair cosmetics according to any one of the above [1] to [6], which contains an oily component (B), and the oily component (B) contains a silicone (B-1).
  • a hair cosmetic composition comprising a first agent and a second agent, The first agent includes an alkaline agent, A hair cosmetic composition, characterized in that the second agent is the second agent described in any one of [1] to [9] above.
  • the hair cosmetic composition according to the above [9] wherein the first agent is in an oil-in-water emulsion state.
  • the hair cosmetic composition according to the above [9] or [10] which is an oxidative hair dye or a bleaching and decolorizing agent.
  • the second group of inventions includes the following: [1] A hair cosmetic composition comprising a first agent and a second agent, the first agent contains a surfactant (A 1 ) in an amount of 1.5% by mass or more when the entire first agent is taken as 100% by mass, and is in an oil-in-water emulsion state; The hair cosmetic composition, wherein the second agent contains an oily component ( B2 ) and is in a water-in-oil type emulsified state. [2] The hair cosmetic composition according to the above [1], which contains, as the oil component (B 2 ), a higher alcohol (B 2 -1).
  • the hair cosmetic composition according to any one of the above [1] to [ 6], wherein the surfactant (A 1 ) contains two or more kinds of nonionic surfactants (A 1 -1), and the nonionic surfactants (A 1 -1) contain (A 1 -1-1) a nonionic surfactant having an HLB of less than 10, and (A 1 -1-2) a nonionic surfactant having an HLB of 10 or more.
  • the surfactant (A1) comprises two or more kinds of nonionic surfactants ( A1-1 ), the nonionic surfactants ( A1-1 ) comprising ( A1-1-1 ) a nonionic surfactant having an HLB of less than 10 and ( A1-1-2 ) a nonionic surfactant having an HLB of 10 or more, and the ratio of the content of the nonionic surfactant ( A1-1-1 ) having an HLB of less than 10 to the content of the nonionic surfactant ( A1-1-2 ) having an HLB of 10 or more satisfies (A1-1-1)/( A1-1-2 ) ⁇ 1.
  • the first agent contains an oil component (B 1 ), The hair cosmetic composition according to any one of the above [1] to [9], wherein the content of the oily component (B 1 ) is 7% by mass or more, when the entire first agent is taken as 100% by mass.
  • the hair cosmetic composition according to any one of the above [1] to [11] which is an oxidative hair dye or a bleaching agent.
  • the third group of inventions includes the following: [1] A multi-component hair cosmetic composition comprising a plurality of separate hair cosmetic compositions, A hair cosmetic composition, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state and contains (A) a nonionic surfactant. [2] A hair cosmetic composition in a water-in-oil emulsion state, A hair cosmetic composition comprising (A) a nonionic surfactant.
  • a hair cosmetic composition comprising (A) a nonionic surfactant.
  • a multi-component hair cosmetic composition composed of a plurality of separate hair cosmetic compositions;
  • the hair cosmetic composition according to the above item [3], A hair cosmetic kit, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state.
  • the second agent composition for hair cosmetics of this first group invention makes it possible to obtain stability of the entire agent while ensuring the stability of the oxidizing agent.
  • the hair cosmetic composition of the second invention group uses an O/W type agent and a W/O type agent in combination, and when the hair cosmetic composition obtained by mixing these agents is applied to hair, the hair cosmetic composition is prevented from dripping from the hair, while achieving both good mixability (prevention of clumping when mixed) and a good feel on the hair after application.
  • the hair cosmetic composition of the third invention group it is possible to improve the rinsing performance resulting from the use of an agent that forms a water-in-oil type emulsion.
  • the hair cosmetic kit of the third invention group it is possible to improve the rinsing performance resulting from the use of an agent that forms a water-in-oil type emulsified state.
  • FIG. 2 is an explanatory diagram showing an example of a comb.
  • Second agent composition for hair cosmetics is a second agent constituting a hair cosmetic comprising at least a first agent and a second agent.
  • the second agent is characterized by containing an oxidizing agent and (A) a polymeric compound, and being in a water-in-oil type emulsified state.
  • W/O type Water-in-oil type emulsion
  • W/O type Water-in-oil type emulsion
  • the oil-based component forms a continuous phase and the aqueous component is dispersed within this continuous phase.
  • the W/O type emulsified state may be determined in any manner, but for example, if an agent is dropped into water and then stirred (lightly stirred), and the agent is not dispersed into the water and remains there, it can be determined that the agent is in a W/O type emulsified state.
  • an oil-in-water type emulsion (hereinafter simply referred to as "O/W type”) is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed within this continuous phase.
  • O/W type emulsion state may be determined in any manner, but for example, if an agent is dropped into water and then stirred (lightly stirred), and the agent is dispersed in the water, it can be determined that the agent is in an O/W type emulsion state.
  • the oxidizing agent is a component that exerts an oxidizing effect, and the oxidizing effect is usually exerted by mixing with another composition (another agent) different from the second agent. That is, for example, in the case where the other composition is a first agent composition for hair cosmetics (hereinafter, also simply referred to as "first agent"), and the hair cosmetic is a two-agent type hair cosmetic consisting of the first agent and the second agent, it is preferable that the oxidizing agent is contained in the second agent but not in the first agent. Then, the oxidizing effect of the oxidizing agent is exerted by mixing the first agent and the second agent.
  • first agent a first agent composition for hair cosmetics
  • the oxidizing agent may be any type that can exert an oxidizing effect, and examples thereof include peroxide-based oxidizing agents.
  • Peroxide-based oxidizing agents are compounds having a structure represented by "-O-O-". This structure is included in inorganic compounds as a peroxide ion (O 2 2- ), and in organic compounds as a peroxide structure (-O-O-) or a percarboxylic acid structure (-CO-O-O-). These may be used alone or in combination of two or more. Among the above, inorganic compounds are preferred, and hydrogen peroxide is more preferred among the inorganic compounds described below.
  • inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusions or adducts of hydrogen peroxide, such as urea peroxide, melamine peroxide, hydrogen peroxide adducts of phosphates, and hydrogen peroxide adducts of pyrophosphates); peroxide salts (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts, and zinc salts); percarbonates (alkali metal salts such as potassium salts and sodium salts); perborates (alkali metal salts such as potassium salts and sodium salts); permanganates (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts), etc.
  • peroxides such as hydrogen peroxide (
  • examples of organic compounds among the peroxide-based oxidizing agents include percarboxylic acids such as performic acid, peracetic acid, and perbenzoic acid, and salts thereof.
  • examples of salts of percarboxylic acids include alkali metal salts such as potassium salts and sodium salts. These may be used alone or in combination of two or more.
  • non-peroxide oxidizing agents i.e., compounds not containing a structure represented by "-O-O-"
  • bromates alkali metal salts such as potassium salts and sodium salts
  • the content of the oxidizing agent in the entire second agent (100% by mass) is not limited, but the lower limit can be 0.1% by mass, further 2% by mass, and further 3% by mass.
  • the upper limit can be 30% by mass, further 20% by mass, and further 15% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 30% by mass, further 2 to 20% by mass, and further 3 to 15% by mass.
  • the second agent may be used at its original concentration, but as described above, it can be mixed with the first agent. That is, the second agent can be used as a mixture with the first agent.
  • the content ratio of the oxidizing agent in the mixture is not limited. That is, the content ratio of the oxidizing agent when used is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.05 mass%, further 1 mass%, and further 2 mass%.
  • the upper limit can be 15 mass%, further 10 mass%, and further 7.5 mass%.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.05 to 15 mass%, further 1 to 10 mass%, and further 2 to 7.5 mass%.
  • the polymer compound (A) is a compound having a high molecular weight.
  • the inclusion of the polymer compound (A) can improve the formulation stability of the agent (second agent) containing an oxidizing agent in a W/O type emulsified state.
  • the structure of the polymer compound (A) is not limited, but is usually an organic compound having a carbon skeleton (i.e., the polymer compound (A) usually does not contain silicone (C)).
  • the molecular weight is not limited, but is usually 10,000 or more.
  • the polymer compound (A) can be broadly divided into an oil-soluble polymer compound (A-1) that exhibits oil solubility and a water-soluble polymer compound (A-2) that exhibits water solubility, and it is preferable that the second agent contains at least one of these. That is, it is preferable that the polymer compound (A) contains an oil-soluble polymer compound (A-1) and/or a water-soluble polymer compound (A-2).
  • the polymer compound (A) is also referred to as “compound (A)"
  • the oil-soluble polymer compound (A-1) is also referred to as “compound (A-1)”
  • the water-soluble polymer compound (A-2) is also referred to as “compound (A-2)”.
  • oil-soluble polymer compound (A-1) is a polymer compound that dissolves in the oil phase of the second agent, which is a W/O type emulsion (i.e., dissolves in the main component of the oil phase).
  • oil-soluble polymer compound (A-1) include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), fatty acid polyesters (oil-soluble fatty acid polyesters), vinyl polymers (oil-soluble vinyl polymers), and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).
  • the cellulose derivatives include cellulose ether (oil-soluble cellulose ether), cellulose ester (oil-soluble cellulose ester), etc. These may be used alone or in combination of two or more. Also, as mentioned above, these are preferably nonionic. That is, for example, nonionic cellulose ether is preferable.
  • examples of the cellulose ether include methyl cellulose, ethyl cellulose, ethyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • examples of starch derivatives include starch fatty acid esters, dextrin fatty acid esters, etc.
  • examples include dextrin palmitate, dextrin ethylhexanoate, etc. These may be used alone or in combination of two or more.
  • examples of the fatty acid polyester include glyceryl (behenic acid/eicosane diacid), glyceryl behenate, glyceryl eicosane diacid, etc. These may be used alone or in combination of two or more kinds.
  • ethyl cellulose is particularly preferred from the viewpoint of improving the formulation stability due to its good solubility in the oil phase.
  • the water-soluble polymer compound (A-2) is a polymer compound that dissolves in the aqueous phase of the second agent, which is a W/O type emulsion (i.e., dissolves in water).
  • the water-soluble polymer compound (A-2) include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), glucose derivatives (cyclodextrin, starch), and the like. These may be used alone or in combination of two or more.
  • these water-soluble polymers are preferably ionic, and particularly preferably cationic water-soluble polymers.
  • examples of the cellulose derivatives include cellulose ether (water-soluble cellulose ether), cellulose ester (water-soluble cellulose ester), etc. These may be used alone or in combination of two or more kinds.
  • examples of the cellulose ether include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • the cellulose ether is preferably an ionic cellulose ether.
  • the ionic cellulose ether may be any of cationic cellulose ether, anionic cellulose ether, amphoteric cellulose ether, and nonionic cellulose ether, and these may be used alone or in combination of two or more.
  • cationic cellulose ether cationic water-soluble cellulose ether
  • examples of cationic cellulose ether include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10), hydroxyethyl cellulose dimethyl diallyl ammonium chloride, and the like. Among these, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred.
  • water-soluble polymers that contain polysaccharides other than cellulose in their structure and have cationic properties include dextran hydroxypropyltrimonium chloride.
  • acrylic polymers include polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution). These may be used alone or in combination of two or more.
  • Blending of polymer compound (A) The content of the polymer compound (A) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.01% by mass, further 0.5% by mass, further 0.7% by mass, further 0.9% by mass, and further 1.3% by mass.
  • the upper limit can be 15% by mass, further 7% by mass, further 4.5% by mass, further 2.5% by mass, and further 1.8% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.5 to 7% by mass, further 0.7 to 4.5% by mass, further 0.9 to 2.5% by mass, and further 1.3 to 1.8% by mass.
  • Blending of oxidizing agent and polymer compound (A) The ratio of the content of the oxidizing agent and the polymer compound (A) in the entire second agent (100 mass%) (oxidizing agent/polymer compound) is not limited, but from the viewpoint of hair dyeing power, the lower limit can be 0.5, further 1, further 2, and further 4. On the other hand, from the viewpoint of rust suppression, the upper limit can be 40, further 30, further 20, and further 15. The above upper and lower limits can be combined. That is, for example, it can be 0.5 to 40, further 1 to 30, further 2 to 20, and further 4 to 15.
  • the content ratio of the oil-soluble polymer compound (A-1) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.01% by mass, further 0.1% by mass, further 0.2% by mass, further 0.3% by mass, and further 0.4% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, further 3.0% by mass, further 2.0% by mass, and further 1.2% by mass.
  • the above-mentioned upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 10 mass%, further 0.1 to 5 mass%, further 0.2 to 3.0 mass%, further 0.3 to 2.0 mass%, and further 0.4 to 1.2 mass%.
  • the content of the water-soluble polymer compound (A-2) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.1% by mass, further 0.3% by mass, further 0.5% by mass, further 0.7% by mass, and further 0.8% by mass.
  • the upper limit can be 10% by mass, further 4% by mass, further 2.0% by mass, further 1.6% by mass, and further 1.4% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 10% by mass, further 0.3 to 4% by mass, further 0.5 to 2.0% by mass, further 0.7 to 1.6% by mass, and further 0.8 to 1.4% by mass.
  • the ratio (A-1)/(A-2) of the content ratio of each polymer compound in the entire second agent 100% by mass is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.01, further 0.1, further 0.2, further 0.3, and further 0.4.
  • the upper limit can be 5, further 3, further 1, further 0.8, and further 0.65.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 5, further 0.1 to 3, further 0.2 to 1, further 0.3 to 0.8, and further 0.4 to 0.65.
  • Oily component The second agent may contain an oily component.
  • the incorporation of an oily component can improve the formulation stability, feel (feel of the hair after application of the hair cosmetic composition), and application feel.
  • oily components include silicones, higher alcohols, hydrocarbons, oils and fats, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more. Among these, higher alcohols and silicones are preferred as oily components. By using these, the formulation stability and feel (feel of hair after application of the hair cosmetic) can be further improved.
  • the content ratio of the oil component (B) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 18% by mass, further 19% by mass, and further 20% by mass.
  • the upper limit can be 30% by mass, further 28% by mass, and further 26% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 18 to 30% by mass, further 19 to 28% by mass, and further 20 to 26% by mass.
  • the ratio (A)/(B) of the content of the polymer compound (A) in the entire second agent (100% by mass) to the content of the oil component (B) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.01, further 0.02, further 0.03, further 0.04, and further 0.05.
  • the upper limit can be 0.30, further 0.20, further 0.15, further 0.10, and further 0.08.
  • the above-mentioned upper and lower limits can be combined. That is, for example, it can be 0.01 to 0.30, further it can be 0.02 to 0.20, further it can be 0.03 to 0.15, further it can be 0.04 to 0.10, further it can be 0.05 to 0.08.
  • silicones (B-1) include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, amino-modified silicones (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymers (aminoethylaminopropyldimethicone), etc.), polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, fluorine-modified silicones, etc.
  • methylphenylpolysiloxane is preferred for the second agent, since it allows for a high degree of freedom in the amount of incorporation, from low to high, while ensuring the formulation stability of the second agent, and, particularly when incorporated in a high amount, it can impart smooth, finger-combing feel and good shine to the treated hair.
  • the content ratio of silicone (B-1) in the entire second agent 100% by mass is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.5% by mass, further 1% by mass, further 2% by mass, further 3% by mass, and further 4% by mass.
  • the upper limit can be 10% by mass, further 9% by mass, further 8% by mass, further 7% by mass, and further 6% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.5 to 10% by mass, further 1 to 9% by mass, further 2 to 8% by mass, further 3 to 7% by mass, and further 4 to 6% by mass.
  • alcohols having a carbon chain with 6 or more carbon atoms can be used as the higher alcohol.
  • higher alcohols having 8 to 40 carbon atoms are included.
  • the skeleton may be saturated or unsaturated, and may be linear or branched.
  • cetearyl alcohol lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol.
  • cetearyl alcohol lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol.
  • These may be used alone or
  • hydrocarbons examples include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more. Of these, those that are liquid at room temperature (especially 25°C) are preferred.
  • examples of fats and oils include vegetable oils (vegetable fats and oils), animal oils (animal fats and oils), and the like.
  • vegetable oils include camellia oil, rice bran oil, rice germ oil, macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil.
  • animal oils include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or in combination
  • waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugar cane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more. Of these, those that are liquid at room temperature (especially 25°C) are preferred.
  • higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (especially 25°C) are preferred.
  • the esters are diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, and myristic acid.
  • oils examples include myristyl lysate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acids (C10-30) (cholesteryl/lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, and lanolin derivatives. These oils may be used alone or in combination of two or more. Of these, those that are liquid at room temperature (particularly 25°C) are preferred.
  • the second agent does not substantially contain a surfactant. That is, when the entire second agent composition is taken as 100 mass%, the content of the surfactant is preferably 1.5 mass% or less (further, 1.0 mass% or less, further 0.5 mass% or less, further 0.1 mass% or less), or no surfactant is contained. This is because there is a concern that the inclusion of a surfactant may decrease the formulation stability.
  • a nonionic surfactant can be blended into the second agent.
  • nonionic surfactant (C) examples include ester-type nonionic surfactants, ether-type nonionic surfactants, alkyl glucosides, etc. These may be used alone or in combination of two or more. Among these, ester-type nonionic surfactants are preferred from the viewpoint of improving the cleansing properties when washing off hair cosmetics adhering to the hair.
  • ester-type nonionic surfactant examples include POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate; glyceryl mono fatty acid esters such as POE glycerin monostearate and POE glycerin monomyristate; and POE sorbitol fatty acid esters such as POE sorbitan tetraoleate, POE sorbitan hexastearate, and POE sorbitan monolaurate.
  • POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate
  • glyceryl mono fatty acid esters
  • the number of moles of POE added to the POE sorbitan fatty acid ester and the monoglyceryl mono fatty acid ester is, for example, 5 or more.
  • the number of moles of POE added to the POE sorbitol fatty acid ester is, for example, 6 or more.
  • ester-type nonionic surfactants include sorbit beeswax such as POE (6) POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid esters, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, POE reduced lanolin, etc.
  • sorbit beeswax such as POE (6) POE sorbit beeswax, polyethylene
  • POE sorbitan fatty acid ester is preferred for the second agent, and further from the viewpoint of ease of rinsing, POE sorbitan monooleate is more preferred.
  • Ether-type nonionic surfactants include POE cetyl ethers (ceteth) such as POE (5.5) cetyl ether, POE (6) cetyl ether, POE (6) cetyl ether, POE (7) cetyl ether, POE (10) cetyl ether, POE (15) cetyl ether, POE (20) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (2) cetyl ether, POE (4) cetyl ether, and POE (5) cetyl ether; POE (20) stearyl ether, POE (150) stearyl ether, and POE ( 4) POE stearyl ethers (steareth) such as stearyl ether, POE (5) stearyl ether, and POE (2) stearyl ether; POE behenyl ethers (behen
  • POE oleyl ethers such as POE (2) oleyl ether and POE (3) oleyl ether
  • POE lauryl ethers (laureths) such as POE (4.2) lauryl ether, POE (9) lauryl ether, POE (10) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, POE (2) lauryl ether and POE (3) lauryl ether
  • POE myristyl ethers such as POE (2) myristyl ether and POE (3) myristyl ether
  • POE octyldodecyl ethers such as POE (2) octyldodecyl ether and POE (5) octyldodecyl ether
  • POE hexyldecyl ethers such as POE (2) hexyldecyl ether and POE (4) hexyldecyl
  • the content of the nonionic surfactant (C) in the entire second agent (100% by mass) is not limited, but from the viewpoint of formulation stability, the lower limit can be 0.01% by mass, further 0.10% by mass, and further 0.15% by mass.
  • the upper limit can be 1.5% by mass, further 1.0% by mass, and further 0.5% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 1.5% by mass, further 0.10 to 1.0% by mass, and further 0.15 to 0.5% by mass.
  • the second agent can contain a stabilizer (D).
  • the incorporation of a stabilizer can improve the stability of the oxidizing agent.
  • the stabilizer (D) include phenoxyethanol (ethylene glycol phenyl ether), salicylic acid, salicylic acid salts, hydroxyethanediphosphonic acid, hydroxyethanediphosphonic acid salts, stannic acid, and stannic acid salts.
  • examples of cations constituting the salt include alkali metal ions and ammonium ions. These may be used alone or in combination of two or more.
  • phenoxyethanol and/or salicylic acid are preferred from the viewpoint of reducing the contribution to the stability of the formulation.
  • the second agent may contain other components in addition to the above-mentioned (A) polymer compound, (B) oil component, (C) nonionic surfactant, and (D) stabilizer.
  • examples of other components include pH adjusters, preservatives, antioxidants, dispersants, protein derivatives and amino acids, chelating agents, plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, and ultraviolet absorbers. These may be used alone or in combination of two or more.
  • the dosage form of the second agent is not limited, but can be, for example, cream, paste, liquid, gel, foam, etc.
  • the properties are not limited, and the specific viscosity is not limited, but can be, for example, 1 to 300,000 mPa ⁇ s.
  • the second agent can be adjusted to a viscous liquid. That is, it can be, for example, 500 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity can be 500 mPa ⁇ s, 1,000 mPa ⁇ s, or 5,000 mPa ⁇ s.
  • the upper limit of the viscosity can be 250,000 mPa ⁇ s, 225,000 mPa ⁇ s, or 200,000 mPa ⁇ s.
  • the upper and lower limits described above can be combined with each other. That is, for example, it can be 500 to 250,000 mPa ⁇ s, 1,000 to 225,000 mPa ⁇ s, or 5,000 to 200,000 mPa ⁇ s. Note that the above viscosity is measured at 25° C. using a B-type viscometer.
  • the packaging material for containing the second agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double can-type packaging material, an applicator, a pouch, or the like.
  • a tube-shaped packaging material is preferred from the viewpoint of improving operability, and a tube-shaped packaging material (including a tube with an inner bag inside) whose inner surface is made of aluminum is more preferred from the viewpoint of formulation stability.
  • the diameter is preferably 20 to 35 mm ( ⁇ ), and more preferably 25 to 30 mm.
  • the length is also preferably 120 to 175 mm, and more preferably 130 to 150 mm.
  • the opening diameter is preferably 5 to 10 mm ( ⁇ ), and more preferably 7.5 to 9 mm.
  • the hair cosmetic agent of the first group of the present invention is a hair cosmetic agent comprising a first agent and a second agent, characterized in that the first agent contains an alkaline agent and the second agent is the second agent described above (i.e., the second agent contains an oxidizing agent and a polymeric compound (A) and is in a W/O type emulsion state).
  • the hair cosmetic composition may be the above-mentioned second agent in which the first agent contains an alkaline agent and the second agent contains an oxidizing agent.
  • Examples of such hair cosmetic compositions include oxidative hair dyeing agents, bleaching agents, decolorizing agents, and decolorizing and decolorizing agents.
  • the second agent is a composition in a W/O type emulsified state
  • the first agent has no particular emulsified state and may be either W/O type or O/W type, but is preferably O/W type. That is, it is preferable that the first agent is in an emulsified state in which the aqueous component forms a continuous phase and the oil-based component is dispersed in the continuous phase.
  • the W/O type emulsified state of the second agent can be destroyed, and the entire mixture obtained can be made O/W type. This can improve the cleansing properties when washing off the hair cosmetic applied to the hair.
  • the emulsified state may be determined in any manner, but an agent can be determined to be in an O/W type emulsion state, for example, when the agent is dropped into water and then stirred (lightly stirred), and the agent is dispersed in the water.
  • the alkaline agent is a component that exhibits alkalinity when dissolved in water.
  • this alkaline agent coexists with an oxidizing agent, it can decompose or alter colored components such as melanin and dyes, thereby lightening or decolorizing the visible color. That is, regardless of whether or not the hair is dyed, it can bleach hair by decomposing or altering the melanin contained in the hair, and bleach dyes by decomposing or altering the dye applied to the dyed hair.
  • the alkaline agent alone has the effect of swelling hair, or has a hair swelling promoting effect that promotes this effect. Therefore, it is a component that can promote the above-mentioned effects inside the hair.
  • the alkaline agent includes organic bases, inorganic bases and salts thereof.
  • the organic base include organic amines, basic amino acids (arginine, lysine, and salts thereof, etc.), guanidine and its salts (guanidine carbonate, etc.), etc.
  • Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (2-amino-2-methyl-1-propanol, etc.), aminomethylpropanediol (2-amino-2-methyl-1,3-propanediol, etc.), and alkylamines such as monoethylamine and isopropylamine.
  • These organic bases may be used alone or in combination of two or more.
  • inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc.
  • alkali metal hydroxides such as sodium hydroxide
  • alkali metal carbonates such as sodium carbonate
  • alkali metal hydrogencarbonates such as sodium hydrogencarbonate
  • alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide
  • alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate
  • ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate.
  • These inorganic bases may be used alone or in combination of two or more.
  • the amount of the alkaline agent in the first agent is not limited, but it is sufficient that the pH of the hair cosmetic exceeds 7, and it is preferable to formulate it to be 8 or more, and more preferable to formulate it to be 9 or more. By formulating it to exceed pH 7, the bleaching effect, hair swelling effect, hair swelling promotion effect, etc., associated with the inclusion of the alkaline agent can be effectively obtained.
  • the upper limit of the pH is not limited, but it is usually formulated to be 13.5 or less, preferably 13 or less, and more preferably 12 or less. These upper and lower limit values can be arbitrarily combined.
  • the pH can be more than 7 and 13.5 or less, further 8 to 13, and further 9 to 12.
  • the pH of the hair cosmetic is the pH after mixing the first agent and the second agent, and is the pH at 25°C.
  • the content of the alkaline agent in the first agent is not limited, but the lower limit can be 0.1 mass%, 0.5 mass%, or 3 mass%, based on 100 mass% of the entire first agent.
  • the upper limit can be 17 mass%, 15 mass%, or 10 mass%. In these ranges, better hair dyeing power can be obtained.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 17 mass%, 0.5 to 15 mass%, or 3 to 10 mass%.
  • the first agent may contain other components in addition to the alkaline agent, such as dyes, solubilizers, oily components, water-soluble polymers, surfactants, preservatives, antioxidants, stabilizers, and plant extracts.
  • the dye is a component that contributes to hair dyeing, and any dye known in the art can be used. Specifically, there are oxidative dyes and direct dyes. These may be used alone or in combination of two or more.
  • the oxidation dye is composed of at least a dye intermediate among a dye intermediate and a coupler.
  • the dye intermediate is a component that develops color by oxidative polymerization in the presence of an oxidizing agent.
  • the coupler is a component that develops color by oxidative polymerization together with the dye intermediate in the presence of an oxidizing agent, and can produce a color that cannot be obtained from an oxidative polymer of only the dye intermediate.
  • Dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluenediamine), 2,2'-[(4-aminophenyl)imino]bisethanol, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1,2,4-trihydroxybenzene, o-aminophenol, p-aminophenol, and p-methylaminophenol.
  • dye intermediates include salts of the above-mentioned various compounds.
  • Salts include acid addition salts.
  • Acid addition salts include inorganic acid addition salts such as hydrochlorides and sulfates, and organic acid addition salts such as acetates. These dye intermediates and their salts may be used alone or in combination of two or more.
  • Couplers include 2,4-diaminophenoxyethanol, ⁇ -naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, m-phenylenediamine, toluene-3,4-diamine, diphenylamine, 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid, o-aminophenol, m-aminophenol, p-aminophenol, p-methylaminophenol, and the like.
  • couplers include salts of the above-mentioned various compounds.
  • Salts include acid addition salts, and the like.
  • Acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These couplers and their salts may be used alone or in combination of two or more.
  • o-aminophenol, p-aminophenol, and p-methylaminophenol can be used both as dye intermediates and as couplers.
  • compounds other than these compounds exemplified above as couplers can be used in combination as couplers.
  • compounds other than these compounds exemplified above as dye intermediates can be used in combination as dye intermediates.
  • examples of direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more.
  • examples of ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more.
  • examples of nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.
  • Acid dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Red No. 201, Red No. 203, Red No. 220, Red No. 227, Red No. 230 (1), Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 205, Orange No. 207, Orange No. 402, Green No. 3, Green No. 204, Green No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 204, Blue No. 404, Purple No. 401, Brown No. 201, Black No. 401, etc. These may be used alone or in combination of two or more.
  • Examples of the basic dye include a basic red dye, a basic orange dye, a basic yellow dye, a basic green dye, a basic blue dye, a basic purple dye, a basic brown dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the basic red dye include basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, and basic red 118.
  • Examples of the basic orange dye include basic orange 1, basic orange 2, and basic orange 31.
  • Examples of the basic yellow dye include basic yellow 11, basic yellow 28, basic yellow 40, basic yellow 57, and basic yellow 87.
  • Examples of the basic green dye include basic green 1 and basic green 4.
  • Examples of the basic blue dye include basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 75, basic blue 77, basic blue 99, and basic blue 124.
  • Examples of basic purple dyes include basic purple 1, basic purple 2, basic purple 3, basic purple 4, basic purple 14, and basic purple 16.
  • Examples of basic brown dyes include basic brown 4, basic brown 16, and basic brown 17. These dyes may be used alone or in combination of two or more.
  • HC dye examples include HC red dye, HC orange dye, HC yellow dye, HC blue dye, HC purple dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the HC red dye include HC red 1, HC red 3, HC red 7, HC red 10, HC red 11, HC red 13, HC red 14, HC red 17, HC red 18, HC red 19, HC red 20, and HC red 21.
  • examples of the HC orange dye include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7.
  • Examples of the HC yellow dye include HC yellow 2, HC yellow 4, HC yellow 5, HC yellow 7, HC yellow 9, HC yellow 11, HC yellow 13, HC yellow 16, HC yellow 18, HC yellow 6, HC yellow 10, HC yellow 12, HC yellow 14, HC yellow 15, and HC yellow 19.
  • Examples of the HC blue dye include HC blue 2, HC blue 5, HC blue 6, HC blue 8, HC blue 9, HC blue 10, HC blue 11, HC blue 12, HC blue 13, HC blue 14, HC blue 15, HC blue 16, HC blue 18, HC blue 19, and HC blue 20.
  • Examples of the HC purple dye include HC purple 1, HC purple 2, HC purple 3, and HC purple 4. These may be used alone or in combination of two or more.
  • Disperse dyes include Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, and Disperse Violet 15. These may be used alone or in combination of two or more.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dyes, betacyanin dyes, azophyllon dyes, etc.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dye
  • natural dyes include madder pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, boysenberry pigment, grape skin pigment, grape juice pigment, purple sweet potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, red yeast rice pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, sodium copper chlorophyllin, paprika pigment, lac pigment, henna, rutin, and safflower red. These may be used alone or in combination of two or more.
  • the dye content is not limited, but when the entire first agent is taken as 100% by mass, the lower limit is preferably 0.001% by mass. By making it 0.001% by mass or more, the hair dyeing effect can be effectively obtained and the color can be improved. Furthermore, the lower limit can be 0.1% by mass, and furthermore, 0.5% by mass. On the other hand, the upper limit can be 15% by mass, 10% by mass, or 6% by mass. These upper and lower limit values can be combined arbitrarily. For example, it can be 0.001 to 15% by mass, 0.1 to 10% by mass, or 0.5 to 6% by mass.
  • Solubilizer is a component that contributes to solubilizing each component contained in the first agent.
  • examples of the solubilizer include water, alcohols, and the like. These may be used alone or in combination of two or more. The use of water is preferred from the viewpoint of exhibiting excellent solubility. Furthermore, the use of water in combination with alcohols is more preferred.
  • alcohols examples include monohydric alcohols (monohydric aliphatic alcohols, monohydric aromatic alcohols, etc.), polyhydric alcohols, and ether alcohols. These may be used alone or in combination of two or more types.
  • the monohydric aliphatic alcohol preferably has 5 or less carbon atoms, and examples thereof include ethanol, n-propanol, isopropanol, etc. These may be used alone or in combination of two or more kinds.
  • examples of the monohydric aromatic alcohol include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyl glycol, ⁇ -methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, p-anisyl alcohol, etc.
  • ether alcohol which is a monohydric alcohol and has an ether bond
  • an ether alcohol having a total of three or more hydroxy groups and ether bonds is preferable, and specific examples thereof include ethoxydiglycol (diethylene glycol monoethyl ether), methoxydiglycol (diethylene glycol monomethyl ether), diethylene glycol monobutyl ether, etc.
  • the monohydric alcohol is preferably an ether alcohol, more preferably an ether alcohol having a total of three or more hydroxy groups and ether bonds, even more preferably ethoxydiglycol and/or methoxydiglycol, and particularly preferably ethoxydiglycol.
  • the valence of the polyhydric alcohol is not limited and may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a valence of 2 to 5 is preferable.
  • the number of carbon atoms in the polyhydric alcohol is not limited and, if it is a hydrocarbon group, may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a carbon number of 2 to 5 is preferable.
  • alkanediols such as ethanediol, propanediol, butanediol, and pentanediol
  • oxydialkanols such as oxydiethanol and oxydipropanol
  • ethanediols such as ethylene glycol
  • propanediols such as propane-1,2-diol and trimethylene glycol
  • butanediols such as 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol
  • pentanediols such as isopentyldiol, 1,5-pentanediol, and 1,2-pentanediol
  • alkanetriols such as glycerin, butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol, etc.), and pentanetriol (1,2,3-pentanetriol,
  • examples of ether alcohols that are polyhydric alcohols and have an ether bond include polyalkylene glycols.
  • polyalkylene glycols include polyethylene glycols.
  • the average molecular weight (number average molecular weight) of polyethylene glycol is not limited, but is usually 100 to 5000, preferably 100 to 2500, and more preferably 100 to 2000.
  • Oily components can contain an oily component.
  • oily components include higher alcohols, hydrocarbons, silicones, oils and fats, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more.
  • the types of the oily components described above are the same as those of the oily component (B) in the second agent.
  • the first agent among the above-mentioned oily components, higher alcohols (cetyl alcohol, stearyl alcohol, etc.), hydrocarbons (petrolatum, etc.), vegetable oils (camellia oil, rice bran oil, rice germ oil, etc.), silicones (amino-modified silicones (aminoethyl aminopropyl dimethicone, etc.)) and the like can be preferably used.
  • the content of the oily component in the entire first agent (100% by mass) is not limited, but the lower limit can be 0.5% by mass, further 1% by mass, further 4% by mass, and further 7% by mass.
  • the upper limit can be 30% by mass, further 20% by mass, further 17% by mass, and further 14% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.5 to 30% by mass, further 1 to 20% by mass, further 4 to 17% by mass, and further 7 to 14% by mass.
  • Water-soluble polymer examples include water-soluble natural polymers, water-soluble semi-synthetic polymers, water-soluble synthetic polymers, water-soluble inorganic polymers, etc. These may be used alone or in combination of two or more.
  • the water-soluble polymer may be blended, for example, for the purpose of adjusting the viscosity of the first agent and further the hair cosmetic agent.
  • Natural water-soluble polymers include guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, casein, albumin, collagen, dextrin, etc. These may be used alone or in combination of two or more types.
  • Examples of the semi-synthetic water-soluble polymer include a cellulose-based water-soluble polymer, a cationic guar gum, a starch phosphate ester, a propylene glycol alginate, an alginate, etc. These may be used alone or in combination of two or more kinds.
  • Examples of the cellulose-based water-soluble polymer include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, cationized cellulose, etc. These may be used alone or in combination of two or more.
  • Synthetic water-soluble polymers include polyvinyl alcohol (PVA), polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, sodium polyacrylate, polyacrylamide, polyethylene oxide, ethylene oxide-propylene oxide block copolymer, acrylic acid/alkyl acrylate copolymer, polydimethylmethylene piperidinium chloride, polyethylene glycol, and highly polymerized polyethylene glycol.
  • PVA polyvinyl alcohol
  • polyvinyl butyral polyvinyl methyl ether
  • carboxyvinyl polymer sodium polyacrylate
  • polyacrylamide polyethylene oxide
  • ethylene oxide-propylene oxide block copolymer acrylic acid/alkyl acrylate copolymer
  • acrylic acid/alkyl acrylate copolymer polydimethylmethylene piperidinium chloride
  • polyethylene glycol and highly polymerized polyethylene glycol.
  • Other examples include half esters of itaconic acid and POE alkyl ether, and cop
  • the content of the water-soluble polymer in the entire first agent (100% by mass) is not limited, but the lower limit can be 0.5% by mass, further 1% by mass, further 3% by mass, and further 5% by mass.
  • the upper limit can be 30% by mass, further 20% by mass, further 15% by mass, and further 13% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.5 to 30% by mass, further 1 to 20% by mass, further 3 to 15% by mass, and further 5 to 13% by mass.
  • surfactants examples include cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants. These surfactants may be used alone or in combination of two or more. The surfactants may be blended for the purpose of, for example, stably incorporating dyes, oily components, and the like into the first agent and further into the hair cosmetic agent. Among the above, the type of the nonionic surfactant is the same as that in the second agent.
  • Cationic surfactants include alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkyl ether quaternary ammonium salts; amine salts such as alkylamine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and arcobel tertiary amine salts; cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts; and benzethonium chloride. These may be used alone or in combination of two or more.
  • alkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts and/or dialkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts.
  • Monoalkyl type quaternary ammonium salts include behenyltrimethylammonium chloride (behentrimonium chloride), lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl (16,18)trimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride (steartrimonium chloride), stearyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, disodium chloride
  • examples of such compounds include tearyl dimethyl ammonium (distearyldimonium chloride), alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP
  • Anionic surfactants include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, ⁇ -sulfonic acid salts, N-acylamino acid surfactants, mono- or diester phosphate surfactants, sulfosuccinate esters, etc. These may be used alone or in combination of two or more. Counterions of the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, etc. These may be used alone or in combination of two or more.
  • amphoteric surfactants include amino acid-type amphoteric surfactants and betaine-type amphoteric surfactants.
  • amino acid-type amphoteric surfactants include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, sodium undecylhydroxyethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-caprylamide gel, and N-coconut oil fatty acid acyl-N'-carboxyethyl-
  • surfactants examples include glycine-type amphoteric surfactants such as disodium carboxyethyl ethylenediamine, N-coconut oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethyl ethylenediamine disodium, sodium lauryl diaminoethyl glycine, and palm oil fatty acid acyl-N-carboxyethyl-N-hydroxyethyl ethylenediamine sodium; and aminopropionic acid-type amphoteric surfactants such as sodium lauryl aminopropionate, sodium lauryl aminodipropionate, and triethanolamine lauryl aminopropionate. These may be used alone or in combination of two or more.
  • Betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine; sulfobetaine-type amphoteric surfactants such as lauryl hydroxysulfobetaine, etc. These may be used alone or in combination of two or more types.
  • the content of the surfactant in the first agent as a whole (100% by mass) is not limited, but the lower limit can be 0.01% by mass, further 0.5% by mass, and further 0.1% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 10% by mass, further 0.5 to 5% by mass, and further 0.1 to 3% by mass.
  • preservatives examples include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more. Among these, phenoxyethanol is preferably used in the present hair dye.
  • a preservative When a preservative is included, its content is not limited, but can be 0.01% by mass or more, and can be 0.1% by mass or more, based on 100% by mass of the first agent. Also, it is usually 3% by mass or less.
  • the preservative can also be blended in the second agent described above. In this case, the same type as above can be selected, and the same content can be used.
  • antioxidants examples include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.
  • Stabilizers examples include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, etc. These may be used alone or in combination of two or more.
  • Plant Extracts examples include avocado extract, amacha extract, aloe extract, apricot extract, apricot kernel extract, ginkgo extract, fennel extract, turmeric extract, scutellaria extract, phellodendron bark extract, hypericum extract, orange extract, zelkova extract, chamomile extract, chamomile extract, licorice extract, gardenia extract, kumazasa extract, grapefruit extract, mulberry extract, cowberry extract, burdock extract, bamboo extract, hawthorn extract, Japanese pepper extract, mallow extract, rehmannia extract, perilla extract, linden extract, peony extract, ginger extract, and shiitake extract.
  • extracts examples include lacava extract, horsetail extract, sage extract, hawthorn extract, thyme extract, tea extract, clove extract, Houttuynia cordata extract, hibiscus extract, hamamelis extract, parsley extract, loquat extract, loofah extract, safflower extract, peppermint extract, linden extract, hop extract, pine extract, horse chestnut extract, soapberry extract, eucalyptus extract, citron extract, coix seed extract, mugwort extract, lychee extract, lavender extract, apple extract, lemon extract, astragalus extract, rose extract, rosemary extract, and Roman chamomile extract. These may be used alone or in combination of two or more.
  • the plant extract may also be blended with the above-mentioned second agent. In this case, the same types as those mentioned above may be selected.
  • fragrances may further contain at least one component selected from fragrances, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), inorganic salts (sodium chloride, sodium carbonate, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, colorants, and ultraviolet absorbers, as well as those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types. Furthermore, further components may also be blended in the second agent described above. In this case, the same types as above can be selected.
  • the dosage form of the first agent is not limited, but can be, for example, a cream, emulsion, dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc.
  • the properties are not limited, and the specific viscosity is not limited, but can be, for example, 1 to 300,000 mPa ⁇ s.
  • the first agent is adjusted to a viscous liquid, it can be, for example, 2,000 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity can be 2,000 mPa ⁇ s, 4,000 mPa ⁇ s or more, or 8,000 mPa ⁇ s.
  • the upper limit of the viscosity can be 250,000 mPa ⁇ s, 225,000 mPa ⁇ s, or 200,000 mPa ⁇ s.
  • the upper and lower limits may be combined together.
  • the viscosity may be 2,000 to 250,000 mPa ⁇ s, 4,000 to 225,000 mPa ⁇ s, or 8,000 to 200,000 mPa ⁇ s.
  • the above viscosity is measured at 25°C using a B-type viscometer.
  • the packaging material for containing the first agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a liquid container, or the like.
  • the first and second agents of the hair cosmetic agent may be mixed before application to the hair, or may be applied separately in sequence. That is, for example, the first and second agents may be mixed on the hair.
  • the hair cosmetic agent may be applied to the hair using a tool such as a comb, brush, or spatula. Furthermore, it may be applied to the hair using the user's hands. These may be used alone or in combination of two or more.
  • the hair cosmetic agent may be applied to hair wet with water or warm water, or to dry hair.
  • hair includes, for example, hair on the head, beard, eyebrows, body hair, and the like.
  • the applicable biological hair is not limited, but it is preferably used for human hair.
  • ⁇ when applied to human hair, it may be applied to hair of any condition or color. That is, it may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like.
  • application to dyed hair includes repairing, changing, adding, and the like of the color of dyed hair.
  • the hair cosmetic agent of the second group of inventions is a hair cosmetic agent that is used by mixing a first agent and a second agent, the first agent contains a surfactant (A 1 ) in an amount of 1.5% by mass or more when the entire first agent is taken as 100% by mass, and is in an oil-in-water (O/W) emulsion state;
  • the second agent contains an oil component (B 2 ) and is in a water-in-oil (W/O) emulsion state.
  • the first agent is in an oil-in-water (O/W) emulsion state.
  • An oil-in-water (O/W) emulsion is an emulsion state in which the aqueous component forms the continuous phase and the oil component is dispersed within the continuous phase. In other words, it can be said to be an emulsion state in which the aqueous component forms the outer phase and the oil component forms the inner phase.
  • an O/W emulsion state may be determined in any manner, but for example, if the agent is dropped into water and then stirred (lightly stirred), and the agent is dispersed in the water, it can be determined that the agent is in an O/W emulsion state.
  • the second agent is in a water-in-oil (W/O) emulsion state.
  • a water-in-oil (W/O) emulsion is an emulsion state in which the oil-based component forms a continuous phase and the aqueous component is dispersed within the continuous phase.
  • W/O emulsion state may be determined in any manner, but for example, if the agent is dropped into water and then stirred (lightly stirred), and the agent is not dispersed into the water and remains there, it can be determined that the agent is in a W/O emulsion state.
  • the hair cosmetic agent is used by mixing the first agent and the second agent.
  • the emulsified state of the mixed agent (hair cosmetic agent after mixing) obtained by mixing the first agent and the second agent is not limited, and may be an O/W type emulsion state or a W/O type emulsion state.
  • the hair cosmetic agent is an oxidative hair dye agent, a bleaching agent, a dye removing agent, or a bleaching and dye removing agent
  • the first agent contains 1.5% by mass or more of a surfactant (A 1 ) when the entire first agent is taken as 100% by mass.
  • surfactant examples include nonionic surfactants (A 1-1 ), cationic surfactants, anionic surfactants, and amphoteric surfactants. These may be used alone or in combination of two or more.
  • the surfactant is blended for the purpose of, for example, stably incorporating an oily component or the like in the first agent, or for the purpose of obtaining good mixability.
  • the nonionic surfactant (A 1 -1) is preferable.
  • the use of the nonionic surfactant (A 1 -1) can improve the formulation stability (particularly when the first agent contains a dye and/or an alkaline agent) compared to the use of a surfactant other than a nonionic surfactant, and can also improve the mixability when mixed with the second agent in a W/O type emulsion state. Furthermore, it is preferable to use two or more types of nonionic surfactants (A 1 -1) in the first agent. This is because the use of two or more types of nonionic surfactants (A 1 -1) can improve the formulation stability (particularly when the first agent contains a dye and/or an alkaline agent) compared to the use of only one type, and can also improve the mixability.
  • Nonionic surfactants include ether-type nonionic surfactants, ester-type nonionic surfactants, alkyl glucosides, etc. These may be used alone or in combination of two or more. Of these, ether-type nonionic surfactants are preferred from the viewpoint of effectively preventing the formation of lumps when the first agent and the second agent are mixed. In addition, ether-type nonionic surfactants are preferred from the viewpoint of improving formulation stability (particularly when the first agent contains a dye and/or an alkali agent) and improving mixability when mixed with the second agent, which is in a W/O type emulsion state.
  • Ether-type nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene phenyl ethers, etc. These may be used alone or in combination of two or more kinds.
  • Examples of the polyoxyalkylene group in the ether-type nonionic surfactant include a polyoxyethylene group (POE), a polyoxypropylene group (POP), etc. These may be used alone or in combination of two or more kinds.
  • Examples of the alkyl group in the ether-type nonionic surfactant include cetyl, stearyl, behenyl, lauryl, myristyl, octyldodecyl, hexyldecyl, isostearyl, decyltetradecyl, etc. These may be used alone or in combination of two or more.
  • Examples of the alkenyl group in the ether-type nonionic surfactant include an oleyl group, etc.
  • alkylphenyl group in the ether-type nonionic surfactant examples include a nonylphenyl group, an octylphenyl group, etc. These may be used alone or in combination of two or more kinds.
  • the polyoxyalkylene group can be appropriately combined with the alkyl group, alkenyl group, alkylphenyl group, or the like.
  • polyoxyalkylene alkyl ethers examples include POE stearyl ether (steareth), POE cetyl ether (ceteth), POE oleyl ether (oleth), POE behenyl ether (beheneth), POE lauryl ether (laureth), POE myristyl ether, POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE-POP cetyl ether, POE-POP decyltetradecyl ether, etc. These may be used alone or in combination of two or more. From the viewpoint of mixability, POE alkylene ether is preferred, and POE stearyl ether, POE cetyl ether, and POE oleyl ether are even more preferred.
  • examples of stearyl ether include POE(2) stearyl ether, POE(4) stearyl ether, POE(5) stearyl ether, POE(20) stearyl ether, POE(150) stearyl ether, etc. These may be used alone or in combination of two or more.
  • ceteth examples include POE(2) cetyl ether, POE(4) cetyl ether, POE(5) cetyl ether, POE(5.5) cetyl ether, POE(6) cetyl ether, POE(7) cetyl ether, POE(10) cetyl ether, POE(15) cetyl ether, POE(20) cetyl ether, POE(23) cetyl ether, POE(25) cetyl ether, POE(30) cetyl ether, POE(40) cetyl ether, etc. These may be used alone or in combination of two or more.
  • oleths examples include POE oleyl ethers (oleths) such as POE (2) oleyl ether and POE (3) oleyl ether; POE (4.2) lauryl ether, POE (7) oleyl ether, POE (9) lauryl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, POE (50) oleyl ether, etc. These may be used alone or in combination of two or more.
  • POE oleyl ethers such as POE (2) oleyl ether and POE (3) oleyl ether
  • POE (4.2) lauryl ether POE (7) oleyl ether, POE (9) lauryl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, POE (50) oleyl ether, etc.
  • behenes examples include POE(2) behenyl ether, POE(3) behenyl ether, POE(5) behenyl ether, POE(6) behenyl ether, POE(10) behenyl ether, POE(20) behenyl ether, POE(30) behenyl ether, POE(150) behenyl ether, etc. These may be used alone or in combination of two or more.
  • laureths include POE(2) lauryl ether, POE(3) lauryl ether, POE(21) lauryl ether, and POE(25) lauryl ether.
  • Examples of the POE myristyl ether include POE(2) myristyl ether, POE(3) myristyl ether, etc. These may be used alone or in combination of two or more kinds.
  • Examples of POE octyldodecyl ether include POE (2) octyldodecyl ether, POE (5) octyldodecyl ether, etc. These may be used alone or in combination of two or more kinds.
  • Examples of POE hexyldecyl ether include POE (2) hexyldecyl ether, POE (4) hexyldecyl ether, etc. These may be used alone or in combination of two or more kinds.
  • Examples of the POE isostearyl ether include POE (5) isostearyl ether, etc. These may be used alone or in combination of two or more kinds.
  • Examples of POE POP cetyl ether include POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(1)POP(4) cetyl ether, etc. These may be used alone or in combination of two or more.
  • Examples of POE ⁇ POP decyl tetradecyl ether include POE(12) POP(6) decyl tetradecyl ether, etc. These may be used alone or in combination of two or more.
  • the polyoxyalkylene alkenyl ether includes POE oleyl ether (oleth), etc. These may be used alone or in combination of two or more kinds.
  • examples of the oleth include POE oleyl ethers (oleths) such as POE (2) oleyl ether, POE (3) oleyl ether, POE (4.2) lauryl ether, POE (7) oleyl ether, POE (9) lauryl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, POE (50) oleyl ether, etc. These may be used alone or in combination of two or more.
  • polyoxyalkylene alkylphenyl ethers examples include POE nonylphenyl ether, POE octylphenyl ether, etc. These may be used alone or in combination of two or more.
  • nonionic surfactants there are ester-type nonionic surfactants, POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate; glyceryl mono fatty acid esters such as POE glycerin monostearate and POE glycerin monomyristate; and POE sorbitol fatty acid esters such as POE sorbitan tetraoleate, POE sorbitan hexastearate, and POE sorbitan monolaurate.
  • POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate
  • the number of moles of POE added in POE sorbitan fatty acid esters and monoglyceryl mono fatty acid esters is, for example, 5 or more.
  • the number of moles of POE added in POE sorbitan fatty acid esters is, for example, 6 or more.
  • ester-type nonionic surfactants include sorbit beeswax such as POE (6) POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid esters, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, and POE reduced lanolin. These may be used alone or in combination of two or more.
  • the content ratio of the nonionic surfactant (A 1 -1) in the entire first agent (100 mass%) is not limited, but when the surfactant contained in the first agent is a nonionic surfactant (A 1 -1), the lower limit is 1.5 mass% or more.
  • This content ratio can be further 1.7 mass% or more, further 1.9 mass% or more, further 2.0 mass% or more, further 2.1 mass% or more, and further 2.2 mass% or more.
  • the content ratio of the nonionic surfactant (A 1 -1) in the first agent is not limited, but the upper limit can be 10 mass% or less, further 8 mass% or less, further 6 mass% or less, further 5 mass% or less, and further 4 mass% or less.
  • the above-mentioned upper and lower limits can be each combination. That is, for example, it can be 1.5 to 10 mass%, further it can be 1.7 to 8 mass%, further it can be 1.9 to 8 mass%, further it can be 2.0 to 6 mass%, further it can be 2.1 to 5 mass%, further it can be 2.2 to 4 mass%, and further it can be 1.5 to 5 mass%, further it can be 2.0 to 4 mass%, further it can be 2.2 to 4 mass%.
  • the nonionic surfactant (A 1 -1) is used in the first agent, as described above, it is preferable to use two or more types in combination rather than using only one type. In particular, it is preferable to use two types with different HLBs in combination from the viewpoint of mixability, and more specifically, it is preferable to use two types in combination, including a nonionic surfactant (A 1 -1-1) with an HLB of less than 10 and a nonionic surfactant (A 1 -1-2) with an HLB of 10 or more.
  • examples of the (A 1 -1-1) nonionic surfactant having an HLB of less than 10 include steareth-1 to 5, ceteth-1 to 5, oleth-1 to 5, beheneth-1 to 5, laureth-1 to 3, cetreth-1 to 4, etc. These may be used alone or in combination of two or more kinds.
  • examples of the (A 1 -1-2) nonionic surfactants having an HLB of 10 or more include steareth-7 to 50, ceteth-6 to 50, oleth-7 to 100, beheneth-10 to 50, laureth-5 to 50, cetoreth-7 to 50, etc. These may be used alone or in combination of two or more kinds.
  • HLB value is a value that indicates the degree of affinity of a surfactant for water and oil (organic compounds insoluble in water).
  • the HLB value ranges from 0 to 20; the closer to 0, the higher the lipophilicity, and the closer to 20, the higher the hydrophilicity.
  • the HLB value is measured according to "20.3.1 Actual measurement of HLB value by emulsification method" (pages 854-855) described in "Handbook - Cosmetics and Pharmaceutical Raw Materials - Revised Edition (published February 1, 1977, Nikko Chemicals Co., Ltd.)".
  • the method for measuring the HLB value follows this method.
  • the content ratio (A 1 -1-1)/(A 1 -1-2) is not limited, but from the viewpoint of effectively suppressing the formation of lumps when the first agent and the second agent are mixed, it is preferable that (A 1 -1-1)/(A 1 -1-2) ⁇ 1.
  • the lower limit can be 0.01 or more, further 0.1 or more, further 0.2 or more, and further 0.3 or more.
  • the upper limit can be 1.1 or less, further 0.9 or less, further 0.7 or less, and further 0.5 or less.
  • the above-mentioned upper and lower limits can be each combination. That is, for example, it can be 0.01.5 to 1.1, further it can be 0.1 to 0.9, further it can be 0.2 to 0.7, and further it can be 0.3 to 0.5.
  • examples of cationic surfactants include alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkyl ether quaternary ammonium salts; amine salts such as alkyl amine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and arcobel tertiary amine salts; cyclic quaternary ammonium salts such as alkyl pyridinium salts and alkyl isoquinolium salts; and benzethonium chloride. These may be used alone or in combination of two or more. By using cationic surfactants in combination, the mixability can be further improved.
  • alkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts and/or dialkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts.
  • Monoalkyl type quaternary ammonium salts include behenyltrimethylammonium chloride (behentrimonium chloride), lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl (16,18)trimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride (steartrimonium chloride), stearyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, disodium chloride
  • examples of such compounds include tearyl dimethyl ammonium (distearyldimonium chloride), alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP
  • anionic surfactants include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, ⁇ -sulfonic acid salts, N-acylamino acid type surfactants, mono- or diester phosphate type surfactants, sulfosuccinate esters, and the like. These may be used alone or in combination of two or more. Examples of counter ions of the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, and the like. These may be used alone or in combination of two or more.
  • amphoteric surfactants include amino acid type amphoteric surfactants and betaine type amphoteric surfactants.
  • amino acid type amphoteric surfactants include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, sodium undecylhydroxyethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-caprylamide gel, and N-coconut oil fatty acid acyl-N'-carbox
  • surfactants examples include glycine-type amphoteric surfactants such as disodium carboxyethyl ethylenediamine, N-coconut oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethyl ethylenediamine disodium, sodium lauryl diaminoethyl glycine, and palm oil fatty acid acyl-N-carboxyethyl-N-hydroxyethyl ethylenediamine sodium; and aminopropionic acid-type amphoteric surfactants such as sodium lauryl aminopropionate, sodium lauryl aminodipropionate, and triethanolamine lauryl aminopropionate. These may be used alone or in combination of two or more.
  • betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine; and sulfobetaine-type amphoteric surfactants such as lauryl hydroxysulfobetaine. These may be used alone or in combination of two or more.
  • aminoacetic acid betaine-type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl
  • the content of the surfactant in the first agent as a whole (100% by mass) is not limited, but the lower limit is 0.01% by mass or more from the viewpoint of mixability. This content can be further set to 0.05% by mass or more, and further set to 0.1% by mass or more.
  • the content of the surfactant in the first agent is not limited, but the upper limit can be set to 15% by mass or less, further set to 10% by mass or less, and further set to 5% by mass or less from the viewpoint of hair dyeing ability, de-dyeing ability, formulation stability, and mixability.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be set to 0.01 to 15% by mass, further set to 0.05 to 10% by mass, and further set to 0.1 to 5% by mass.
  • Oily component (B 1 ) The first agent may contain an oil component (B 1 ) in addition to the above-mentioned surfactant.
  • the incorporation of the oil component (B 1 ) can improve the formulation stability, improve the feel to the touch, and improve the application feel.
  • examples of the oil component (B 1 ) include higher alcohols, hydrocarbons, fats and oils, silicones, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more.
  • the oil component (B 1 ) is preferably higher alcohols, hydrocarbons, fats and oils, or silicones.
  • alcohols with a carbon chain containing 6 or more carbon atoms can be used as the higher alcohol.
  • higher alcohols containing 8 to 40 carbon atoms can be used.
  • the skeleton can be saturated or unsaturated, and can be linear or branched.
  • cetearyl alcohol lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol. These can be used alone or in combination of two or more. Of these, cetanol and stearyl alcohol are preferred for the first agent.
  • hydrocarbons examples include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more. Of these, petrolatum is preferred for the first agent.
  • examples of fats and oils include vegetable oils (vegetable fats and oils), animal oils (animal fats and oils), and the like.
  • vegetable oils include camellia oil, rice bran oil, rice germ oil, macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil.
  • animal oils examples include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or in combination of two or more kinds. Among these, in the first agent, vegetable oils are preferred, and camellia oil, rice bran oil, and rice germ oil are more preferred.
  • silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, amino-modified silicones (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymers (aminoethylaminopropyldimethicone), etc.), polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones.
  • dimethylpolysiloxane dime
  • methylphenylpolysiloxane decamethylcyclopenta
  • dimethicone and amino-modified silicones are preferred for the first agent, and highly polymerized methylpolysiloxane and aminoethylaminopropyldimethicone are more preferred.
  • waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more types.
  • higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more.
  • the esters are diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, and myristic acid.
  • Examples include myristyl lacrysate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acids (C10-30) (cholesteryl/lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, and lanolin derivatives. These may be used alone or in combination of two or more.
  • the content ratio of the oil component (B 1 ) in the entire first agent 100% by mass is not limited, but the lower limit can be 1% by mass or more, further 2% by mass or more, further 5% by mass or more, further 7% by mass or more, and further 9% by mass or more. In particular, when the content is 7% by mass or more, the dripping suppression effect and the clumping suppression effect are excellent.
  • the upper limit can be 35% by mass or less, preferably 30% by mass or less, further preferably 25% by mass or less, further preferably 20% by mass or less, and further preferably 17% by mass or less.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 1 to 35% by mass, further 2 to 30% by mass, further 5 to 25% by mass, further 7 to 20% by mass, and further 9 to 17% by mass.
  • the first agent may contain other components in addition to the above-mentioned surfactant (A 1 ) and oil component (B 1 ).
  • examples of other components include an alkali agent, a dye, a solubilizer, a water-soluble polymer, a preservative, an antioxidant, a stabilizer, and a plant extract.
  • the alkaline agent is a component that exhibits alkalinity in a water-soluble state.
  • the alkaline agent can be mixed with the first agent and the second agent, and the alkaline agent and the oxidizing agent coexist to decompose or alter colored components such as melanin and dyes, thereby lightening or decolorizing the visible color. That is, regardless of whether or not the hair is dyed, the hair can be bleached by decomposing or altering the melanin contained in the hair, and the dye can be bleached by decomposing or altering the dye applied to the dyed hair.
  • the alkaline agent alone has the effect of swelling the hair, or has a hair swelling promoting effect that promotes this effect. Therefore, it is a component that can promote the above-mentioned effects inside the hair.
  • the alkaline agent includes organic bases, inorganic bases and salts thereof.
  • the organic base include organic amines, basic amino acids (arginine, lysine, and salts thereof, etc.), guanidine and its salts (guanidine carbonate, etc.), etc.
  • Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (2-amino-2-methyl-1-propanol, etc.), aminomethylpropanediol (2-amino-2-methyl-1,3-propanediol, etc.), and alkylamines such as monoethylamine and isopropylamine.
  • These organic bases may be used alone or in combination of two or more.
  • inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc.
  • alkali metal hydroxides such as sodium hydroxide
  • alkali metal carbonates such as sodium carbonate
  • alkali metal hydrogencarbonates such as sodium hydrogencarbonate
  • alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide
  • alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate
  • ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate.
  • These inorganic bases may be used alone or in combination of two or more.
  • the content is not limited, but it may be contained so that the pH of the hair cosmetic agent exceeds 7, may be contained so that the pH is 8 or more, or may be contained so that the pH is 9 or more.
  • the upper limit of the pH is not limited, but it may be contained so that the pH is usually 13.5 or less, may be contained so that the pH is 13 or less, or may be contained so that the pH is 12 or less.
  • the hair cosmetic agent is a hair dye, bleach, decolorizing agent, bleaching/decolorizing agent, or other agent, the bleaching effect, hair swelling effect, hair swelling promotion effect, etc., associated with the inclusion of an alkaline agent can be obtained more effectively in these ranges.
  • the pH can be more than 7 and 13.5 or less, or further 8 to 13, or further 9 to 12.
  • the pH of the hair cosmetic agent is the pH after the first agent and the second agent are mixed, and is the pH at 25°C.
  • the content of the alkaline agent in the first agent is not limited, but the lower limit can be 0.1% by mass or more, 0.5% by mass or more, or 3% by mass or more, based on 100% by mass of the entire first agent.
  • the upper limit can be 17% by mass or less, 15% by mass or less, or 10% by mass or less. In these ranges, better hair dyeing power can be obtained.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 17% by mass, 0.5 to 15% by mass, or 3 to 10% by mass.
  • the dye may be contained together with the alkaline agent.
  • the dye may be contained in either the first or second agent, but is preferably contained in the first agent.
  • the dye is a component that contributes to hair dyeing, and any dye that has been known in the art may be used. Specific examples include oxidation dyes and direct dyes. These may be used alone or in combination of two or more.
  • the oxidation dye is composed of at least a dye intermediate among a dye intermediate and a coupler.
  • the dye intermediate is a component that develops color by oxidative polymerization in the presence of an oxidizing agent.
  • the coupler is a component that develops color by oxidative polymerization together with the dye intermediate in the presence of an oxidizing agent, and can produce a color that cannot be obtained from an oxidative polymer of only the dye intermediate.
  • Dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), 2,2'-[(4-aminophenyl)imino]bisethanol, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1,2,4-trihydroxybenzene, o-aminophenol, p-aminophenol, and p-methylaminophenol.
  • dye intermediates include salts of the above-mentioned various compounds.
  • Salts include acid addition salts.
  • Acid addition salts include inorganic acid addition salts such as hydrochlorides and sulfates, and organic acid addition salts such as acetates. These dye intermediates and their salts may be used alone or in combination of two or more.
  • Couplers include 2,4-diaminophenoxyethanol, ⁇ -naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, m-phenylenediamine, toluene-3,4-diamine, diphenylamine, 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid, o-aminophenol, m-aminophenol, p-aminophenol, p-methylaminophenol, and the like.
  • couplers include salts of the above-mentioned various compounds.
  • Salts include acid addition salts, and the like.
  • Acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These couplers and their salts may be used alone or in combination of two or more.
  • o-aminophenol, p-aminophenol, and p-methylaminophenol can be used both as dye intermediates and as couplers.
  • compounds other than these compounds exemplified above as couplers can be used in combination as couplers.
  • compounds other than these compounds exemplified above as dye intermediates can be used in combination as dye intermediates.
  • examples of direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more.
  • examples of ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more.
  • examples of nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.
  • Acidic dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Red No. 201, Red No. 203, Red No. 220, Red No. 227, Red No. 230 (1), Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 205, Orange No. 207, Orange No. 402, Green No. 3, Green No. 204, Green No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 204, Blue No. 404, Purple No. 401, Brown No. 201, Black No. 401, etc. These may be used alone or in combination of two or more.
  • Examples of the basic dye include a basic red dye, a basic orange dye, a basic yellow dye, a basic green dye, a basic blue dye, a basic purple dye, a basic brown dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the basic red dye include basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, and basic red 118.
  • Examples of the basic orange dye include basic orange 1, basic orange 2, and basic orange 31.
  • Examples of the basic yellow dye include basic yellow 11, basic yellow 28, basic yellow 40, basic yellow 57, and basic yellow 87.
  • Examples of the basic green dye include basic green 1 and basic green 4.
  • Examples of the basic blue dye include basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 75, basic blue 77, basic blue 99, and basic blue 124.
  • Examples of basic purple dyes include basic purple 1, basic purple 2, basic purple 3, basic purple 4, basic purple 14, and basic purple 16.
  • Examples of basic brown dyes include basic brown 4, basic brown 16, and basic brown 17. These dyes may be used alone or in combination of two or more.
  • HC dye examples include HC red dye, HC orange dye, HC yellow dye, HC blue dye, HC purple dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the HC red dye include HC red 1, HC red 3, HC red 7, HC red 10, HC red 11, HC red 13, HC red 14, HC red 17, HC red 18, HC red 19, HC red 20, and HC red 21.
  • examples of the HC orange dye include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7.
  • Examples of the HC yellow dye include HC yellow 2, HC yellow 4, HC yellow 5, HC yellow 7, HC yellow 9, HC yellow 11, HC yellow 13, HC yellow 16, HC yellow 18, HC yellow 6, HC yellow 10, HC yellow 12, HC yellow 14, HC yellow 15, and HC yellow 19.
  • Examples of the HC blue dye include HC blue 2, HC blue 5, HC blue 6, HC blue 8, HC blue 9, HC blue 10, HC blue 11, HC blue 12, HC blue 13, HC blue 14, HC blue 15, HC blue 16, HC blue 18, HC blue 19, and HC blue 20.
  • Examples of the HC purple dye include HC purple 1, HC purple 2, HC purple 3, and HC purple 4. These may be used alone or in combination of two or more.
  • Disperse dyes include Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, and Disperse Violet 15. These may be used alone or in combination of two or more.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dyes, betacyanin dyes, azophyllon dyes, etc.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dye
  • natural dyes include madder pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, boysenberry pigment, grape skin pigment, grape juice pigment, purple sweet potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, red yeast rice pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, sodium copper chlorophyllin, paprika pigment, lac pigment, henna, rutin, and safflower red. These may be used alone or in combination of two or more.
  • the dye content is not limited, but if the entire first agent is taken as 100% by mass, the lower limit can be 0.01% by mass or more, 0.1% by mass or more, and even 0.5% by mass or more.
  • the upper limit can be 15% by mass or less, 10% by mass or less, or 6% by mass or less.
  • Solubilizer is a component that contributes to solubilizing each component contained in the first agent.
  • examples of the solubilizer include water, alcohols, and the like. These may be used alone or in combination of two or more. The use of water is preferred from the viewpoint of exhibiting excellent solubility.
  • the alcohols include monohydric alcohols, polyhydric alcohols, and ether alcohols. These may be used alone or in combination of two or more.
  • the monohydric lower alcohol preferably has 5 or less carbon atoms, and examples thereof include ethanol, n-propanol, isopropanol, etc. These may be used alone or in combination of two or more kinds.
  • examples of the monohydric aromatic alcohol include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyl glycol, ⁇ -methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, p-anisyl alcohol, etc.
  • ether alcohol which is a monohydric alcohol and has an ether bond
  • an ether alcohol having a total of three or more hydroxy groups and ether bonds is preferable, and specific examples thereof include ethoxydiglycol (diethylene glycol monoethyl ether), methoxydiglycol (diethylene glycol monomethyl ether), diethylene glycol monobutyl ether, etc.
  • the monohydric alcohol is preferably an ether alcohol, more preferably an ether alcohol having a total of three or more hydroxyl groups and ether bonds, even more preferably ethoxydiglycol and/or methoxydiglycol, and particularly preferably ethoxydiglycol.
  • the valence of the polyhydric alcohol is not limited and may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a valence of 2 to 5 is preferable.
  • the number of carbon atoms in the polyhydric alcohol is not limited and, if it is a hydrocarbon group, may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a carbon number of 2 to 5 is preferable.
  • alkanediols such as ethanediol, propanediol, butanediol, and pentanediol
  • oxydialkanols such as oxydiethanol and oxydipropanol
  • ethanediols such as ethylene glycol
  • propanediols such as propane-1,2-diol and trimethylene glycol
  • butanediols such as 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol
  • pentanediols such as isopentyldiol, 1,5-pentanediol, and 1,2-pentanediol
  • alkanetriols such as glycerin, butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol, etc.), and pentanetriol (1,2,3-pentanetriol,
  • examples of ether alcohols that are polyhydric alcohols and have an ether bond include polyalkylene glycols.
  • polyalkylene glycols include polyethylene glycols.
  • the average molecular weight (number average molecular weight) of polyethylene glycol is not limited, but is usually 100 to 5000, preferably 100 to 2500, and more preferably 100 to 2000.
  • Water-soluble polymer examples include water-soluble natural polymers, water-soluble semi-synthetic polymers, water-soluble synthetic polymers, water-soluble inorganic polymers, etc. These may be used alone or in combination of two or more.
  • the water-soluble polymer may be blended, for example, for the purpose of adjusting the viscosity of the first agent and further the hair cosmetic agent.
  • Natural water-soluble polymers include guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, casein, albumin, collagen, dextrin, etc. These may be used alone or in combination of two or more types.
  • Examples of the semi-synthetic water-soluble polymer include a cellulose-based water-soluble polymer, a cationic guar gum, a starch phosphate ester, a propylene glycol alginate, an alginate, etc. These may be used alone or in combination of two or more kinds.
  • Examples of the cellulose-based water-soluble polymer include hydroxyethyl cellulose, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, cationized cellulose, etc. These may be used alone or in combination of two or more.
  • Synthetic water-soluble polymers include polyvinyl alcohol (PVA), polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, sodium polyacrylate, polyacrylamide, polyethylene oxide, ethylene oxide-propylene oxide block copolymer, acrylic acid/alkyl acrylate copolymer, polydimethylmethylene piperidinium chloride, polyethylene glycol, and highly polymerized polyethylene glycol.
  • PVA polyvinyl alcohol
  • polyvinyl butyral polyvinyl methyl ether
  • carboxyvinyl polymer sodium polyacrylate
  • polyacrylamide polyethylene oxide
  • ethylene oxide-propylene oxide block copolymer acrylic acid/alkyl acrylate copolymer
  • acrylic acid/alkyl acrylate copolymer polydimethylmethylene piperidinium chloride
  • polyethylene glycol and highly polymerized polyethylene glycol.
  • Other examples include half esters of itaconic acid and POE alkyl ether, and cop
  • the content of the water-soluble polymer in the entire first agent (100% by mass) is not limited, but the lower limit can be 0.01% by mass or more, and can be 0.05% by mass or more, and can be 0.1% by mass or more.
  • the upper limit can be 3% by mass or less, and is preferably 2% by mass or less, and is preferably 1% by mass or less.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 3% by mass, and can be 0.05 to 2% by mass, and can be 0.1 to 1% by mass.
  • preservatives examples include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more. Among these, phenoxyethanol is preferably used in the present hair dye.
  • a preservative When a preservative is contained, its content is not limited, but can be 0.01% by mass or more, or 0.1% by mass or more, based on 100% by mass of the entire first agent, and is usually 3% by mass or less.
  • antioxidants examples include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.
  • Stabilizers examples include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, etc. These may be used alone or in combination of two or more.
  • Plant Extracts include avocado extract, hydrangea extract, aloe extract, apricot extract, apricot kernel extract, ginkgo extract, fennel extract, turmeric extract, scutellaria root extract, phellodendron bark extract, hypericum extract, orange extract, zelkova extract, chamomile extract, chamomile extract, licorice extract, gardenia extract, kumazasa extract, grapefruit extract, mulberry extract, cowberry extract, burdock extract, bamboo extract, hawthorn extract, Japanese pepper extract, mallow extract, rehmannia extract, perilla extract, linden extract, peony extract, ginger extract, and shiitake mushroom extract.
  • extracts examples include birch extract, horsetail extract, sage extract, hawthorn extract, thyme extract, tea extract, clove extract, dokudami extract, hibiscus extract, hamamelis extract, parsley extract, loquat extract, loofah extract, safflower extract, peppermint extract, linden extract, hop extract, pine extract, horse chestnut extract, soapberry extract, eucalyptus extract, yuzu extract, coix seed extract, mugwort extract, lychee extract, lavender extract, apple extract, lemon extract, astragalus extract, rose extract, rosemary extract, Roman chamomile extract, etc. These may be used alone or in combination of two or more.
  • compositions may further contain at least one component selected from flavorings, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), inorganic salts (sodium chloride, sodium carbonate, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, colorants, ultraviolet absorbers, and those listed in the "Standards for Quasi-Drug Raw Materials” (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types.
  • the dosage form of the first agent is not limited, but may be, for example, a cream, emulsion, dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc.
  • the properties are not limited, and the specific viscosity is also not limited, but may be, for example, 1 to 300,000 mPa ⁇ s.
  • the first agent is adjusted to a viscous liquid, it may be, for example, 2,000 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity may be 2,000 mPa ⁇ s or more, 4,000 mPa ⁇ s or more, or 10,000 mPa ⁇ s or more.
  • the upper limit of the viscosity can be 250,000 mPa ⁇ s or less, 225,000 mPa ⁇ s or less, or 200,000 mPa ⁇ s or less.
  • the upper and lower limits described above can be combined with each other. That is, for example, it can be 2,000 to 250,000 mPa ⁇ s, 4,000 to 225,000 mPa ⁇ s, or 10,000 to 200,000 mPa ⁇ s.
  • the above-mentioned viscosity is measured at 25°C using a B-type viscometer.
  • the packaging material for containing the first agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a liquid container, or the like.
  • the second agent contains an oil component (B 2 ) and is in a water-in-oil (W/O) emulsion state.
  • Oily component (B 2 ) contains an oil component (B 2 ).
  • the inclusion of the oil component (B 2 ) can improve the formulation stability, improve the feel to the touch, and improve the application feel.
  • examples of the oil component (B 2 ) include higher alcohols (B 2 -1), silicones (B 2 -2), hydrocarbons, fats and oils, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more. Among these, higher alcohols (B 2 -1) and silicones (B 2 -2) are preferred as the oil component (B 2 ) in the second agent.
  • the use of these oil components makes it easier to prepare a cream with an appropriate viscosity when mixed. They are also preferred in terms of the feel that can be obtained.
  • the higher alcohol (B 2 -1) may be an alcohol having a carbon chain with 6 or more carbon atoms.
  • it may be a higher alcohol having 8 to 40 carbon atoms.
  • the skeleton may be saturated or unsaturated, and may be a straight chain or a branched chain.
  • lauryl alcohol myristyl alcohol, stearyl alcohol, cetyl alcohol, cetostearyl alcohol, eicosanol, arachyl alcohol, behenyl alcohol, docosanol, octacosanol, triacontanol, tetratriacontanol, isostearyl alcohol, 2-hexyldecanol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, cholesterol, etc. These may be used alone or in combination of two or more.
  • oil component (B 2 ) higher alcohols having a branched structure such as isostearyl alcohol, 2-hexyldecanol, 2-octyldodecanol, and decyltetradecanol are preferred in terms of feel, and higher alcohols having 10 or more carbon atoms and a branched hydrocarbon chain are more preferred, and higher alcohols having 15 or more carbon atoms and a branched hydrocarbon chain are more preferred, and higher alcohols having 15 or more carbon atoms and a saturated and branched hydrocarbon chain are more preferred. More specifically, 2-octyldodecanol (B 2 -1-1) and isostearyl alcohol (B 2 -1-2) are more preferred.
  • the ratio of their contents [(B 2 -1-1)/(B 2 -1-2)] is not limited, but the lower limit can be 0.1 or more, further 0.2 or more, further 0.22 or more, further 0.25 or more, further 0.28 or more, further 0.30 or more, and further 0.32 or more.
  • the upper limit can be 10 or less, further 5 or less, further 4.5 or less, further 4.0 or less, further 3.5 or less, further 3.0 or less, and further 2.5 or less.
  • the ratio (B 2 -1-1)/(B 2 -1-2) is within the above range, the balance between the moist feel after application to hair and the bouncy texture can be well adjusted.
  • the upper and lower limits described above can be combined in various ways. That is, for example, it can be 0.1 to 10, further 0.2 to 5, further 0.22 to 4.5, further 0.25 to 4.0, further 0.28 to 3.5, further 0.30 to 3.0, and further 0.32 to 2.5.
  • examples of fats and oils include vegetable oils (vegetable fats and oils), animal oils (animal fats and oils), and the like.
  • vegetable oils include camellia oil, rice bran oil, rice germ oil, macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil.
  • animal oils include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or in combination
  • examples of silicones (B 2 -2) include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, amino-modified silicones (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (aminoethylaminopropyldimethicone) and the like), polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones.
  • dimethylpolysiloxane dime
  • methylphenylpolysiloxane is preferred in the second agent, from the viewpoints that the formulation stability of the second agent is ensured while the blending amount is highly flexible from low to high blending amounts, and that when blended in high amounts, the blending amount can be given to the hair after treatment with good finger combability and good shine.
  • hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more.
  • waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more types.
  • higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more.
  • the esters are diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, and myristic acid.
  • Examples include myristyl lacrysate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acids (C10-30) (cholesteryl/lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, and lanolin derivatives. These may be used alone or in combination of two or more.
  • the content ratio of the oil component (B 2 ) in the entire second agent (100% by mass) is not limited, but the lower limit can be 10% by mass or more, further 18% by mass or more, further 20% by mass or more, and further 22% by mass or more.
  • the upper limit can be 50% by mass or less, further preferably 30% by mass or less, further preferably 28% by mass or less, and further preferably 27% by mass or less.
  • the above upper and lower limits can be combined. That is, for example, it can be 10 to 50% by mass, further 18 to 30% by mass, further 20 to 28% by mass, and further 22 to 27% by mass.
  • the second agent can contain other components in addition to the oil component ( B2 ) described above.
  • other components include oxidizing agents, polymeric compounds, surfactants, stabilizers, preservatives, antioxidants, dispersants, protein derivatives and amino acids, chelating agents, plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, etc. These may be used alone or in combination of two or more.
  • the second agent may contain an oxidizing agent.
  • the oxidizing agent is a component that exerts an oxidizing effect, and the oxidizing effect is usually exerted by mixing with the first agent. It is preferable that the oxidizing agent is contained in the second agent but not in the first agent.
  • the oxidizing agent may be any type as long as it can exert an oxidizing effect, and examples thereof include peroxide-based oxidizing agents.
  • Peroxide-based oxidizing agents are compounds having a structure represented by "-O-O-". This structure is included in inorganic compounds as a peroxide ion (O 2 2- ), and in organic compounds as a peroxide structure (-O-O-) or a percarboxylic acid structure (-CO-O-O-). These may be used alone or in combination of two or more types.
  • inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusions or adducts of hydrogen peroxide, such as urea peroxide, melamine peroxide, hydrogen peroxide adducts of phosphates, and hydrogen peroxide adducts of pyrophosphates); peroxide salts (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts, and zinc salts); percarbonates (alkali metal salts such as potassium salts and sodium salts); perborates (alkali metal salts such as potassium salts and sodium salts); permanganates (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts), etc.
  • peroxides such as hydrogen peroxide (
  • examples of organic compounds among the peroxide-based oxidizing agents include percarboxylic acids such as performic acid, peracetic acid, and perbenzoic acid, and salts thereof.
  • examples of salts of percarboxylic acids include alkali metal salts such as potassium salts and sodium salts. These may be used alone or in combination of two or more.
  • non-peroxide oxidizing agents i.e., compounds not containing a structure represented by "-O-O-"
  • bromates alkali metal salts such as potassium salts and sodium salts
  • the content of the oxidizing agent in the entire second agent (100% by mass) is not limited, but the lower limit can be 1% by mass or more, further 3% by mass or more, further 5% by mass or more, and further 8% by mass or more.
  • the upper limit can be 40% by mass or less, further preferably 30% by mass or less, further preferably 25% by mass or less, and further preferably 20% by mass or less.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 1 to 40% by mass, further 3 to 30% by mass, and further 5 to 25% by mass.
  • the polymer compound is a compound with a high molecular weight.
  • the inclusion of the polymer compound can improve the formulation stability of the agent (second agent) containing an oxidizing agent in a W/O type emulsified state.
  • the structure of the polymer compound is not limited, but is usually an organic compound having a carbon skeleton (i.e., the polymer compound (A) usually does not contain silicone (C)).
  • the molecular weight is not limited, but is usually 10,000 or more.
  • the polymer compounds can be broadly divided into oil-soluble polymer compounds and water-soluble polymer compounds, and it is preferable that the second agent contains at least one of these. In other words, it is preferable that the polymer compounds contain an oil-soluble polymer compound and/or a water-soluble polymer compound.
  • the oil-soluble polymer compound is a polymer compound that dissolves in the oil phase of the second agent, which is a W/O type emulsion (i.e., dissolves in the main component of the oil phase).
  • oil-soluble polymer compounds include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), higher fatty acid esters, vinyl polymers (oil-soluble vinyl polymers), acrylic polymers (oil-soluble acrylic polymers), etc. These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).
  • examples of the cellulose derivative include cellulose ether (oil-soluble cellulose ether), cellulose ester, etc. These may be used alone or in combination of two or more. As described above, these are preferably nonionic. That is, for example, nonionic cellulose ether is preferable.
  • examples of the cellulose ether include methyl cellulose, ethyl cellulose, ethyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • examples of starch derivatives include starch fatty acid esters, dextrin fatty acid esters, etc. More specifically, examples include dextrin palmitate, dextrin ethylhexanoate, etc.
  • examples of the higher fatty acid ester include glyceryl behenate/eicosandioate, glyceryl behenate, glyceryl eicosandioate, etc. These may be used alone or in combination of two or more.
  • the water-soluble polymer compound is a polymer compound that dissolves in the aqueous phase of the second agent, which is a W/O emulsion (i.e., dissolves in water).
  • water-soluble polymer compounds include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), etc. These may be used alone or in combination of two or more types.
  • examples of the cellulose derivatives include cellulose ether (water-soluble cellulose ether), cellulose ester, etc. These may be used alone or in combination of two or more kinds.
  • examples of the cellulose ether include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • the cellulose ether may be any of cationic cellulose ether, anionic cellulose ether, amphoteric cellulose ether, and nonionic cellulose ether, and these may be used alone or in combination of two or more kinds, but in the second agent, cationic cellulose ether (cationic water-soluble cellulose ether) is particularly preferred from the viewpoint of improving the feel to the touch.
  • cationic cellulose ether include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10), etc.
  • water-soluble polymers that contain polysaccharides other than cellulose in their structure and have cationic properties include dextran hydroxypropyltrimonium chloride.
  • acrylic polymers include polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution). These may be used alone or in combination of two or more.
  • the content of the polymer compound in the entire second agent (100% by mass) is not limited, but the lower limit can be 0.01% by mass or more, further 0.1% by mass or more, further 0.5% by mass or more, and further 1.0% by mass or more.
  • the upper limit can be 20% by mass or less, further preferably 10% by mass or less, further preferably 5% by mass or less, and further preferably 3.0% by mass or less.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 20% by mass, further 0.1 to 10% by mass, further 0.5 to 5% by mass, and further 1.0 to 3.0% by mass.
  • the ratio (P O )/(P W ) of the content ratio of each polymer compound in 100% by mass of the entire second agent is not limited, but the lower limit can be 0.1 or more, further 0.5 or more, further 1.0 or more, and further 1.5 or more.
  • the upper limit can be 10 or less, further preferably 5 or less, further preferably 4 or less, and further preferably 3 or less.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 10, further 0.5 to 5, further 1.0 to 4, and further 1.5 to 3.
  • surfactant examples include cationic surfactants, anionic surfactants, nonionic surfactants, and amphoteric surfactants. Examples of these surfactants include the same surfactants as those in the first agent described above. These surfactants may be used alone or in combination of two or more.
  • the second agent may contain a surfactant, but may be substantially free of a surfactant. That is, for example, the upper limit of the content of the surfactant in the entire second agent (100% by mass) may be 1% by mass or less, further 0.5% by mass or less, and further 0.1% by mass or less.
  • Stabilizer A stabilizer can be added to the second agent.
  • the addition of a stabilizer can improve the stability of the oxidizing agent.
  • stabilizers include phenoxyethanol (ethylene glycol phenyl ether), salicylic acid, salicylic acid salts, hydroxyethanediphosphonic acid, hydroxyethanediphosphonic acid salts, stannic acid, and stannic acid salts.
  • examples of cations constituting the salt include alkali metal ions and ammonium ions. These may be used alone or in combination of two or more.
  • preservatives examples include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more. Among these, phenoxyethanol is preferably used in the present hair dye.
  • a preservative When a preservative is contained, its content is not limited, but can be 0.01% by mass or more, or 0.1% by mass or more, based on 100% by mass of the entire first agent, and is usually 3% by mass or less.
  • antioxidant the same antioxidants as those in the above-mentioned first agent can be mentioned. These antioxidants may be used alone or in combination of two or more.
  • Plant extracts examples include the same antioxidants as those in the above-mentioned first agent. These may be used alone or in combination of two or more kinds.
  • the content ratio is not limited, but the lower limit can be 30 mass% or more, further 35 mass% or more, and further 40 mass% or more.
  • the upper limit can be 85 mass% or less, further 80 mass% or less, and further 75 mass% or less.
  • the above upper and lower limits can be combined. That is, for example, it can be 30 to 85 mass%, further 35 to 80 mass%, and further 40 to 75 mass%.
  • fragrances may further contain at least one component selected from fragrances, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), inorganic salts (sodium chloride, sodium carbonate, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, colorants, and ultraviolet absorbers, as well as those listed in the "Standards for Quasi-Drug Raw Materials” (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types. Furthermore, further components may also be blended in the second agent described above. In this case, the same types as above can be selected.
  • the dosage form of the second agent is not limited, but can be, for example, a cream, emulsion, dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc.
  • the properties are not limited, and the specific viscosity is also not limited, but can be, for example, 1 to 300,000 mPa ⁇ s.
  • the second agent is adjusted to a viscous liquid, it can be, for example, 2,000 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity can be 2,000 mPa ⁇ s or more, 4,000 mPa ⁇ s or more, or 10,000 mPa ⁇ s or more.
  • the upper limit of the viscosity can be 250,000 mPa ⁇ s or less, 225,000 mPa ⁇ s or less, or 200,000 mPa ⁇ s or less.
  • the upper and lower limits described above can be combined with each other. That is, for example, it can be 2,000 to 250,000 mPa ⁇ s, 4,000 to 225,000 mPa ⁇ s, or 10,000 to 200,000 mPa ⁇ s.
  • the above-mentioned viscosity is measured at 25°C using a B-type viscometer.
  • the packaging material for containing the second agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a liquid storage container, or the like.
  • the hair cosmetic agent is an agent used by mixing the first agent and the second agent.
  • the first agent and the second agent may be mixed before application to the hair, or may be applied separately in sequence.
  • An example of the embodiment in which they are mixed before application to the hair is an embodiment in which the first agent and the second agent are mixed on a tray and the resulting mixture is used as the hair cosmetic agent.
  • an example of the embodiment in which they are not mixed before application to the hair is an embodiment in which the first agent is applied to the hair, and then the second agent is applied to the same hair, so that they are mixed on the hair.
  • the hair cosmetic agent when applying the hair cosmetic agent, it can be applied to the hair using a tool such as a comb, brush, or spatula. Furthermore, it can be applied to the hair using the user's hands. Furthermore, it can be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more.
  • the hair cosmetic agent may be applied to hair wet with water or warm water, or to dry hair.
  • hair includes, for example, hair on the head, beard, eyebrows, body hair, and the like.
  • the applicable biological hair is not limited, but it is suitable for use with human hair.
  • when applied to human hair it may be applied to hair of any condition or color.
  • application to dyed hair includes repairing, changing, adding, and the like of the color of dyed hair.
  • the hair cosmetic composition according to the first embodiment of the present invention is a multi-component type hair cosmetic composition comprising a plurality of separate hair cosmetic compositions, At least one of the hair cosmetic compositions is characterized in that it is in a water-in-oil type emulsified state and contains (A) a nonionic surfactant.
  • Multiple-component hair cosmetics are composed of multiple separate hair cosmetic compositions. Multiple-component hair cosmetics usually achieve their intended function by mixing multiple hair cosmetic compositions. For this reason, multiple-component hair cosmetics are usually packaged individually so that each hair cosmetic composition is not mixed before use. Before use, the necessary hair cosmetic compositions are mixed together and the resulting mixture is applied to the hair, or the necessary hair cosmetic compositions are applied to the hair in sequence, forming a mixture of the hair cosmetic compositions on the hair, for use.
  • the composition for hair cosmetics which is in a water-in-oil type emulsified state and contains a nonionic surfactant (A) is hereinafter also referred to simply as a "W/O type NIS-containing composition.”
  • a hair cosmetic composition that is in an oil-in-water emulsified state will hereinafter also be referred to simply as an "O/W type composition.”
  • a hair cosmetic composition containing an ester oil will hereinafter be simply referred to as an "ester oil-containing composition.”
  • the W/O type NIS-containing composition and the ester oil-containing composition may be different hair cosmetic compositions, or the two of the above may be the same hair cosmetic composition. In other words, the two are the same means, for example, a hair cosmetic composition that is a W/O type NIS-containing composition and an ester oil-containing composition.
  • Emulsion state A water-in-oil type (hereinafter also simply referred to as "W/O type") emulsion is an emulsion state in which an oil-based component forms a continuous phase and an aqueous component is dispersed within the continuous phase. That is, it can be said that the emulsion state is one in which the outer phase is formed by the oil-based component and the inner phase is formed by the aqueous component.
  • the W/O type emulsion state may be determined in any manner, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent is not dispersed in the water and is maintained, it can be determined that the agent is in a W/O type emulsion state.
  • an oil-in-water type emulsion (hereinafter simply referred to as "O/W type”) is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed within this continuous phase.
  • O/W type emulsion state may be determined in any manner, but for example, if an agent is dropped into water and then stirred (lightly stirred), and the agent is dispersed in the water, it can be determined that the agent is in an O/W type emulsion state.
  • Nonionic surfactant is a nonionic surfactant.
  • a hair cosmetic composition in a W/O type emulsified state contains a nonionic surfactant, the rinsing performance can be improved compared to when the composition does not contain a nonionic surfactant.
  • the gloss of the appearance of the W/O type NIS-containing composition itself can be improved.
  • nonionic surfactant used is not limited, but examples of nonionic surfactants include ester-type nonionic surfactants, ether-type nonionic surfactants (including POE alkyl ethers as described below), alkyl glucosides, and the like. These may be used alone or in combination of two or more. Of these, from the viewpoint of further improving the rinsing performance, nonionic surfactants other than POE alkyl ethers are preferred, and ester-type nonionic surfactants are even more preferred, with ester-type nonionic surfactants having a fatty acid skeleton (i.e., having a fatty acid residue) being even more preferred.
  • ester-type nonionic surfactants having a fatty acid skeleton (i.e., having a fatty acid residue) being even more preferred.
  • ester-type nonionic surfactants include ester-type nonionic surfactants having various fatty acid skeletons.
  • POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate
  • glyceryl mono fatty acid esters such as POE glycerin monostearate and POE glycerin monomyristate
  • POE sorbitol fatty acid esters such as POE sorbitol tetraoleate, POE sorbitol hexastearate, and POE sorbitol monolaurate.
  • ester-type nonionic surfactants having fatty acid residues include POE sorbitan fatty acid esters and monoglyceryl mono fatty acid esters, for example, 5 or more moles of POE added.
  • the POE sorbitol fatty acid esters have a POE molar number of POE added, for example, 6 or more moles. These may be used alone or in combination of two or more kinds.
  • ester-type nonionic surfactants include sorbit beeswax such as POE (6) POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid esters, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, and POE reduced lanolin. These may be used alone or in combination of two or more.
  • POE sorbitan fatty acid esters are preferred from the viewpoint of being less likely to cause emulsion destruction and improving rinsing performance, and POE sorbitan monooleate is further preferred from the viewpoint of being less likely to cause emulsion destruction and improving rinsing performance.
  • Ether-type nonionic surfactants include POE cetyl ethers (ceteth) such as POE (5.5) cetyl ether, POE (6) cetyl ether, POE (6) cetyl ether, POE (7) cetyl ether, POE (10) cetyl ether, POE (15) cetyl ether, POE (20) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (2) cetyl ether, POE (4) cetyl ether, and POE (5) cetyl ether; POE (20) stearyl ether, POE (150) stearyl ether, and POE ( 4) POE stearyl ethers (steareth) such as stearyl ether, POE (5) stearyl ether, and POE (2) stearyl ether; POE behenyl ethers (behen
  • POE oleyl ethers such as POE (2) oleyl ether and POE (3) oleyl ether
  • POE lauryl ethers (laureths) such as POE (4.2) lauryl ether, POE (9) lauryl ether, POE (10) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, POE (2) lauryl ether and POE (3) lauryl ether
  • POE myristyl ethers such as POE (2) myristyl ether and POE (3) myristyl ether
  • POE octyldodecyl ethers such as POE (2) octyldodecyl ether and POE (5) octyldodecyl ether
  • POE hexyldecyl ethers such as POE (2) hexyldecyl ether and POE (4) hexyldecyl
  • the content ratio of the nonionic surfactant contained in the NIS-containing composition is not limited, but when the entire NIS-containing composition is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.3% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 10% by mass, further 0.1 to 5% by mass, and further 0.3 to 3% by mass.
  • the NIS-containing composition may be used at its original concentration, but may also be used in a mixture with other hair cosmetic compositions constituting a multi-component hair cosmetic. That is, the NIS-containing composition may be used as a mixture with other hair cosmetic compositions.
  • An example of a mixture is a multi-component oxidative hair dye.
  • a multi-component oxidative hair dye is composed of a plurality of hair cosmetic compositions including a first agent containing an alkali agent and a second agent containing an oxidizing agent, and a mixture obtained by mixing the first agent and the second agent may be used.
  • the content ratio of the nonionic surfactant in the mixture is not limited.
  • the content ratio of the nonionic surfactant when used is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.025 mass%, further 0.05 mass%, and further 0.15 mass%.
  • the upper limit can be 5 mass%, further 2.5 mass%, and further 1.5 mass%.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.025 to 5 mass%, further 0.05 to 2.5 mass%, and further 0.15 to 1.5 mass%.
  • surfactants include cationic surfactants, anionic surfactants, and amphoteric surfactants in addition to the nonionic surfactants described above.
  • the NIS-containing composition may contain surfactants other than the nonionic surfactants, but it is generally preferable that they are not substantially contained.
  • Ester oil is a type of oily component, which will be described later.
  • a multiple-component hair cosmetic comprising a W/O type NIS-containing composition can have an ester oil-containing composition as a hair cosmetic composition.
  • the ester oil is preferably contained in the W/O type NIS-containing composition rather than being contained in a composition other than the W/O type NIS-containing composition.
  • the W/O type NIS-containing composition and the ester oil-containing composition are the same composition (a hair cosmetic composition in a W/O type emulsified state and containing a nonionic surfactant and an ester oil).
  • Ester oils include glyceryl triethylhexanoate, cetyl 2-ethylhexanoate (cetyl ethylhexanoate), diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, myristyl myristate, isotridecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, isoprop
  • oleic acid examples include 2-ethylhexyl tincture, butyl stearate, stearyl stearate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, octyldodecyl ricinoleate, fatty acid (C10-30) (cholesteryl/lanosteryl), di-2-ethylhexanoate ethylene glycol, pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, hydrogenated castor oil isostearate, lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, glyceryl tricaprylate, diisostearyl malate
  • glyceryl tri-2-ethylhexanoate and cetyl 2-ethylhexanoate are particularly preferred.
  • the content ratio of the ester oil contained in the ester oil-containing composition is not limited, but when the entire ester oil-containing composition is taken as 100% by mass, from the viewpoint of ease of rinsing, the lower limit can be 0.01% by mass, further 0.2% by mass, and further 0.5% by mass.
  • the upper limit can be 15% by mass, further 7% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.2 to 7% by mass, and further 0.5 to 3% by mass.
  • the ester oil-containing composition may be used at its original concentration, but may also be mixed with other hair cosmetic compositions constituting a multi-component hair cosmetic. That is, the ester oil-containing composition may be used as a mixture with other hair cosmetic compositions.
  • the content ratio of the ester oil in the mixture is not limited. That is, the content ratio of the ester oil at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.005 mass%, further 0.1 mass%, and further 0.25 mass%.
  • the upper limit can be 7.5 mass%, further 3.5 mass%, and further 1.5 mass%.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.005 to 7.5 mass%, further 0.1 to 3.5 mass%, and further 0.25 to 1.5 mass%.
  • Each hair cosmetic composition constituting the hair cosmetic of the first embodiment can contain other components in addition to the above-mentioned nonionic surfactant and ester oil.
  • other components include oily components other than ester oil, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, etc. These may be used alone or in combination of two or more.
  • Oily components other than ester oils are preferably included in the hair cosmetic composition in order to make the hair cosmetic composition into a W/O type emulsified state.
  • the incorporation of an oily component can improve the formulation stability (stability of the W/O type emulsified state), feel (feel of the hair after application of the hair cosmetic), and application feel.
  • oil components other than ester oil include higher alcohols, silicones, hydrocarbons, fats and oils, waxes, higher fatty acids, etc. These may be used alone or in combination of two or more. Among these, higher alcohols and silicones are preferred.
  • the hair cosmetic composition constituting the hair cosmetic of the first aspect contains a higher alcohol and/or a silicone
  • the formulation stability and feel can be improved compared to when these are not contained.
  • the higher alcohol and/or silicone is contained in the W/O type NIS-containing composition rather than being contained in a composition other than the W/O type NIS-containing composition. That is, it is preferable that the W/O type NIS-containing composition contains higher alcohol and/or silicone.
  • the W/O type NIS-containing composition and the ester oil-containing composition are the same composition (a hair cosmetic composition that is in a W/O type emulsion state and contains a nonionic surfactant and an ester oil), so it is particularly preferable that the hair cosmetic composition constituting the first embodiment of the hair cosmetic (multiple-component hair cosmetic) has a hair cosmetic composition that is in a W/O type emulsion state, contains a nonionic surfactant and an ester oil, and contains higher alcohol and/or silicone.
  • the content ratio of the oily component other than ester oil is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 5% by mass, further 10% by mass, and further 15% by mass.
  • the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass. The above upper and lower limits can be combined. That is, for example, it can be 5 to 50% by mass, further 10 to 40% by mass, and further 15 to 30% by mass.
  • alcohols having a carbon chain with 6 or more carbon atoms can be used as higher alcohols.
  • higher alcohols having 8 to 40 carbon atoms are included.
  • the skeleton may be saturated or unsaturated, and may be linear or branched.
  • cetearyl alcohol lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol. These may be used alone or in combination of two or more.
  • liquid at room temperature especially 25°C
  • isostearyl alcohol and/or 2-octyldodecanol are preferred, with isostearyl alcohol and 2-octyldodecanol being even more preferred.
  • the content of the higher alcohol is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 3% by mass, further 8% by mass, and further 12% by mass.
  • the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 3 to 50% by mass, further 8 to 40% by mass, and further 12 to 30% by mass.
  • the hair cosmetic composition containing higher alcohol may be used at its original concentration, but may also be mixed with other hair cosmetic compositions constituting a multi-agent type hair cosmetic. That is, the higher alcohol-containing composition can be used as a mixture with other hair cosmetic compositions.
  • the content ratio of higher alcohol in the mixture is not limited. That is, the content ratio of higher alcohol at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 1.5 mass%, further 4 mass%, and further 6 mass%.
  • the upper limit can be 25 mass%, further 20 mass%, and further 15 mass%.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 1.5 to 25 mass%, further 4 to 20 mass%, and further 6 to 15 mass%.
  • silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, hydroxyl-terminated dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, amino-modified silicones (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (aminoethylaminopropyldimethicone) etc.), polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, fluorine-modified silicones, etc.
  • dimethylpolysiloxane dime
  • methylphenylpolysiloxane decamethylcyclopentas
  • methylphenylpolysiloxane is preferred from the viewpoint of improving the feel of the hair (fingers can be run through it) while ensuring the stability of the formulation.
  • the content of silicone is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 0.1% by mass, further 1% by mass, and further 2% by mass.
  • the upper limit can be 40% by mass, further 20% by mass, and further 10% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 40% by mass, further 1 to 20% by mass, and further 2 to 10% by mass.
  • the silicone-containing hair cosmetic composition may be used at its original concentration, but may also be mixed with other hair cosmetic compositions constituting a multi-ingredient hair cosmetic. That is, the silicone-containing composition can be used as a mixture with other hair cosmetic compositions.
  • the silicone content in the mixture is not limited. That is, the silicone content during use is not limited, and when the entire mixture is taken as 100% by mass, the lower limit can be 0.05% by mass, further 0.5% by mass, and further 1% by mass.
  • the upper limit can be 20% by mass, further 10% by mass, and further 5% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.05 to 20% by mass, further 0.5 to 10% by mass, and further 1 to 5% by mass.
  • hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more. Of these, those that are liquid at room temperature (especially 25°C) are preferred.
  • examples of fats and oils include vegetable oils (vegetable fats and oils) and animal oils (animal fats and oils).
  • vegetable oils include camellia oil, rice bran oil, rice germ oil, macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil.
  • animal oils include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or
  • waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, and shellac wax. These may be used alone or in combination of two or more. Of these, those that are liquid at room temperature (especially 25°C) are preferred.
  • higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (especially 25°C) are preferred.
  • the polymer compound is a compound with a high molecular weight.
  • the polymer compound is preferably contained in the W/O type NIS-containing composition rather than being contained in a composition other than the W/O type NIS-containing composition. Furthermore, as described above, since the W/O type NIS-containing composition and the ester oil-containing composition are preferably the same composition, the polymer compound is also preferably contained in these compositions.
  • the composition is preferably a hair cosmetic composition that is in a W/O type emulsified state and contains a nonionic surfactant and a polymer compound, or a hair cosmetic composition that is in a W/O type emulsified state and contains a nonionic surfactant, an ester oil, and a polymer compound.
  • the polymer compound can more effectively exert formulation stability.
  • the structure of the polymeric compound is not limited, but is usually an organic compound having a carbon skeleton (i.e., the polymeric compound does not usually contain silicone).
  • the molecular weight is also not limited, but is usually 10,000 or more.
  • Polymer compounds can be broadly divided into oil-soluble polymer compounds that exhibit oil solubility and water-soluble polymer compounds that exhibit water solubility, and it is preferable that the hair cosmetic composition contains at least one of these. In other words, it is preferable that the polymer compound contains an oil-soluble polymer compound and/or a water-soluble polymer compound.
  • oil-soluble polymer compounds are polymer compounds that dissolve in the oil phase of the W/O type NIS-containing composition (i.e., dissolve in the main component of the oil phase).
  • oil-soluble polymer compounds include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), fatty acid polyesters (oil-soluble fatty acid polyesters), vinyl polymers (oil-soluble vinyl polymers), acrylic polymers (oil-soluble acrylic polymers), etc. These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).
  • the cellulose derivatives include cellulose ether (oil-soluble cellulose ether), cellulose ester (oil-soluble cellulose ester), etc. These may be used alone or in combination of two or more. Also, as mentioned above, these are preferably nonionic. That is, for example, nonionic cellulose ether is preferable.
  • examples of the cellulose ether include methyl cellulose, ethyl cellulose, ethyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • examples of starch derivatives include starch fatty acid esters, dextrin fatty acid esters, etc.
  • examples include dextrin palmitate, dextrin ethylhexanoate, etc. These may be used alone or in combination of two or more.
  • examples of the fatty acid polyester include glyceryl behenate/eicosandioate, glyceryl behenate, glyceryl eicosandioate, etc. These may be used alone or in combination of two or more.
  • ethyl cellulose is preferred from the viewpoint of good solubility in the oil phase.
  • the water-soluble polymer compounds are those that dissolve in the aqueous phase of the W/O type NIS-containing composition (i.e., dissolve in water).
  • water-soluble polymer compounds include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), glucose derivatives (cyclodextrin, starch), etc. These may be used alone or in combination of two or more.
  • these water-soluble polymers are preferably ionic, and in particular, cationic water-soluble polymers.
  • examples of the cellulose derivatives include cellulose ether (water-soluble cellulose ether), cellulose ester (water-soluble cellulose ester), etc. These may be used alone or in combination of two or more kinds.
  • examples of the cellulose ether include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds.
  • the cellulose ether is preferably an ionic cellulose ether.
  • the ionic cellulose ether may be any of cationic cellulose ether, anionic cellulose ether, amphoteric cellulose ether, and nonionic cellulose ether, and these may be used alone or in combination of two or more.
  • cationic cellulose ether cationic water-soluble cellulose ether
  • examples of cationic cellulose ether include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10), hydroxyethyl cellulose dimethyl diallyl ammonium chloride, and the like. Among these, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred.
  • water-soluble polymers that contain polysaccharides other than cellulose in their structure and have cationic properties include dextran hydroxypropyltrimonium chloride.
  • acrylic polymers include polyquaternium-11 (vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution). These may be used alone or in combination of two or more.
  • the content of the polymeric compound is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.5% by mass.
  • the upper limit can be 5% by mass, further 3% by mass, and further 2% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5% by mass, further 0.1 to 3% by mass, and further 0.5 to 2% by mass.
  • a hair cosmetic composition contains a polymer compound and further contains both an oil-soluble polymer compound and a water-soluble polymer compound
  • the ratio of the content of each polymer compound in 100% by mass of the entire hair cosmetic composition is not limited, but the lower limit can be 0.01, further 0.1, and further 0.2.
  • the upper limit can be 5, further 3, and further 1.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 5, further 0.1 to 3, and further 0.2 to 1.
  • the oxidizing agent is a component that exerts an oxidizing effect.
  • the oxidizing agent is preferably contained in the W/O type NIS-containing composition rather than being contained in a composition other than the W/O type NIS-containing composition. Furthermore, as described above, since the W/O type NIS-containing composition and the ester oil-containing composition are preferably the same composition, the oxidizing agent is also preferably contained in these compositions.
  • the composition is preferably a hair cosmetic composition that is in a W/O type emulsified state and contains a nonionic surfactant and an oxidizing agent, or a hair cosmetic composition that is in a W/O type emulsified state and contains a nonionic surfactant, an ester oil, and an oxidizing agent.
  • the oxidizing action of the oxidizing agent is usually exerted by mixing with another hair cosmetic composition (other agent) different from the hair cosmetic composition containing the oxidizing agent.
  • the hair cosmetic of the first embodiment can be a two-agent type hair cosmetic consisting of a first agent (first hair cosmetic composition) and a second agent (second hair cosmetic composition).
  • the first agent can preferably contain an alkaline agent
  • the second agent can preferably contain an oxidizing agent.
  • the oxidizing agent is contained in the second agent, but not in the first agent. Then, the oxidizing action of the oxidizing agent is exerted by mixing the first agent and the second agent.
  • the oxidizing agent may be any type that can exert an oxidizing effect, and examples thereof include peroxide-based oxidizing agents.
  • Peroxide-based oxidizing agents are compounds having a structure represented by "-O-O-". This structure is included in inorganic compounds as a peroxide ion (O 2 2- ), and in organic compounds as a peroxide structure (-O-O-) or a percarboxylic acid structure (-CO-O-O-). These may be used alone or in combination of two or more. Among the above, inorganic compounds are preferred, and hydrogen peroxide is more preferred among the inorganic compounds described below.
  • inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusions or adducts of hydrogen peroxide, such as urea peroxide, melamine peroxide, hydrogen peroxide adducts of phosphates, and hydrogen peroxide adducts of pyrophosphates); peroxide salts (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts, and zinc salts); percarbonates (alkali metal salts such as potassium salts and sodium salts); perborates (alkali metal salts such as potassium salts and sodium salts); permanganates (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts), etc.
  • peroxides such as hydrogen peroxide (
  • examples of organic compounds among the peroxide-based oxidizing agents include percarboxylic acids such as performic acid, peracetic acid, and perbenzoic acid, and salts thereof.
  • examples of salts of percarboxylic acids include alkali metal salts such as potassium salts and sodium salts. These may be used alone or in combination of two or more.
  • non-peroxide oxidizing agents i.e., compounds not containing a structure represented by "-O-O-"
  • bromates alkali metal salts such as potassium salts and sodium salts
  • the content of the oxidizing agent is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 0.1% by mass, further 2% by mass, and further 3% by mass.
  • the upper limit can be 30% by mass, further 20% by mass, and further 15% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 30% by mass, further 2 to 20% by mass, and further 3 to 15% by mass.
  • the hair cosmetic composition containing an oxidizing agent may be used at its original concentration, but may also be mixed with other hair cosmetic compositions constituting a multi-component type hair cosmetic. That is, the oxidizing agent-containing composition can be used as a mixture with other hair cosmetic compositions.
  • the content ratio of the oxidizing agent in the mixture is not limited. That is, the content ratio of the oxidizing agent at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.05 mass%, further 1 mass%, and further 2 mass%.
  • the upper limit can be 15 mass%, further 10 mass%, and further 7.5 mass%.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.05 to 15 mass%, further 1 to 10 mass%, and further 2 to 7.5 mass%.
  • the stabilizer can improve the stability of the oxidizing agent.
  • the stabilizer may be contained in any of the compositions for hair cosmetics constituting the hair cosmetic of the first aspect, but in view of the above-mentioned action, it is preferable that the stabilizer is contained together with the oxidizing agent.
  • the stabilizer include phenoxyethanol (ethylene glycol phenyl ether), salicylic acid, salicylic acid salts, hydroxyethane diphosphonic acid, hydroxyethane diphosphonic acid salts, stannic acid, and stannic acid salts.
  • examples of the cations constituting the salt include alkali metal ions and ammonium ions. These may be used alone or in combination of two or more.
  • phenoxyethanol and/or salicylic acid are preferred from the viewpoint of reducing the contribution to the stability of the formulation.
  • the content ratio of the stabilizer is not limited, but when the entire hair cosmetic composition is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.2% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 10% by mass, further 0.1 to 5% by mass, and further 0.2 to 3% by mass.
  • the acid includes inorganic acids and their salts, and organic acids and their salts.
  • inorganic acids include phosphoric acid, hydrochloric acid, sulfuric acid, boric acid, etc.
  • salts thereof include alkali metal salts and ammonium salts. These may be used alone or in combination of two or more.
  • organic acids include tartaric acid, citric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, gluconic acid, levulinic acid, glycolic acid, glucuronic acid, benzoic acid, pyrrolidone carboxylic acid (PCA), etc.
  • salts include alkali metal salts and ammonium salts. These may be used alone or in combination of two or more.
  • the base includes organic bases, inorganic bases, and salts thereof.
  • organic base include organic amines, basic amino acids and their salts, guanidine and its salts, etc. These may be used alone or in combination of two or more kinds.
  • inorganic base include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc. These may be used alone or in combination of two or more.
  • preservatives examples include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more kinds.
  • antioxidants examples include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more kinds.
  • the hair cosmetic composition constituting the hair cosmetic of the first embodiment can contain other components in addition to the above-mentioned nonionic surfactant, ester oil, oily components other than ester oil, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, and antioxidants.
  • Other components include dispersants, protein derivatives and amino acids, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one component selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types.
  • the hair cosmetic composition of the first embodiment which is composed of the various components as described above, can be suitably used, specifically, as an oxidative hair dye agent, a bleach, a destaining agent, a decolorizing and destaining agent (an agent containing an oxidizing agent), a shampoo, a rinse, a treatment, a conditioner, a cleansing agent, or the like.
  • the hair cosmetic of the first embodiment and the hair cosmetic composition constituting the hair cosmetic of the first embodiment may be in any form (form at 25° C.), but may be, for example, a cream, a paste, a liquid, a gel, or a foam.
  • the properties and the specific viscosity are not limited, but may be, for example, 1 to 300,000 mPa ⁇ s. It may be adjusted to a particularly viscous liquid. That is, it may be, for example, 500 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity may be 500 mPa ⁇ s, 1,000 mPa ⁇ s, or 5,000 mPa ⁇ s.
  • the upper limit of the viscosity may be 250,000 mPa ⁇ s, 225,000 mPa ⁇ s, or 200,000 mPa ⁇ s. The upper and lower limits may be combined in any combination.
  • the packaging material for containing the hair cosmetic composition constituting the hair cosmetic of the first embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double can-type packaging material, an applicator, a pouch, etc.
  • the packaging material for containing the hair cosmetic composition containing the above-mentioned oxidizing agent is preferably a tube-shaped packaging material, and furthermore, from the viewpoint of formulation stability, a tube-shaped packaging material whose inner surface is made of aluminum is more preferable.
  • a pump-type packaging material or a bottle-type packaging material is preferable.
  • a pump-type packaging material is preferable from the viewpoint of ease of use.
  • the hair cosmetic composition of the first aspect may be applied to hair in any manner.
  • the hair cosmetic composition of the first aspect may be applied to hair using a tool such as a comb, a brush, or a spatula.
  • a tool such as a comb, a brush, or a spatula.
  • application to hair using a comb is preferred from the viewpoint of applicability.
  • the details of the comb to be used are not limited, but for example, a comb having a shape exemplified in FIG. 1 can be used.
  • the material of the comb is not limited, but a resin comb can be used, and furthermore, a polypropylene comb can be used.
  • the conventional hair cosmetic composition has a problem that the hair cosmetic composition attached to the comb becomes difficult to wash off when a resin comb is used.
  • the hair cosmetic composition of the first aspect is excellent in that it can solve the above problem because it has improved wash-off performance.
  • the hair cosmetic When applying the hair cosmetic to hair, it may be applied by the user's hands. It may also be applied by dipping, coating, penetration, or other procedures. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic may be applied to hair that is wet with water or warm water, or to dry hair.
  • the hair to which the hair cosmetic composition is applied includes, for example, hair on the head, beard, eyebrows, body hair, etc.
  • the type of biological hair to which it can be applied is not limited, but it is suitable for use on human hair.
  • it when applied to human hair, it may be applied to hair of any condition or color. That is, it may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, etc.
  • application to dyed hair includes repairing, changing, adding, etc., the color of dyed hair.
  • the hair cosmetic composition according to the second embodiment of the present invention is a hair cosmetic composition in a water-in-oil type emulsion state, The composition is characterized by containing (A) a nonionic surfactant. That is, the hair cosmetic composition of the second embodiment is a single-component hair cosmetic composition.
  • Emulsion state A water-in-oil type (hereinafter also simply referred to as "W/O type") emulsion is an emulsion state in which an oil-based component forms a continuous phase and an aqueous component is dispersed within the continuous phase. That is, it can be said that the emulsion state is one in which the outer phase is formed by the oil-based component and the inner phase is formed by the aqueous component.
  • the W/O type emulsion state may be determined in any manner, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent is not dispersed in the water and is maintained, it can be determined that the agent is in a W/O type emulsion state.
  • an oil-in-water type emulsion (hereinafter simply referred to as "O/W type”) is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed within this continuous phase.
  • O/W type emulsion state may be determined in any manner, but for example, if an agent is dropped into water and then stirred (lightly stirred), and the agent is dispersed in the water, it can be determined that the agent is in an O/W type emulsion state.
  • the nonionic surfactant is a nonionic surfactant.
  • the rinsing performance can be improved compared to when the hair cosmetic composition of the second embodiment does not contain a nonionic surfactant.
  • the gloss of the appearance of the hair cosmetic composition of the second embodiment itself can be improved.
  • nonionic surfactant used is not limited, but examples of nonionic surfactants include ester-type nonionic surfactants, ether-type nonionic surfactants (including POE alkyl ethers as described below), alkyl glucosides, and the like. These may be used alone or in combination of two or more. Of these, from the viewpoint of improving the shine of the agent itself in hair dyes, and from the viewpoint of improving foaming performance in shampoos, nonionic surfactants other than POE alkyl ethers are preferred, and ester-type nonionic surfactants are more preferred, with ester-type nonionic surfactants having a fatty acid skeleton (i.e., having fatty acid residues) being even more preferred.
  • ester-type nonionic surfactants include ester-type nonionic surfactants, ether-type nonionic surfactants (including POE alkyl ethers as described below), alkyl glucosides, and the like. These may be used alone or in
  • ester-type nonionic surfactants and ether-type nonionic surfactants can be the same as those described for the hair cosmetic of the first embodiment. Among them, from the viewpoint of being less likely to cause emulsion destruction and improving rinse-off performance, ester-type nonionic surfactants are preferred, POE sorbitan fatty acid esters are preferred, and furthermore, from the viewpoint of being less likely to cause emulsion destruction and improving rinse-off performance, POE sorbitan monooleate is preferred.
  • the content ratio of the nonionic surfactant contained in the hair cosmetic composition of the second embodiment is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.3% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 10% by mass, further 0.1 to 5% by mass, and further 0.3 to 3% by mass.
  • surfactants include cationic surfactants, anionic surfactants, and amphoteric surfactants in addition to the nonionic surfactants described above.
  • Hair cosmetics may contain surfactants other than nonionic surfactants, but it is generally preferable that they are not substantially included.
  • Ester oil is a type of oily component described later.
  • the wash-off performance can be improved compared to when the hair cosmetic composition of the second embodiment does not contain ester oil.
  • the type of ester oil the details explained in the hair cosmetic composition of the first embodiment can be applied as is. Among them, those that are liquid at room temperature (particularly 25° C.) are preferred, and in particular, glyceryl tri-2-ethylhexanoate and cetyl 2-ethylhexanoate are preferred from the viewpoint of ease of washing off.
  • the lower limit can be 0.01% by mass, further 0.2% by mass, and further 0.5% by mass.
  • the upper limit can be 15% by mass, further 7% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.2 to 7% by mass, and further 0.5 to 3% by mass.
  • the hair cosmetic composition of the second embodiment may contain other components in addition to the nonionic surfactant and ester oil described above.
  • other components include oily components other than ester oil, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, etc. These may be used alone or in combination of two or more.
  • Oily components other than ester oils are preferably included in the hair cosmetic composition of the second embodiment to make the hair cosmetic composition of the second embodiment into a W/O type emulsified state.
  • the incorporation of an oily component can improve the formulation stability (stability of the W/O type emulsified state), the feel (the feel of the hair after application of the hair cosmetic composition), and the application feel.
  • the type of oily component other than ester oil the contents explained in the hair cosmetic composition of the first embodiment can be applied as is. Among them, higher alcohols and silicones are preferred. When the hair cosmetic composition of the second embodiment contains higher alcohols and/or silicones, the formulation stability and the feel (the feel of the hair after application of the hair cosmetic composition) can be improved compared to when it does not contain these.
  • the content ratio of the oily component other than ester oil is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 5% by mass, further 10% by mass, and further 15% by mass.
  • the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass. The above upper and lower limits can be combined. That is, for example, it can be 5 to 50% by mass, further 10 to 40% by mass, and further 15 to 30% by mass.
  • the types of higher alcohols can be as described in the hair cosmetic composition of the first embodiment.
  • those that are liquid at room temperature (particularly 25°C) are preferred, and isostearyl alcohol and/or 2-octyldodecanol are preferred, with isostearyl alcohol and/or 2-octyldodecanol being even more preferred.
  • the content of the higher alcohol is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 3% by mass, further 8% by mass, and further 12% by mass.
  • the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 3 to 50% by mass, further 8 to 40% by mass, and further 12 to 30% by mass.
  • the details explained in the hair cosmetic composition of the first embodiment can be applied as is. Among them, those that are liquid at room temperature (particularly 25°C) are preferred. Furthermore, methylphenylpolysiloxane is preferred from the viewpoint of improving the feel of the hair (fingers can be easily run through it) while ensuring the stability of the formulation.
  • the content of silicone is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.1% by mass, further 1% by mass, and further 2% by mass.
  • the upper limit can be 40% by mass, further 20% by mass, and further 10% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 40% by mass, further 1 to 20% by mass, and further 2 to 10% by mass.
  • the types of hydrocarbons, oils and fats, waxes, and higher fatty acids can be applied as described in the hair cosmetic composition of the first embodiment.
  • those that are liquid at room temperature (especially 25°C) are preferred.
  • the polymer compound is a compound with a high molecular weight.
  • the inclusion of the polymer compound can more effectively exert the stability of the formulation.
  • the structure of the polymer compound is not limited, but it is usually an organic compound having a carbon skeleton (i.e., the polymer compound does not usually contain silicone).
  • the molecular weight is not limited, but it is usually 10,000 or more.
  • the polymer compounds can be broadly divided into oil-soluble polymer compounds that exhibit oil solubility and water-soluble polymer compounds that exhibit water solubility, and it is preferable that the hair cosmetic composition of the second embodiment contains at least one of these. In other words, it is preferable that the polymer compound contains an oil-soluble polymer compound and/or a water-soluble polymer compound.
  • the oil-soluble polymer compound is a polymer compound that dissolves in the oil phase of the hair cosmetic of the second embodiment (i.e., dissolves in the main component of the oil phase).
  • the oil-soluble polymer compound include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), fatty acid polyesters (oil-soluble fatty acid polyesters), vinyl polymers (oil-soluble vinyl polymers), and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more.
  • these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).
  • the types of cellulose derivatives can be directly applied to the contents explained in the hair cosmetic composition of the first embodiment. Among them, ethyl cellulose is preferred from the viewpoint of good solubility in the oil phase.
  • the water-soluble polymer compounds are those that dissolve in the aqueous phase of the hair cosmetic composition of the second embodiment (i.e., dissolve in water).
  • water-soluble polymer compounds include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), glucose derivatives (cyclodextrin, starch), and the like. These may be used alone or in combination of two or more.
  • these water-soluble polymers are preferably ionic, and in particular, cationic water-soluble polymers.
  • the types of cellulose derivatives can be directly applied to the contents explained in the hair cosmetic composition of the first embodiment.
  • O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred.
  • the type of polymer compound that is a water-soluble polymer having a polysaccharide other than cellulose in its structure and has cationic properties the details described in the hair cosmetic composition of the first embodiment can be applied as is.
  • the content ratio of the polymeric compound is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.5% by mass.
  • the upper limit can be 5% by mass, further 3% by mass, and further 2% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5% by mass, further 0.1 to 3% by mass, and further 0.5 to 2% by mass.
  • the hair cosmetic of the second embodiment contains a polymer compound and further contains both an oil-soluble polymer compound and a water-soluble polymer compound
  • the ratio of the content of each polymer compound in 100% by mass of the entire hair cosmetic of the second embodiment is not limited, but the lower limit can be 0.01, further 0.1, and further 0.2.
  • the upper limit can be 5, further 3, and further 1.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 5, further 0.1 to 3, and further 0.2 to 1.
  • the oxidizing agent is a component that exerts an oxidizing action.
  • the type of the oxidizing agent is not limited as long as it can exert an oxidizing action, and the contents described in the hair cosmetic composition of the first aspect can be applied as it is.
  • the content ratio of the oxidizing agent is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.1% by mass, further 2% by mass, and further 3% by mass.
  • the upper limit can be 30% by mass, further 20% by mass, and further 15% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 30% by mass, further 2 to 20% by mass, and further 3 to 15% by mass.
  • the content ratio of the stabilizer is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.2% by mass.
  • the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass.
  • the above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 10% by mass, further 0.1 to 5% by mass, and further 0.2 to 3% by mass.
  • pH adjuster an acid and/or a base can be used.
  • the details explained in the hair cosmetic composition of the first embodiment can be applied as is.
  • preservatives examples include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more kinds.
  • antioxidants examples include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more kinds.
  • the hair cosmetic of the second embodiment may contain other components in addition to the above-mentioned nonionic surfactants, ester oils, oily components other than ester oils, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, and antioxidants.
  • Other components include dispersants, protein derivatives and amino acids, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one component selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types.
  • the hair cosmetic composition of the second embodiment as described above can be suitably used, specifically, as an oxidative hair dye agent, a bleach, a dye removing agent, a dye removing agent for bleaching and decolorizing (an agent containing an oxidizing agent), a shampoo, a rinse, a treatment, a conditioner, a cleansing agent, or the like.
  • the formulation of the hair cosmetic composition of the second embodiment (formulation at 25°C) is not limited, but may be, for example, a cream, paste, liquid, gel, foam, etc.
  • the properties are not limited, and the specific viscosity is not limited, but may be, for example, 1 to 300,000 mPa ⁇ s. It may be adjusted to a particularly viscous liquid.
  • the above viscosity may be, for example, 500 to 300,000 mPa ⁇ s.
  • the lower limit of this viscosity may be 500 mPa ⁇ s, 1,000 mPa ⁇ s, or 5,000 mPa ⁇ s.
  • the upper limit of the viscosity may be 250,000 mPa ⁇ s, 225,000 mPa ⁇ s, or 200,000 mPa ⁇ s.
  • the upper and lower limits described above may be combined with each other. That is, for example, it can be 500 to 250,000 mPa ⁇ s, 1,000 to 225,000 mPa ⁇ s, or 5,000 to 200,000 mPa ⁇ s. Note that the above viscosity is measured at 25° C. using a B-type viscometer.
  • the packaging material for housing the hair cosmetic of the second embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double can-type packaging material, an applicator, a pouch, etc.
  • the packaging material for housing the hair cosmetic of the second embodiment containing the above-mentioned oxidizing agent is preferably a tube-shaped packaging material, and furthermore, from the viewpoint of formulation stability, a tube-shaped packaging material whose inner surface is made of aluminum is more preferable.
  • a pump-type packaging material or a bottle-type packaging material is preferable.
  • a pump-type packaging material is preferable from the viewpoint of ease of use.
  • the hair cosmetic composition of the second aspect may be applied to hair in any manner.
  • the hair cosmetic composition may be applied to hair using a tool such as a comb, a brush, or a spatula.
  • a tool such as a comb, a brush, or a spatula.
  • application to hair using a comb is preferred from the viewpoint of applicability.
  • the details of the comb to be used are not limited, but the same selection as in the hair cosmetic composition of the first aspect may be made.
  • it when applying the hair cosmetic composition of the second aspect to hair, it may be applied to hair using the user's hands. Furthermore, it may be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more.
  • the hair cosmetic composition may be applied to hair wet with water or warm water, or may be applied to dry hair.
  • the hair to which the hair cosmetic composition of the second embodiment is applied includes, for example, hair on the head, beard, eyebrows, body hair, and other parts of the body.
  • human hair When applied to human hair, it may be applied to hair of any condition or color. That is, it may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like.
  • Application to dyed hair includes repairing, changing, adding, and the like to the color of dyed hair.
  • the hair cosmetic of the third aspect in this third group of the invention is a hair cosmetic to be used on hair to which a hair composition that forms a water-in-oil emulsified state has been applied, and/or on hair to which a mixture of a hair cosmetic composition that forms a water-in-oil emulsified state and a hair cosmetic composition that forms an oil-in-water emulsified state has been applied, and is characterized in that it contains (A) a nonionic surfactant.
  • the hair cosmetic composition of the second embodiment described above is itself in a water-in-oil emulsified state, whereas the hair cosmetic composition of the third embodiment is not limited in the emulsified state of the hair cosmetic composition itself. That is, the hair cosmetic composition of the third embodiment may be W/O type (water-in-oil type) or O/W type (oil-in-water type). Details of each emulsified state are the same as those explained in the hair cosmetic composition of the first embodiment and the second embodiment.
  • hair compositions that form a water-in-oil type emulsified state include, without limitation, compositions that form a water-in-oil type emulsified state and are intended to be applied to hair.
  • Specific examples include (1) the hair cosmetic of the first embodiment described above, (2) a hair composition that is the same as the hair cosmetic of the first embodiment except that it does not contain a nonionic surfactant, and (3) the first agent in an oxidative hair dye, bleach, decolorizing agent, or decolorizing and decolorizing agent that forms a W/O type (water-in-oil type) emulsified state.
  • the explanation of the nonionic surfactant explained in the hair cosmetic composition of the first embodiment and the hair cosmetic composition of the second embodiment is similarly applied.
  • the content ratio of the nonionic surfactant contained in the hair cosmetic composition of the third embodiment is not limited, but when the entire hair cosmetic composition of the third embodiment is taken as 100 mass%, the lower limit can be 0.1 mass%, further 1 mass%, and further 2.5 mass%.
  • the upper limit can be 15 mass%, further 10 mass%, and further 5 mass%.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 15 mass%, further 1 to 10 mass%, and further 2.5 to 5 mass%.
  • the surfactant may be a cationic surfactant, an anionic surfactant, or an amphoteric surfactant.
  • the hair cosmetic composition of the second embodiment may contain such surfactants other than the nonionic surfactant together with the nonionic surfactant.
  • the hair cosmetic composition of the third embodiment can contain other ingredients in addition to the nonionic surfactant, as in the hair cosmetic compositions of the first and second embodiments.
  • other ingredients include ester oils, oily ingredients other than ester oils, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, dispersants, protein derivatives and amino acids, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one ingredient selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha).
  • the hair cosmetic composition of the third aspect can be suitably used as a shampoo, rinse, treatment, conditioner, cleansing agent, etc.
  • the hair cosmetic composition of the third aspect is a hair cosmetic composition used on hair to which an agent such as an oxidative hair dye, a bleach, a dye removing agent, or a bleaching and dye removing agent has been applied, in which at least one of the first agent and the second agent is a hair composition that is in a water-in-oil emulsion state, and is preferably a shampoo, rinse, treatment, conditioner, or cleansing agent, and particularly preferably a shampoo from the viewpoint of ease of rinsing.
  • the formulation (formulation at 25° C.) of the hair cosmetic composition of the third aspect is not limited and can be appropriately selected depending on the application or purpose.
  • the formulation can be a cream, emulsion (milky lotion), dispersion, paste, foam, liquid, aqueous solution, gel, solid, or the like.
  • the hair cosmetic composition of the third embodiment When the hair cosmetic composition of the third embodiment is in a liquid form, its viscosity is not limited, but the lower limit can be 50 mPa ⁇ s, 100 mPa ⁇ s, or 1000 mPa ⁇ s.
  • the upper limit can be 250,000 mPa ⁇ s, 225,000 mPa ⁇ s, or 200,000 mPa ⁇ s.
  • the above upper and lower limits can be combined. That is, for example, the viscosity can be 500 to 250,000 mPa ⁇ s, 1,000 to 225,000 mPa ⁇ s, or 10,000 to 200,000 mPa ⁇ s. The above viscosity is measured at 25°C using a B-type viscometer.
  • the packaging material for containing the hair cosmetic composition of the third embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double-can type packaging material, an aerosol type packaging material, a non-aerosol type packaging material, a squeeze foamer type packaging material, an applicator, a pouch, or the like.
  • the hair cosmetic of the third embodiment may be applied to hair in any manner.
  • the hair cosmetic of the third embodiment may be applied to hair using a tool, but typically, the user's hands may be used to apply the hair cosmetic.
  • the hair cosmetic may be applied by dipping, coating, penetration, or other operations. These may be used alone or in combination of two or more.
  • the hair cosmetic of the third embodiment may be applied to hair that is wet with water or hot water, or to dry hair, or to hair to which a hair cosmetic composition that is in a W/O type emulsion state or that utilizes a W/O type emulsion state has been applied.
  • the hair cosmetic may be applied to hair that has been applied with a hair cosmetic composition that is in a W/O type emulsion state or that utilizes a W/O type emulsion state and then rinsed with hot water.
  • the hair to which the hair cosmetic composition of the third embodiment is applied includes, for example, hair on the head, beard, eyebrows, body hair, etc. There are no limitations on the type of biological hair to which it can be applied, but it can be preferably used on human hair.
  • the hair composition in a W/O type emulsified state can be the second agent in an agent such as an oxidative hair dye, a bleaching agent, a decolorizing agent, or a decolorizing agent.
  • the first agent can contain at least one component selected from the above-mentioned oily components, polymer compounds, pH adjusters, stabilizers, preservatives, antioxidants, dispersants, protein derivatives and amino acids, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types.
  • the first agent may contain an alkali agent, a dye, a solubilizing agent, a surfactant, etc. These may be used alone or in combination of two or more kinds.
  • the alkaline agent is a component that exhibits alkalinity in a water-soluble state.
  • This alkaline agent can decompose or alter colored components such as melanin and dyes by coexisting with an oxidizing agent, thereby lightening or decolorizing the visible color. That is, regardless of whether or not the hair is dyed, the hair can be bleached by decomposing or altering the melanin contained in the hair, and the dye can be bleached by decomposing or altering the dye applied to the dyed hair.
  • the alkaline agent alone has the effect of swelling the hair, or has a hair swelling promoting effect that promotes this effect. Therefore, it is a component that can promote the above-mentioned effects inside the hair.
  • the alkaline agent includes organic bases, inorganic bases and salts thereof.
  • the organic base include organic amines, basic amino acids (arginine, lysine, and salts thereof, etc.), guanidine and its salts (guanidine carbonate, etc.), etc.
  • Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (2-amino-2-methyl-1-propanol, etc.), aminomethylpropanediol (2-amino-2-methyl-1,3-propanediol, etc.), and alkylamines such as monoethylamine and isopropylamine.
  • These organic bases may be used alone or in combination of two or more.
  • Inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc.
  • Specific examples include alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates such as sodium carbonate, alkali metal hydrogencarbonates such as sodium hydrogencarbonate, alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide, alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate, and ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate.
  • alkali metal hydroxides such as sodium hydroxide
  • alkali metal carbonates such as sodium carbonate
  • alkali metal hydrogencarbonates such as sodium hydrogencarbonate
  • alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide
  • alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate
  • ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate.
  • the amount of the alkaline agent in the first agent is not limited, but it is sufficient that the pH of the hair composition exceeds 7, and it is preferable to formulate it to be 8 or more, and more preferable to formulate it to be 9 or more. By formulating it to exceed pH 7, the bleaching effect, hair swelling effect, hair swelling promotion effect, etc., associated with the inclusion of the alkaline agent can be effectively obtained.
  • the upper limit of the pH is not limited, but it is usually formulated to be 13.5 or less, preferably 13 or less, and more preferably 12 or less. These upper and lower limit values can be arbitrarily combined.
  • the pH can be more than 7 and 13.5 or less, further 8 to 13, and further 9 to 12.
  • the pH of the hair cosmetic agent is the pH after mixing the first agent and the second agent, and is the pH at 25°C.
  • the content of the alkaline agent in the first agent is not limited, and the lower limit can be 0.1 mass%, 0.5 mass%, or 3 mass%, relative to 100 mass% of the entire first agent.
  • the upper limit can be 10 mass%, 15 mass%, or 17 mass%.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.1 to 10 mass%, 0.5 to 15 mass%, or 3 to 17 mass%.
  • the dye is a component that contributes to hair dyeing, and any dye known in the art can be used. Specifically, examples include oxidation dyes and direct dyes. These dyes can be used alone or in combination of two or more.
  • the oxidation dye is composed of at least a dye intermediate among a dye intermediate and a coupler.
  • the dye intermediate is a component that develops color by oxidative polymerization in the presence of an oxidizing agent.
  • the coupler is a component that develops color by oxidative polymerization together with the dye intermediate in the presence of an oxidizing agent, and can produce a color that cannot be obtained from an oxidative polymer of only the dye intermediate.
  • Dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluenediamine), 2,2'-[(4-aminophenyl)imino]bisethanol, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1,2,4-trihydroxybenzene, o-aminophenol, p-aminophenol, and p-methylaminophenol.
  • dye intermediates include salts of the above-mentioned various compounds.
  • Salts include acid addition salts.
  • Acid addition salts include inorganic acid addition salts such as hydrochlorides and sulfates, and organic acid addition salts such as acetates. These dye intermediates and their salts may be used alone or in combination of two or more.
  • Couplers include 2,4-diaminophenoxyethanol, ⁇ -naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, m-phenylenediamine, toluene-3,4-diamine, diphenylamine, 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid, o-aminophenol, m-aminophenol, p-aminophenol, p-methylaminophenol, and the like.
  • couplers include salts of the above-mentioned various compounds.
  • Salts include acid addition salts, and the like.
  • Acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These couplers and their salts may be used alone or in combination of two or more.
  • o-aminophenol, p-aminophenol, and p-methylaminophenol can be used both as dye intermediates and as couplers.
  • compounds other than these compounds exemplified above as couplers can be used in combination as couplers.
  • compounds other than these compounds exemplified above as dye intermediates can be used in combination as dye intermediates.
  • examples of direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more.
  • examples of ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more.
  • examples of nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.
  • Acid dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Red No. 201, Red No. 203, Red No. 220, Red No. 227, Red No. 230 (1), Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 205, Orange No. 207, Orange No. 402, Green No. 3, Green No. 204, Green No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 204, Blue No. 404, Purple No. 401, Brown No. 201, Black No. 401, etc. These may be used alone or in combination of two or more.
  • Examples of the basic dye include a basic red dye, a basic orange dye, a basic yellow dye, a basic green dye, a basic blue dye, a basic purple dye, a basic brown dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the basic red dye include basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, and basic red 118.
  • Examples of the basic orange dye include basic orange 1, basic orange 2, and basic orange 31.
  • Examples of the basic yellow dye include basic yellow 11, basic yellow 28, basic yellow 40, basic yellow 57, and basic yellow 87.
  • Examples of the basic green dye include basic green 1 and basic green 4.
  • Examples of the basic blue dye include basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 75, basic blue 77, basic blue 99, and basic blue 124.
  • Examples of basic purple dyes include basic purple 1, basic purple 2, basic purple 3, basic purple 4, basic purple 14, and basic purple 16.
  • Examples of basic brown dyes include basic brown 4, basic brown 16, and basic brown 17. These dyes may be used alone or in combination of two or more.
  • HC dye examples include HC red dye, HC orange dye, HC yellow dye, HC blue dye, HC purple dye, etc. These may be used alone or in combination of two or more kinds.
  • examples of the HC red dye include HC red 1, HC red 3, HC red 7, HC red 10, HC red 11, HC red 13, HC red 14, HC red 17, HC red 18, HC red 19, HC red 20, and HC red 21.
  • examples of the HC orange dye include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7.
  • Examples of the HC yellow dye include HC yellow 2, HC yellow 4, HC yellow 5, HC yellow 7, HC yellow 9, HC yellow 11, HC yellow 13, HC yellow 16, HC yellow 18, HC yellow 6, HC yellow 10, HC yellow 12, HC yellow 14, HC yellow 15, and HC yellow 19.
  • Examples of the HC blue dye include HC blue 2, HC blue 5, HC blue 6, HC blue 8, HC blue 9, HC blue 10, HC blue 11, HC blue 12, HC blue 13, HC blue 14, HC blue 15, HC blue 16, HC blue 18, HC blue 19, and HC blue 20.
  • Examples of the HC purple dye include HC purple 1, HC purple 2, HC purple 3, and HC purple 4. These may be used alone or in combination of two or more.
  • Disperse dyes include Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, and Disperse Violet 15. These may be used alone or in combination of two or more.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dyes, betacyanin dyes, azophyllon dyes, etc.
  • nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid and their salts, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dye
  • natural dyes include madder pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, boysenberry pigment, grape skin pigment, grape juice pigment, purple sweet potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, red yeast rice pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, sodium copper chlorophyllin, paprika pigment, lac pigment, henna, rutin, and safflower red. These may be used alone or in combination of two or more.
  • the dye content is not limited, but when the entire first agent is taken as 100% by mass, the lower limit is preferably 0.001% by mass. By making it 0.001% by mass or more, the hair dyeing effect can be effectively obtained and the color can be improved. Furthermore, the lower limit can be 0.1% by mass, and furthermore, 0.5% by mass. On the other hand, the upper limit can be 15% by mass, 10% by mass, or 6% by mass. These upper and lower limit values can be combined arbitrarily. For example, it can be 0.001 to 15% by mass, 0.1 to 10% by mass, or 0.5 to 6% by mass.
  • the solubilizer is a component that contributes to solubilizing each component contained in the first agent.
  • solubilizers include water, alcohols, etc. These may be used alone or in combination of two or more. The use of water is preferred from the viewpoint of exhibiting excellent solubility. Furthermore, the use of a combination of water and alcohols is even more preferred.
  • the alcohols include monohydric alcohols, polyhydric alcohols, and ether alcohols. These may be used alone or in combination of two or more.
  • the monohydric lower alcohol preferably has 5 or less carbon atoms, and examples thereof include ethanol, n-propanol, isopropanol, etc. These may be used alone or in combination of two or more kinds.
  • examples of the monohydric aromatic alcohol include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyl glycol, ⁇ -methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, p-anisyl alcohol, etc.
  • ether alcohol which is a monohydric alcohol and has an ether bond
  • an ether alcohol having a total of three or more hydroxy groups and ether bonds is preferable, and specific examples thereof include ethoxydiglycol (diethylene glycol monoethyl ether), methoxydiglycol (diethylene glycol monomethyl ether), diethylene glycol monobutyl ether, etc.
  • the monohydric alcohol is preferably an ether alcohol, more preferably an ether alcohol having a total of three or more hydroxy groups and ether bonds, even more preferably ethoxydiglycol and/or methoxydiglycol, and particularly preferably ethoxydiglycol.
  • the valence of the polyhydric alcohol is not limited and may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a valence of 2 to 5 is preferable.
  • the number of carbon atoms in the polyhydric alcohol is not limited and, if it is a hydrocarbon group, may be 6 or more, but from the viewpoint of improving solubility or dispersibility in the dye components, a carbon number of 2 to 5 is preferable.
  • alkanediols such as ethanediol, propanediol, butanediol, and pentanediol
  • oxydialkanols such as oxydiethanol and oxydipropanol
  • ethanediols such as ethylene glycol
  • propanediols such as propane-1,2-diol and trimethylene glycol
  • butanediols such as 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol
  • pentanediols such as isopentyldiol, 1,5-pentanediol, and 1,2-pentanediol
  • alkanetriols such as glycerin, butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol, etc.), and pentanetriol (1,2,3-pentanetriol,
  • examples of ether alcohols that are polyhydric alcohols and have an ether bond include polyalkylene glycols.
  • polyalkylene glycols include polyethylene glycols.
  • the average molecular weight (number average molecular weight) of polyethylene glycol is not limited, but is usually 100 to 5000, preferably 100 to 2500, and more preferably 100 to 2000.
  • glycerin, 1,3-butylene glycol, propylene glycol, and polyethylene glycol are preferred, and glycerin and polyethylene glycol are more preferred, with glycerin being the most preferred.
  • the surfactant may be a cationic surfactant, an anionic surfactant, an amphoteric surfactant, or a nonionic surfactant. These may be used alone or in combination of two or more.
  • the surfactant may be blended for the purpose of stably incorporating dyes, oily components, etc., into the first agent and further into the hair cosmetic agent.
  • the type of the nonionic surfactant is the same as the nonionic surfactant in the hair cosmetic composition of the first embodiment.
  • Cationic surfactants include alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkyl ether quaternary ammonium salts; amine salts such as alkylamine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and arcobel tertiary amine salts; cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts; and benzethonium chloride. These may be used alone or in combination of two or more.
  • alkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts and/or dialkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl quaternary ammonium salts.
  • Monoalkyl type quaternary ammonium salts include behenyltrimethylammonium chloride (behentrimonium chloride), lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl (16,18)trimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride (steartrimonium chloride), stearyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, disodium chloride
  • examples of such compounds include tearyl dimethyl ammonium (distearyldimonium chloride), alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP
  • Anionic surfactants include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, ⁇ -sulfonic acid salts, N-acylamino acid surfactants, mono- or diester phosphate surfactants, sulfosuccinate esters, etc. These may be used alone or in combination of two or more. Counterions of the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, etc. These may be used alone or in combination of two or more.
  • amphoteric surfactants include amino acid-type amphoteric surfactants and betaine-type amphoteric surfactants.
  • amino acid-type amphoteric surfactants include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, sodium undecylhydroxyethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-caprylamide gel, and N-coconut oil fatty acid acyl-N'-carboxyethyl-
  • surfactants examples include glycine-type amphoteric surfactants such as disodium carboxyethyl ethylenediamine, N-coconut oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethyl ethylenediamine disodium, sodium lauryl diaminoethyl glycine, and palm oil fatty acid acyl-N-carboxyethyl-N-hydroxyethyl ethylenediamine sodium; and aminopropionic acid-type amphoteric surfactants such as sodium lauryl aminopropionate, sodium lauryl aminodipropionate, and triethanolamine lauryl aminopropionate. These may be used alone or in combination of two or more.
  • Betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine; sulfobetaine-type amphoteric surfactants such as lauryl hydroxysulfobetaine, etc. These may be used alone or in combination of two or more types.
  • the content of the surfactant in the first agent as a whole (100% by mass) is not limited, but the lower limit can be 0.01% by mass, further 0.05% by mass, and further 0.1% by mass.
  • the upper limit can be 15% by mass, further 10% by mass, and further 5% by mass.
  • the above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.05 to 10% by mass, and further 0.1 to 5% by mass.
  • the first agent is usually used in combination with the second agent (i.e., for example, the hair cosmetic composition of the first embodiment described above).
  • This mixing may be done before application to the hair, or may be applied separately in sequence. That is, for example, the first agent and the second agent may be mixed on the hair.
  • the composition may be applied to the hair using a tool such as a comb, brush, or spatula.
  • a tool such as a comb, brush, or spatula.
  • it may be applied to the hair using the user's hands.
  • it may be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more.
  • application by a comb is particularly preferred from the viewpoint of ease of application.
  • the hair cosmetic composition of the present invention can eliminate this concern.
  • the composition may be applied to hair wet with water or warm water, or to dry hair.
  • [5] Use as an oxidation hair dye
  • the components shown in Table 1-4 below were mixed in the mass ratios shown in Table 1-4 to obtain a first agent (first agent containing an alkaline agent) in an oxidation hair dye.
  • the second agents of Examples 1 to 20 shown in Tables 1-1 to 1-3 were mixed with the first agent shown in Table 1-4 in a mass ratio of 1:1 to obtain a mixture (oxidation hair dye).
  • the resulting mixture was applied to a wig (manufactured by Staffs Co., Ltd.). After 15 minutes had passed since application, the mixture was washed off the wig with hot water at 40°C for 30 seconds. After washing off, the wig was visually inspected for the state of dyeing, and it was confirmed that the hair was dyed without any problems in all examples.
  • Examples 1 and 15 to 19 show that the type of the (A-2) water-soluble polymer compound is involved in the formulation stability.
  • the (A-2) water-soluble polymer compound water-soluble cellulose derivatives (cationic water-soluble cellulose derivatives) have superior formulation stability compared to water-soluble glucose derivatives.
  • a comparison of Examples 1 to 6 shows that the content ratio of the (B) oily component is involved in the formulation stability.
  • the ratio (A-1)/(A-2) of the content ratio of the oil-soluble polymer compound (A-1) to the water-soluble polymer compound (A-2) is involved in the formulation stability and rust-inhibiting effect.
  • Arithmetic mean value is 4.6 points or more 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points
  • Arithmetic mean value is 4.6 points or more 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points
  • Arithmetic mean value is 4.6 points or more 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points
  • a hair cosmetic composition (corresponding to the first agent of an oxidative hair dye) was prepared by mixing the components shown in Table 3-4 below in the mass ratios shown in Table 3-4. Then, each of the hair cosmetic compositions of Examples 1 to 12 and Comparative Example 1 shown in Tables 3-1 to 3-2 was mixed with the hair cosmetic composition shown in Table 3-4 in a mass ratio of 1:1 to obtain a mixture (hair cosmetic). The obtained mixture was applied to a wig (manufactured by Staffs Co., Ltd.) using a comb. After 15 minutes had passed since application, the mixture was washed off the wig with hot water at 40° C. for 30 seconds.
  • the wig After rinsing, the wig was visually inspected and tactilely checked to evaluate the presence and degree of stickiness and greasiness due to residual hair cosmetics.
  • the evaluation was performed by five expert panelists, who selected the score that was closest to their perception in light of the following evaluation criteria (1), and the arithmetic mean of the scores selected by the five expert panelists was calculated.
  • Arithmetic mean value is 4.7 points or more (excellent) 4: Arithmetic mean value is 4.1 points or more and less than 4.7 points (good) 3: Arithmetic mean value is 3.6 points or more and less than 4.1 points (acceptable) 2: Arithmetic mean value is 2.6 points or more and less than 3.6 points (slightly poor) 1: Arithmetic mean value is less than 2.6 points (poor)
  • Arithmetic mean value is 4.6 points or more (excellent) 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points (good) 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points (acceptable) 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points (slightly poor) 1: Arithmetic mean value is less than 1.6 points (poor)
  • Example 6 since the wash-off performance in Example 6 is "3" (Example 6), whereas the wash-off performance in Example 7 is “4" (Example 7), and the wash-off performance in Example 1 is "5" (Example 1), it is seen that in the hair cosmetic composition in a W/O type emulsion state, it is preferable from the viewpoint of formulation stability to contain a nonionic surfactant in an amount of more than 0.05% by mass. Furthermore, since the formulation stability in Example 9 was "3" (Example 9) while the formulation stability in Example 1 was "4" (Example 1), it is found that in the W/O type emulsion hair cosmetic composition, it is preferable from the viewpoint of formulation stability to contain less than 6 mass% of a nonionic surfactant.
  • Example 1 Example 10, and Example 11 with Example 12
  • the external gloss of the hair cosmetic composition itself is "3" (Example 12)
  • a nonionic surfactant other than POE alkyl ether is used, the external gloss of the hair cosmetic composition itself is "5" (Example 1, Example 10, Example 11), indicating that the use of a nonionic surfactant other than POE alkyl ether improves the external gloss of the hair cosmetic composition itself.
  • Example 1 in a hair cosmetic composition in a W/O type emulsion state, when the ester oil is not included, the rinsing performance is "3" (Example 6), whereas when the ester oil is included, the rinsing performance is "5" (Example 1), indicating that the use of ester oil improves the rinsing performance.
  • first, second and third group inventions are not limited to the specific forms shown above, and various modifications may be made within the scope of the first, second and third group inventions depending on the purpose and application.

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Abstract

Le but de la présente invention est de fournir : une composition de second agent pour un agent cosmétique capillaire, la composition de second agent ayant une constitution différente des compositions classiques, permettant la manipulation d'un agent contenant un oxydant dans un état d'émulsion eau dans huile, et permettant d'obtenir la stabilité de l'agent entier tout en assurant la stabilité de l'oxydant ; et un agent cosmétique capillaire. Cette composition de second agent pour un agent cosmétique capillaire est destinée à un agent cosmétique capillaire comprenant un premier agent et un second agent et constitue le second agent. Le second agent contient un oxydant et un composé polymère (A), et est dans un état d'émulsion eau dans huile. Cet agent cosmétique capillaire comprend un premier agent et un second agent, le premier agent contenant un agent alcalin et le second agent étant le second agent selon la revendication 1.
PCT/JP2024/037417 2023-10-24 2024-10-21 Composition de second agent pour agent cosmétique capillaire, agent cosmétique capillaire et kit cosmétique capillaire Pending WO2025089232A1 (fr)

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JP2023182878A JP2025072260A (ja) 2023-10-24 2023-10-24 毛髪化粧料及び毛髪化粧料キット
JP2023182876A JP2025072258A (ja) 2023-10-24 2023-10-24 毛髪化粧剤用第２剤組成物及び毛髪化粧剤
JP2023-182876 2023-10-24
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WO2016021425A1 (fr) * 2014-08-08 2016-02-11 株式会社マンダム Colorant capillaire oxydant, procédé de production pour mélange de colorants capillaires oxydants, et procédé de colorant capillaire oxydant
JP2019011293A (ja) * 2017-06-30 2019-01-24 ホーユー株式会社 酸化剤含有組成物及びその使用方法
JP2019167337A (ja) * 2018-03-23 2019-10-03 中野製薬株式会社 ２剤式酸化染毛または脱色剤組成物および染毛または脱色を行う方法
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JP2022117215A (ja) * 2021-01-29 2022-08-10 ホーユー株式会社 毛髪脱色・脱染用又は染毛用組成物

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH092924A (ja) * 1995-06-16 1997-01-07 Shiseido Co Ltd 毛髪処理剤、毛髪処理方法及び毛髪処理用乳化物
JPH111415A (ja) * 1997-04-16 1999-01-06 Sanyo Chem Ind Ltd 毛髪処理剤
WO2016021425A1 (fr) * 2014-08-08 2016-02-11 株式会社マンダム Colorant capillaire oxydant, procédé de production pour mélange de colorants capillaires oxydants, et procédé de colorant capillaire oxydant
JP2019011293A (ja) * 2017-06-30 2019-01-24 ホーユー株式会社 酸化剤含有組成物及びその使用方法
JP2019167337A (ja) * 2018-03-23 2019-10-03 中野製薬株式会社 ２剤式酸化染毛または脱色剤組成物および染毛または脱色を行う方法
JP2021172619A (ja) * 2020-04-27 2021-11-01 株式会社ミルボン 酸化染毛剤、酸化染毛剤用第１剤、酸化染毛剤用第２剤、及び染毛方法
JP2022117215A (ja) * 2021-01-29 2022-08-10 ホーユー株式会社 毛髪脱色・脱染用又は染毛用組成物

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