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WO2025057755A1 - Composition cosmétique en émulsion de type eau dans huile - Google Patents

Composition cosmétique en émulsion de type eau dans huile Download PDF

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Publication number
WO2025057755A1
WO2025057755A1 PCT/JP2024/031004 JP2024031004W WO2025057755A1 WO 2025057755 A1 WO2025057755 A1 WO 2025057755A1 JP 2024031004 W JP2024031004 W JP 2024031004W WO 2025057755 A1 WO2025057755 A1 WO 2025057755A1
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Prior art keywords
mass
oil
parts
less
polar
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Japanese (ja)
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和貴 金山
隆志 福原
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Shiseido Co Ltd
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Shiseido Co Ltd
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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
    • A61K8/27—Zinc; Compounds thereof
    • 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
    • A61K8/29—Titanium; Compounds thereof
    • 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
    • A61K8/31—Hydrocarbons
    • 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
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic 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
    • A61K8/37—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
    • A61K8/72—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
    • 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
    • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

  • the present invention relates to a water-in-oil emulsion cosmetic composition.
  • UV scattering agent particles are generally used as UV protection agents by dispersing them in an oil-based medium. However, because UV scattering agent particles have a tendency to aggregate, various studies have been conducted on the dispersibility, stability, usability, etc., of the particles when they are incorporated into cosmetic compositions.
  • Patent Document 1 discloses a composition that exhibits good dispersibility of high concentrations of ultraviolet scattering agent particles while maintaining good usability. More specifically, the composition of Patent Document 1 is a composition in which ultraviolet scattering agent particles are dispersed in a mixture of polar oil, hydrocarbon oil, silicone oil, and polyhydroxystearic acid, and the polar oil is 10 parts by mass or more and 70 parts by mass or less per 100 parts by mass of the polar oil, hydrocarbon oil, and silicone oil, the hydrocarbon oil is 1.0 parts by mass or more and 60 parts by mass or less per 100 parts by mass of the polar oil, hydrocarbon oil, and silicone oil, the silicone oil is 10 parts by mass or more and 50 parts by mass or less per 100 parts by mass of the polar oil, hydrocarbon oil, and silicone oil, the ultraviolet scattering agent particles are 30 parts by mass or more per 100 parts by mass of the polar oil, hydrocarbon oil, and silicone oil, and the mass ratio of polyhydroxystearic acid to ultraviolet scattering agent particles (mass of polyhydroxystearic acid/mas
  • Patent Document 2 also discloses a cosmetic that has high powder dispersibility, excellent usability, and good stability over time. More specifically, the cosmetic of Patent Document 2 is a powder dispersion composition that contains (A) powder, (B) oil, and (C) polyglyceryl polyricinoleate, in which the (B) oil contains (b1) polar oil and (b2) volatile oil, the (b1) polar oil accounts for 35 to 80% by mass of the total (B) oil, 20% by mass or more of the (b2) volatile oil is a volatile hydrocarbon oil, and (C) polyglyceryl polyricinoleate is 0.5 to 10% by mass of the total amount of the powder dispersion composition.
  • the cosmetic of Patent Document 2 is a powder dispersion composition that contains (A) powder, (B) oil, and (C) polyglyceryl polyricinoleate, in which the (B) oil contains (b1) polar oil and (b2) volatile oil, the (b1) polar oil accounts for 35 to 80% by mass of the total (
  • compositions such as sunscreen cosmetics even if the dispersibility of UV scattering agent particles is temporarily improved, the UV scattering agent particles that have settled due to standing still or the like may clump together and not return to their original dispersed state even when shaken (i.e., particle caking phenomenon) may occur. Furthermore, cosmetic compositions containing UV scattering agent particles still have room for improvement in terms of emulsion stability, usability, etc.
  • the present invention seeks to improve the above-mentioned circumstances, and an object of the present invention is to provide a water-in-oil emulsion cosmetic composition which has good caking resistance of ultraviolet scattering agent particles, is excellent in emulsion stability and usability, and further has excellent compatibility with the skin after application.
  • excellent compatibility with the skin after application means that when a cosmetic composition containing ultraviolet scattering agent particles is applied to the skin, it has the effect of being white immediately after application, which makes the surface on which it is applied highly visible and makes uncoated areas easily visible at a glance, making it easy to use. Furthermore, after a certain time has passed since it was applied to the skin (e.g., 1 minute or more, 2 minutes or more, 5 minutes or more, 10 minutes or more, 15 minutes or more, or 20 minutes or more), the transparency of the coating film formed on the skin becomes high, meaning that it has the effect of being less likely to cast a white cast.
  • the present invention which achieves the above objective, is as follows:
  • a water-in-oil emulsion cosmetic composition An oil-based medium; ultraviolet scattering agent particles dispersed in the oil-based medium; A dispersant for the ultraviolet scattering agent particles; a silicone surfactant having an HLB value of 8.0 or less; and water, and a composition that satisfies all of the following conditions (I) to (V):
  • Condition (I) The oil-based medium contains at least one of a polar oil and a polar silicone oil, and a non-polar silicone oil, or at least one of a polar oil and a polar silicone oil, a hydrocarbon oil, and a non-polar silicone oil, and at least a part of the oil-based medium is a volatile component;
  • Condition (II) The non-polar silicone oil is 55 parts by mass or more per 100 parts by mass of the oil medium;
  • Condition (III) the dispersant contains polyhydroxystearic acid and/or polyglyceryl polyricinoleate, and the content ratio of the ultraviolet scattering agent particles to the dis
  • the total amount of the polar oil and the polar silicone oil after removing the volatile components is 20 parts by mass or more relative to 100 parts by mass of the oil-based medium after removing the volatile components; the amount of the hydrocarbon oil after removing the volatile components is 70 parts by mass or less per 100 parts by mass of the total of the oil medium after removing the volatile components, and the amount of the non-polar silicone oil after removing the volatile components is 40 parts by mass or less per 100 parts by mass of the total of the oil medium after removing the volatile components, and in the condition (II), the amount of the polar oil and the polar silicone oil is 10 parts by mass or more per 100 parts by mass of the total of the oil medium,
  • ⁇ Aspect 6> In the above condition (I), When the volatile components of the oil medium are excluded from the calculation, The dispersant is 1.0 part by mass or more and 30 parts by mass or less relative to 100 parts by mass of the total of the oil medium after removing the volatile components and the dispersant.
  • Aspect 7 The composition according to any one of aspects 1 to 6, wherein the ultraviolet scattering agent particles are 10 parts by mass or more per 100 parts by mass of the oil medium in total.
  • ⁇ Aspect 8> The composition according to any one of Aspects 1 to 7, wherein the ultraviolet scattering agent particles are at least one selected from the group consisting of titanium oxide, zinc oxide, iron oxide, and cerium oxide.
  • non-polar silicone oil comprises a linear non-polar silicone oil.
  • Aspect 10 Aspect 10. The composition of any one of aspects 1 to 9, wherein the non-polar silicone oil comprises dimethicone. ⁇ Aspect 11> 11. The composition of claim 10, wherein the polar silicone oil comprises a methylphenylpolysiloxane. ⁇ Aspect 12> Aspect 12. The composition of any one of aspects 1-11, wherein the polar oil does not contain an ultraviolet absorber. ⁇ Aspect 13> Aspect 13. The composition according to any one of aspects 1 to 12, wherein the water content is less than 30% by weight. ⁇ Aspect 14> Aspect 14. The composition according to any one of aspects 1 to 13, which is a sunscreen cosmetic composition.
  • the present invention can provide a water-in-oil emulsion cosmetic composition that has good caking resistance of UV scattering agent particles, excellent emulsion stability and ease of use, and excellent skin compatibility after application.
  • FIG. 1 is a graph showing the absorbance from 280 nm to 400 nm immediately after application of the composition of Example 1 and after 20 minutes.
  • the water-in-oil emulsion cosmetic composition of the present invention (hereinafter, also simply referred to as the "composition of the present invention") is An oil-based medium; UV scattering agent particles dispersed in an oil-based medium; A dispersant for ultraviolet scattering agent particles; a silicone surfactant having an HLB value of 8.0 or less; and water, and the composition satisfies all of the following conditions (I) to (V):
  • Condition (I) contains at least one of a polar oil and a polar silicone oil, and a non-polar silicone oil, or contains at least one of a polar oil and a polar silicone oil, a hydrocarbon oil, and a non-polar silicone oil, and at least a part of the oil-based medium is a volatile component;
  • Condition (II) The non-polar silicone oil is 55 parts by mass or more per 100 parts by mass of the total oil medium;
  • Condition (III) the dispersant contains polyhydroxysteadiol, terpolymer, or
  • composition of the present invention contains the specific components described above and satisfies all of the above conditions (I) to (V), so that the UV scattering agent particles have good caking resistance, excellent emulsion stability and ease of use, and excellent skin compatibility after application.
  • composition of the present invention can achieve the above-mentioned effects because it contains the specific components mentioned above and satisfies all of the above-mentioned conditions (I) to (V). Without being limited by theory, the specific factors that enable the composition of the present invention to achieve the effects of the present invention are speculated to be as follows.
  • the inventors' intensive research has revealed that in compositions in which UV scattering particles are dispersed, the dispersibility of the UV scattering particles can be improved, but if the dispersibility of the UV scattering particles is improved too much, a caking phenomenon will occur at a certain dispersion state.
  • the inventors have devised a novel idea to prevent the caking phenomenon by not excessively improving the dispersibility of the UV scattering agent particles in the composition before use (i.e., while it is in storage). It is presumed that after the composition of the present invention is applied to the skin, the composition changes due to the evaporation of some of the components of the oily medium contained therein, thereby further improving the dispersibility of the UV scattering agent particles.
  • the improved dispersibility of the UV scattering agent particles in the composition of the present invention after application to the skin compared to before use can also be said to be one of the effects of the present invention that "excels in compatibility with the skin after application.”
  • Another factor that can improve the caking resistance of the UV scattering agent particles in the composition of the present invention is thought to be the fact that the content ratio of the silicone surfactant to the dispersant in condition (V) described above is adjusted to less than 1.0.
  • the caking resistance of the UV scattering particles can be evaluated based on a sedimentation evaluation test.
  • a sedimentation evaluation test please refer to the experimental section of the examples described later.
  • composition of the present invention to have excellent emulsion stability is believed to be the incorporation of a silicone-based surfactant with an HLB value of 8.0 or less into the composition of the present invention.
  • the emulsion stability can be evaluated based on a rolling test.
  • a rolling test please refer to the experimental section of the examples described below.
  • the main factor that makes the composition of the present invention easy to use is believed to be that the oil content of the silicone surfactant with an HLB value of 8.0 or less is adjusted to 3.0 mass % or less, as specified in the above condition (IV).
  • composition of the present invention being "excellent in compatibility with the skin after application” is believed to be mainly due to the use of a volatile component as at least a part of the oil medium, and the change in the composition of the oil medium due to the evaporation of the volatile components of this oil medium after the composition of the present invention is applied to the skin.
  • composition of the present invention Another factor that allows the composition of the present invention to have "good skin compatibility after application” is thought to be the fact that the content ratio of the UV scattering agent particles to the dispersant is adjusted to 10.0 or less, as stipulated in the above-mentioned condition (III).
  • the effect of "excellent skin compatibility after application” can be evaluated, for example, by the change in absorbance between the initial state and after a certain period of time.
  • excellent skin compatibility after application please refer to the experimental section of the examples described below.
  • compositions of the present invention comprise an oily medium.
  • the oil medium of the present invention contains at least one of a polar oil and a polar silicone oil, and a non-polar silicone oil, or at least one of a polar oil and a polar silicone oil, a hydrocarbon oil, and a non-polar silicone oil.
  • the oil medium of the present invention essentially contains at least one of a polar oil and a polar silicone oil, and a non-polar silicone oil, but may or may not contain a hydrocarbon oil. At least a portion of the oil medium of the present invention is a volatile component.
  • volatile oil medium refers to one that exhibits a volatile content of more than 20% when left at atmospheric pressure and 30°C for 120 minutes.
  • non-volatile oil medium refers to one that exhibits a volatile content of 20% or less when left at atmospheric pressure and 30°C for 120 minutes.
  • composition of the present invention may contain a polar oil.
  • polar oil refers to an oil with high polarity among oils usable in cosmetics other than silicone oil, for example, an IOB value of 0.10 or more, 0.11 or more, 0.12 or more, or 0.13 or more.
  • IOB value of the polar oil according to the present invention may be 0.50 or less, 0.45 or less, or 0.40 or less.
  • the IOB value is an abbreviation for Inorganic/Organic Balance, which is a value that represents the ratio of the inorganic value to the organic value, and is an index that indicates the degree of polarity of an organic compound.
  • the "organic value” and “organic value” for example, the "organic value” is 20 for one carbon atom in a molecule, and the “inorganic value” is 100 for one hydroxyl group, and the "inorganic value” is set according to various atoms or functional groups.
  • the IOB value of the organic compound can be calculated (see, for example, "Organic Conceptual Diagram - Basics and Applications” by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984).
  • the polar oil may be a volatile polar oil, a non-volatile polar oil, or a mixture thereof. Note that most polar oils used in cosmetics are non-volatile.
  • the content of the polar oil is not particularly limited, but from the viewpoint of dispersibility of the ultraviolet scattering agent particles, the polar oil may be, for example, 10 parts by mass or more relative to 100 parts by mass of the total oil medium. More specifically, in the composition of the present invention, the polar oil may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more relative to 100 parts by mass of the total oil medium, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • the total of the polar oil and the polar silicone oil may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more relative to 100 parts by mass of the total oil medium, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • the polar oil after removal of the volatile components may be 20 parts by mass or more, 25 parts by mass or more, 30 parts by mass or more, 35 parts by mass or more, 45 parts by mass or more, 50 parts by mass or more, 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, 70 parts by mass or more, 75 parts by mass or more, 80 parts by mass or more, 85 parts by mass or more, 90 parts by mass or more, 95 parts by mass or more, or 100 parts by mass (i.e., all of the oil medium after removal of the volatile components is polar oil after removal of the volatile components) per 100 parts by mass of the total oil medium after removal of the volatile components.
  • the total of the polar oil and the polar silicone oil after removing the volatile components may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more, relative to 100 parts by mass of the total oil medium after removing the volatile components, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • the phrase "when calculated excluding the volatile components of the oily medium” can be understood to correspond to the change in the composition of the oily medium caused by the volatilization of the volatile components contained in the oily medium after the composition of the present invention is applied to the skin.
  • the polar oil may contain, for example, an ester oil, an ultraviolet absorber, or a mixture thereof, but from the viewpoint of obtaining a non-sticky feel when used, it is preferable that the polar oil does not contain an ultraviolet absorber.
  • the amount of ester oil contained in the polar oil may be, for example, 50 parts by mass or more, 60 parts by mass or more, 70 parts by mass or more, 80 parts by mass or more, 90 parts by mass or more, or 100 parts by mass per 100 parts by mass of the total polar oil (i.e., all of the polar oil is ester oil).
  • ultraviolet absorbents include, but are not limited to, benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, ⁇ , ⁇ -diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranil derivatives, imidazoline derivatives, benzalmalonate derivatives, 4,4-diarylbutadiene derivatives, etc.
  • those having a relatively large molecular weight, which are difficult to absorb subcutaneously and those which are low irritation types are preferably used.
  • UV absorbers include, but are not limited to, bisethylhexyloxyphenol methoxyphenyl triazine (Tinosorb (registered trademark) S), methylene bisbenzotriazolyl tetramethylbutylphenol (Tinosorb (registered trademark) M), diethylamino hydroxybenzoyl hexyl benzoate (Ubinal Ubinal A Plus A Plus), ethylhexyl triazone (Ubinal Ubinal A Plus T150), terephthalidene dicamphor sulfonic acid (Megizolil (registered trademark) SX), and drometrizole trisiloxane (Megizolil (registered trademark) XL).
  • the polar oil of the present invention preferably does not contain an ultraviolet absorber, but if it does contain an ultraviolet absorber, the content may be, for example, 0.05 parts by mass or more, 0.1 parts by mass or more, or 0.5 parts by mass or more, and may be 50 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, or 1.0 parts by mass or less, relative to a total of 100 parts by mass of the polar oil.
  • silicone oil can be classified into polar silicone oil and non-polar silicone oil.
  • non-polar silicone oil refers to the silicone oil that has a main skeleton of siloxane bond among oils that can be used in cosmetics, and is not modified or denatured with polar functional groups or functional groups that are compatible with the above-mentioned polar oils.
  • polar silicone oil refers to the silicone oil that has a main skeleton of siloxane bond, but is modified or denatured with polar functional groups or functional groups that are compatible with the above-mentioned polar oils.
  • composition of the present invention contains a non-polar silicone oil.
  • composition of the present invention does not contain the above-mentioned polar oil, it contains a polar silicone oil.
  • the polar silicone oil and non-polar silicone oil may be volatile polar silicone oil and non-polar silicone oil, non-volatile polar silicone oil and non-polar silicone oil, or a mixture thereof. From the viewpoint of improving the effects of the present invention, it is preferable that the composition of the present invention contains a volatile non-polar silicone oil. In other words, it is preferable that at least a part of the non-polar silicone oil in the composition of the present invention is a volatile component. Furthermore, when the composition of the present invention contains a polar silicone oil, it is preferable that the polar silicone oil is non-volatile.
  • the non-polar silicone oil is 55 parts by mass or more relative to a total of 100 parts by mass of the oil medium. More specifically, the non-polar silicone oil may be 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, or 70 parts by mass or more relative to a total of 100 parts by mass of the oil medium, and may be 83 parts by mass or less, 80 parts by mass or less, 75 parts by mass or less, 70 parts by mass or less, 65 parts by mass or less, or 60 parts by mass or less.
  • the content of the non-polar silicone oil after removing the volatile components is not particularly limited with respect to a total of 100 parts by mass of the oil medium after removing the volatile components.
  • the content of the non-polar silicone oil after removing the volatile components may be 40 parts by mass or less, 35 parts by mass or less, 30 parts by mass or less, 25 parts by mass or less, 20 parts by mass or less, 15 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, 1.0 parts by mass or less, or 0 parts by mass (i.e., all of the non-polar silicone oil is volatile), and may be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 5.0 parts by mass or more, or 10 parts by mass or more with respect to a total of 100 parts by mass of the oil medium after removing the volatile components.
  • the content of the non-polar silicone oil is within the above-mentioned range from the viewpoint of improving the dispersibility of the ultraviolet scattering agent particles after the composition of the present invention is applied to the skin.
  • the non-polar silicone oil may be an acyclic non-polar silicone oil (i.e., a chain non-polar silicone oil, preferably a linear non-polar silicone oil) or a cyclic non-polar silicone oil.
  • acyclic non-polar silicone oils are preferably used, for example, from the viewpoint of improving usability.
  • non-polar silicone oils include, but are not limited to, linear silicone oils such as polydimethylsiloxane (also referred to as “dimethicone”) and methylhydrogenpolysiloxane, cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and mixtures of two or more of these.
  • polydimethylsiloxanes for example, “Dimethicone 1cs (Octamethyltrisiloxane)", “Dimethicone 1.5cs (Decamethyltetrasiloxane)", and “Dimethicone 2.0cs” may be used as volatile components, and “Dimethicone 6cs” and “Dimethicone 10cs” may be used as non-volatile components.
  • polar silicone oils include, but are not limited to, phenyl trimethicone, diphenylsiloxyphenyl trimethicone (also called “methylphenyl polysiloxane”).
  • the content of the polar silicone oil is not particularly limited, and may be, for example, 10 parts by mass or more relative to a total of 100 parts by mass of the oil medium.
  • the polar silicone oil may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more relative to a total of 100 parts by mass of the oil medium, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • the total of the polar oil and the polar silicone oil may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more relative to a total of 100 parts by mass of the oil medium, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • the polar silicone oil after removal of the volatile components may be 20 parts by mass or more, 25 parts by mass or more, 30 parts by mass or more, 35 parts by mass or more, 45 parts by mass or more, 50 parts by mass or more, 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, 70 parts by mass or more, 75 parts by mass or more, 80 parts by mass or more, 85 parts by mass or more, 90 parts by mass or more, 95 parts by mass or more, or 100 parts by mass (i.e., the entire oil medium after removal of the volatile components is polar silicone oil after removal of the volatile components) per 100 parts by mass of the total oil medium after removal of the volatile components.
  • the total of the polar oil and the polar silicone oil after removing the volatile components may be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more, relative to 100 parts by mass of the total oil medium after removing the volatile components, and may be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.
  • compositions of the present invention may optionally include a hydrocarbon oil, where "hydrocarbon oil” refers to a hydrocarbon oil other than a polar oil.
  • the hydrocarbon oil may be a volatile hydrocarbon oil, a non-volatile hydrocarbon oil, or a mixture thereof.
  • the amount of the hydrocarbon oil may be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 2.0 parts by mass or more, 3.0 parts by mass or more, 4.0 parts by mass or more, 5.0 parts by mass or more, 6.0 parts by mass or more, 7.0 parts by mass or more, or 8.0 parts by mass or more, relative to a total of 100 parts by mass of the oil medium, and may be 20 parts by mass or less, 19 parts by mass or less, 18 parts by mass or less, 17 parts by mass or less, 16 parts by mass or less, 15 parts by mass or less, or 14 parts by mass or less.
  • the hydrocarbon oil after removing the volatile components when calculated excluding the volatile components of the oil medium, may be 70 parts by mass or less, 60 parts by mass or less, 50 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, 1.0 parts by mass or less, or 0 parts by mass (i.e., all of the hydrocarbon oil is volatile), or may be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 5.0 parts by mass or more, or 10 parts by mass or more, based on a total of 100 parts by mass of the oil medium after removing the volatile components.
  • hydrocarbon oils include, but are not limited to, decane, dodecane, isododecane, isohexadecane, undecane, tridecane, liquid paraffin, olefin oligomer, squalane, squalene, paraffin, and mixtures of two or more of these.
  • the composition of the present invention includes ultraviolet light scattering particles.
  • the UV scattering agent particles are dispersed in an oily medium. More specifically, the UV scattering agent particles are dispersed in a mixture of an oily medium and a dispersant for the UV scattering agent particles (i.e., a dispersant containing polyhydroxystearic acid and/or polyglyceryl polyricinoleate). Even more specifically, by forming a state in which the dispersant for the UV scattering agent particles is adsorbed and oriented at the interface between the UV scattering agent particles and the oily medium, the interparticle interaction between the UV scattering agent particles in the oily medium is controlled, which is believed to improve the dispersibility and caking resistance of the UV scattering agent particles.
  • a dispersant for the UV scattering agent particles i.e., a dispersant containing polyhydroxystearic acid and/or polyglyceryl polyricinoleate.
  • the content of the UV scattering particles is not particularly limited, and may be, for example, 10 parts by mass or more relative to a total of 100 parts by mass of the oil-based medium. From the viewpoint of obtaining a higher SPF, the UV scattering particles may be 10 parts by mass or more, 20 parts by mass or more, or 25 parts by mass or more relative to a total of 100 parts by mass of the oil-based medium.
  • the upper limit of the amount of the UV scattering particles dispersed in the oil-based medium is not particularly limited, and, for example, the UV scattering particles may be 200 parts by mass or less, 100 parts by mass or less, 50 parts by mass or less, or 30 parts by mass or less relative to a total of 100 parts by mass of the oil-based medium.
  • the ultraviolet scattering particles are not particularly limited as long as they have an ultraviolet protection effect, and may be, for example, at least one selected from the group consisting of titanium oxide, zinc oxide, iron oxide, and cerium oxide.
  • the ultraviolet scattering particles may be hydrophobized or untreated.
  • the hydrophobization may be performed using a known surface treatment agent that provides hydrophobization, and examples of such treatment include fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, dextrin fatty acid ester treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, and silazane compound treatment.
  • treatment with silicone or silicone resin, treatment with silane compound or silazane compound, and metal soap treatment such as stearic acid/aluminum hydroxide are preferred from the viewpoint of dispersion stability, etc.
  • the average primary particle diameter of the ultraviolet scattering agent particles is not particularly limited, and may be, for example, 5 nm or more, 10 nm or more, or 15 nm or more, and may be 200 nm or less, 100 nm or less, or 50 nm or less.
  • the "average primary particle diameter" may be determined as the diameter of a circle equivalent to the projected area of the primary particles in a TEM image.
  • the shape of the ultraviolet scattering agent particles is not particularly limited, and examples include spherical, plate-like, rod-like, spindle-like, needle-like, and irregular shapes.
  • the composition of the present invention includes a dispersion of ultraviolet light scattering particles.
  • the dispersant for the UV scattering agent particles mainly serves to uniformly disperse the UV scattering agent particles in the oil-based medium.
  • the content ratio of the ultraviolet scattering agent particles to the dispersant of the ultraviolet scattering agent particles is 10.0 or less.
  • this content ratio of 10.0 or less is preferable from the viewpoint of more easily obtaining "good skin compatibility after application” and from the viewpoint of more effectively dispersing the ultraviolet scattering agent particles.
  • the content ratio of the ultraviolet scattering agent particles to the dispersant of the ultraviolet scattering agent particles may be, for example, 10.0 or less, 9.0 or less, 8.0 or less, 7.0 or less, 6.0 or less, 5.0 or less, or 4.0 or less, or may be 1.0 or more, 2.0 or more, 3.0 or more, or 4.0 or more.
  • the dispersant of the ultraviolet scattering agent particles may be, for example, 1.0 parts by mass or more, 1.5 parts by mass or more, 2.0 parts by mass or more, 2.5 parts by mass or more, 3.0 parts by mass or more, 3.5 parts by mass or more, 4.0 parts by mass or more, 4.5 parts by mass or more, 5.0 parts by mass or more, 5.5 parts by mass or more, 6.0 parts by mass or more, 6.5 parts by mass or more, 7.0 parts by mass or more, 7.5 parts by mass or more, 8.0 parts by mass or more, 8.5 parts by mass or more, 9.0 parts by mass or more, 9.5 parts by mass or more, or 10 parts by mass or more, or may be 30 parts by mass or less, 25 parts by mass or less, 20 parts by mass or less, 15 parts by mass or less, 14 parts by mass or less, 13 parts by mass or less, 12 parts by mass or less, 11 parts by mass or less, or 10 parts by mass or less.
  • the dispersant for the UV scattering particles contains polyhydroxystearic acid and/or polyglyceryl polyricinoleate.
  • Polyhydroxystearic acid is a compound in which hydroxystearic acid is oligomerized by forming an ester bond.
  • the degree of polymerization of polyhydroxystearic acid is not particularly limited and may be, for example, 4 to 8.
  • polyhydroxystearic acid products including, but not limited to, HS Oligomer 600 (manufactured by Toyokuni Oil Mills Co., Ltd.) and Salacos HS-6C (manufactured by Nisshin Oillio Co., Ltd.).
  • Polyglyceryl polyricinoleate is an ester of a condensation product (condensed ricinoleic acid) in which ricinoleic acids, which are higher fatty acids having 18 carbon atoms, are ester-bonded to each other, and polyglycerin having an average degree of polymerization of 2 to 10.
  • a typical example is polyglyceryl-6 polyricinoleate.
  • polyglyceryl polyricinoleate products can be used, including, but not limited to, NIKKOL Decaglyn PR-20 (Nikko Chemicals Co., Ltd.), SY Glister CR-310, CR-500, CRS-75 (all from Sakamoto Yakuhin Kogyo Co., Ltd.), etc.
  • composition of the present invention contains a silicone surfactant having an HLB value of 8.0 or less.
  • a silicone surfactant is a non-ionic surfactant that has a silicone structure (hydrophobic portion) and a hydrophilic portion in the molecule.
  • a silicone surfactant with an HLB value of 8.0 or less can improve emulsion stability.
  • HLB hydrophilic-lipophilic balance
  • the HLB value of a mixed surfactant composed of two or more silicone surfactants is calculated as follows.
  • the HLB value of the mixed surfactant is the phase arithmetic average of the HLB values of the individual silicone surfactants based on their blending ratio.
  • Mixed HLB value ⁇ (HLBx ⁇ Wx) / ⁇ Wx
  • HLBx represents the HLB value of silicone surfactant X.
  • Wx represents the weight (g) of silicone surfactant X having the HLBx value.
  • the silicone surfactant may have an HLB value of 8.0 or less, and more specifically, the HLB value may be, for example, 8.0 or less, 7.5 or less, 7.0 or less, 6.5 or less, 6.0 or less, 5.5 or less, 5.0 or less, 4.5 or less, 4.0 or less, 3.5 or less, 3.0 or less, or 2.5 or less, or may be 0.5 or more, 1.0 or more, 1.5 or more, 2.0 or more, 2.5 or more, 3.0 or more, 3.5 or more, or 3.8 or more.
  • the structure of the silicone surfactant is not particularly limited, and may be, for example, a straight-chain type, a branched type, or a copolymer type.
  • the silicone surfactant may have an HLB value of 8.0 or less, and examples thereof include, but are not limited to, polyether-modified silicone, polyglyceryl-modified silicone, glyceryl-modified silicone, polyether-alkyl co-modified silicone, and polyglycerin-alkyl co-modified silicone.
  • silicone surfactants include, but are not limited to, PEG-10 dimethicone (HLB value 2.0), lauryl PEG-9 polydimethylsiloxyethyl dimethicone (HLB value 2.8), PEG-9 polydimethylsiloxyethyl dimethicone (HLB value 3.8), and PEG-12 dimethicone (HLB value 8.0).
  • the silicone surfactant having an HLB value of 8.0 or less is 3.0% by mass or less. This content of 3.0% by mass or less is particularly preferred from the viewpoint of improving the usability of the composition of the present invention. More specifically, the content of the silicone surfactant having an HLB value of 8.0 or less may be 3.0% by mass or less, 2.5% by mass or less, 2.0% by mass or less, 1.5% by mass or less, 1.0% by mass or less, 0.5% by mass or less, or 0.3% by mass or less, and may be 0.1% by mass or more, 0.2% by mass or more, 0.3% by mass or more, 0.4% by mass or more, or 0.5% by mass or more, based on the entire composition.
  • the content ratio of the silicone surfactant having an HLB value of 8.0 or less to the dispersant of the above-mentioned UV scattering agent particles is less than 1.0.
  • This content ratio of less than 1.0 is particularly preferable from the viewpoint of improving the caking resistance of the UV scattering agent particles.
  • the content of the silicone surfactant having an HLB value of 8.0 or less is greater than the content of the dispersant of the UV scattering agent particles, it may also affect the dispersion state of the UV scattering agent particles.
  • the content ratio of the silicone surfactant having an HLB value of 8.0 or less to the dispersant of the above-mentioned ultraviolet scattering agent particles may be less than 1.0, 0.9 or less, 0.8 or less, 0.7 or less, 0.6 or less, 0.5 or less, 0.4 or less, 0.3 or less, 0.2 or less, 0.1 or less, 0.09 or less, 0.08 or less, 0.07 or less, or 0.06 or less, or may be 0.01 or more, 0.02 or more, 0.03 or more, 0.04 or more, 0.05 or more, 0.06 or more, 0.07 or more, 0.08 or more, 0.09 or more, 0.1 or more, or 0.15 or more.
  • composition of the present invention is a water-in-oil emulsion cosmetic composition and therefore contains water.
  • the water used in the composition of the present invention is not particularly limited, and may be, for example, water used in cosmetics and quasi-drugs. Specifically, for example, ion-exchanged water, distilled water, ultrapure water, and tap water can be used.
  • the water content is not particularly limited and may be, for example, 1.0% by mass or more, 5.0% by mass or more, or 10% by mass or more, and may be less than 30% by mass, 25% by mass or less, 20% by mass or less, or 10% by mass or less, based on the entire composition.
  • composition of the present invention may further contain other components as long as the effect of the present invention is not impaired.
  • Other components include, but are not limited to, aqueous components other than water, other surfactants, thickeners, other powders, etc. Below, other components are described as examples, but the present invention is not limited to these components.
  • aqueous components other than water examples include, but are not limited to, monohydric alcohols such as ethanol, polyhydric alcohols such as butylene glycol, dipropylene glycol, propanediol, pentylene glycol, hexanediol, and glycerin, polyalkylene glycols such as polyethylene glycol and polypropylene glycol, copolymers thereof, inorganic salts such as sodium chloride and magnesium chloride, or mixtures thereof.
  • monohydric alcohols such as ethanol
  • polyhydric alcohols such as butylene glycol, dipropylene glycol, propanediol, pentylene glycol, hexanediol, and glycerin
  • polyalkylene glycols such as polyethylene glycol and polypropylene glycol
  • copolymers thereof inorganic salts such as sodium chloride and magnesium chloride, or mixtures thereof.
  • composition of the present invention contains aqueous components other than water
  • these aqueous components other than water may be present mainly in the aqueous phase.
  • the other surfactant refers to a surfactant other than the silicone-based surfactant having an HLB value of 8.0 or less as described above.
  • Specific examples of the other surfactant include, but are not limited to, nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.
  • the thickener may be a hydrophilic thickener, a lipophilic thickener, or a mixture thereof.
  • Hydrophilic thickeners include, but are not limited to, water-soluble or water-dispersible thickening polymers.
  • Lipophilic thickeners include, but are not limited to, organophilic modified clays such as disteardimonium hectorite.
  • powders examples include, but are not limited to, luster color pigments such as red iron oxide, yellow iron oxide, black iron oxide, titanium mica, iron oxide-coated titanium mica, and titanium oxide-coated glass flakes; inorganic powders and usability-adjusting powders such as mica, talc, kaolin, sericite, zinc oxide, and silica; and organic powders such as polyethylene powder, nylon powder, cross-linked polystyrene, cellulose powder, and silicone powder.
  • luster color pigments such as red iron oxide, yellow iron oxide, black iron oxide, titanium mica, iron oxide-coated titanium mica, and titanium oxide-coated glass flakes
  • inorganic powders and usability-adjusting powders such as mica, talc, kaolin, sericite, zinc oxide, and silica
  • organic powders such as polyethylene powder, nylon powder, cross-linked polystyrene, cellulose powder, and silicone powder.
  • the composition of the present invention can be produced by a conventional method for water-in-oil emulsion cosmetics, and the emulsification method is not particularly limited.
  • the aqueous phase and the oil phase are heated as necessary, the aqueous phase is gradually added to the oil phase, and emulsified in an emulsifier, and if heated, the composition is allowed to cool to room temperature.
  • the heating step is not required, and the process can be simplified.
  • a dispersing device may be used to disperse the UV scattering agent particles in the oil-based medium.
  • examples of dispersing devices include media-type dispersing devices such as bead mills, sand mills, ball mills, and paint shakers, high-speed agitators such as homogenizers and dispersers, and media-less dispersing devices such as high-pressure dispersers and ultrasonic dispersers.
  • media-type dispersing devices such as bead mills, sand mills, ball mills, and paint shakers
  • high-speed agitators such as homogenizers and dispersers
  • media-less dispersing devices such as high-pressure dispersers and ultrasonic dispersers.
  • There are horizontal and vertical types of bead mills and either can be used.
  • a dispersion composition with good storage stability can be obtained when the temperature of the dispersion during dispersion is low.
  • dispersion may be performed so that the temperature of the dispersion is 10°C to 40
  • composition of the present invention can be widely applied to various types of cosmetics, and can be suitably used, for example, as a cosmetic or a raw material thereof.
  • the composition of the present invention may be a sunscreen cosmetic composition.
  • Examples 1 to 11 and Comparative Examples 1 to 8 Water-in-oil emulsion cosmetic compositions of Examples 1 to 11 and Comparative Examples 1 to 8 were prepared based on the formulations shown in Tables 1 to 4 below. Each of the obtained water-in-oil emulsion cosmetic compositions was evaluated for "skin compatibility after application,”"emulsionstability,””cakingresistance,” and “usability” according to the following criteria, and the results are shown in Tables 1 to 4. For ease of comparison, some Examples may be shown multiple times in Tables 1 to 4.
  • composition 25 mL was filled into a 50 mL cylindrical glass screw tube, and rotated in an inverted state in a direction along the side of the screw tube for 4 hours at a rotation speed of 45 rpm.
  • the composition was then diluted with an appropriate solvent, and the emulsion particles were observed under an optical microscope.
  • A No change in emulsion particles
  • B Enlargement of emulsion particles can be confirmed, but no obvious separation has occurred.
  • C The emulsion particles are enlarged, and from the appearance, separation is evident.
  • each sample was filled into a 50 ml glass screw tube and allowed to stand at room temperature for 24 hours. After 24 hours, each sample container was repeatedly inverted, and the state of the powder that had settled to the bottom of the container was evaluated according to the following evaluation criteria: "A”: When no residue was found at the bottom of the container after it was inverted once, and no powder had settled, "B”: When powder residue is found at the bottom of the container after one inversion, and the residue disappears after one to ten inversions. "C”: When powder residue is found at the bottom of the container after one inversion, and the residue disappears after 11 to 30 inversions. "D”: Powder residue was found at the bottom of the container after one inversion, and the residue did not disappear even after 50 inversions.
  • compositions of Examples 1 to 4 all had good caking resistance of the UV scattering agent particles, excellent emulsion stability and ease of use, and also excellent compatibility with the skin after application.
  • compositions of Comparative Examples 1 and 2 were ineffective in terms of compatibility with the skin after application. This is thought to be because the compositions of Comparative Examples 1 and 2 did not use polyhydroxystearic acid or polyglyceryl-6 polyricinoleate as a dispersant for the UV scattering agent particles.
  • compositions of Examples 1, 5, and 6 all had good caking resistance of the UV scattering agent particles, and were also excellent in emulsion stability and usability, as well as excellent compatibility with the skin after application.
  • composition of Comparative Example 4 was ineffective in terms of skin compatibility after application. This is thought to be because in the composition of Comparative Example 4, the amount of non-polar silicone oil per 100 parts by mass of the total oil medium was less than 55 parts by mass.
  • compositions of Comparative Examples 5 and 6 had poor caking resistance. This is believed to be because in the compositions of Comparative Examples 5 and 6, the content ratio of the silicone surfactant to the dispersant for the UV scattering agent particles was 1.0 or more.
  • compositions of Comparative Examples 5 and 6 were inferior in usability. This is believed to be because the content of silicone-based surfactants with HLB values of 8.0 or less in the compositions of Comparative Examples 5 and 6 exceeded 3.0% by mass.
  • compositions of Examples 1 and 7 to 10 all had good caking resistance of the UV scattering agent particles, excellent emulsion stability and ease of use, and also excellent compatibility with the skin after application.
  • Comparative Example 7 had poor emulsion stability (rolling). This is thought to be because the composition of Comparative Example 7 did not contain a silicone surfactant with an HLB value of 8.0 or less.
  • composition of Comparative Example 8 was inferior in compatibility with the skin after application. This is thought to be because in the composition of Comparative Example 8, the content ratio of the ultraviolet scattering agent particles to the dispersant for the ultraviolet scattering agent particles was more than 10.0.
  • the composition of Example 1 showed a significant increase in absorbance, particularly in the UVB range (approximately 280 nm), 20 minutes after application compared to immediately after application, and a significant decrease in absorbance, particularly in the visible light range (approximately 400 nm). This suggests that the composition of Example 1 has the effect of blending well with the skin after application.
  • Example 12 In the same manner as above, a water-in-oil emulsion cosmetic composition of Example 12 was prepared and evaluated based on the formulation in Table 5. The evaluation results are shown in Table 5.

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Abstract

L'invention concerne une composition cosmétique en émulsion de type eau dans huile qui présente une excellente résistance à l'agglomération de particules d'agent de diffusion d'ultraviolets, présente une excellente stabilité d'émulsion et une excellente facilité d'utilisation, et une fois appliquée, pénètre bien la peau.　La composition cosmétique en émulsion de type eau dans huile contient un milieu huileux, des particules d'agent de diffusion d'ultraviolets dispersées dans le milieu huileux, un dispersant des particules d'agent de diffusion d'ultraviolets, un tensioactif à base de silicone ayant une valeur HLB de 8,0 ou moins, et de l'eau, et satisfait toutes les conditions (I) à (V) suivantes.　Condition (I) Le milieu huileux contient une huile polaire et/ou une huile de silicone polaire, et une huile de silicone non polaire, ou contient une huile polaire et/ou une huile de silicone polaire, une huile hydrocarbonée et une huile de silicone non polaire. Au moins une partie du milieu huileux est un composant volatil. Condition (II) L'huile de silicone non polaire est de 55 parties en masse ou plus par rapport à 100 parties en masse du milieu huileux total. Condition (III) Le dispersant contient de l'acide polyhydroxystéarique et/ou du polyricinoléate de polyglycéryle, et le rapport de teneur des particules d'agent de diffusion d'ultraviolets au dispersant est de 10,0 ou moins. Condition (IV) La teneur en tensioactif à base de silicone est inférieure ou égale à 3,0 % en masse. Condition (V) Le rapport de teneur du tensioactif à base de silicone au dispersant est inférieur à 1,0.
PCT/JP2024/031004 2023-09-12 2024-08-29 Composition cosmétique en émulsion de type eau dans huile Pending WO2025057755A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014172837A (ja) * 2013-03-07 2014-09-22 Dhc Co 油中水型乳化化粧料
JP2015124203A (ja) * 2013-12-27 2015-07-06 花王株式会社 油中水型乳化化粧料
JP2020007379A (ja) * 2016-03-02 2020-01-16 株式会社ファンケル 油中水型乳化化粧料
JP2020105109A (ja) * 2018-12-27 2020-07-09 株式会社マツモト交商 油中水型日焼け止め化粧料
JP2021102608A (ja) * 2019-12-25 2021-07-15 花王株式会社 油中水型乳化日焼け止め化粧料
WO2022153928A1 (fr) * 2021-01-12 2022-07-21 株式会社 資生堂 Composition de dispersion de poudre, et produit cosmétique mettant en œuvre celle-ci
JP2023514929A (ja) * 2019-12-20 2023-04-12 エルブイエムエイチ レシェルシェ 油中水型乳化化粧料組成物

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014172837A (ja) * 2013-03-07 2014-09-22 Dhc Co 油中水型乳化化粧料
JP2015124203A (ja) * 2013-12-27 2015-07-06 花王株式会社 油中水型乳化化粧料
JP2020007379A (ja) * 2016-03-02 2020-01-16 株式会社ファンケル 油中水型乳化化粧料
JP2020105109A (ja) * 2018-12-27 2020-07-09 株式会社マツモト交商 油中水型日焼け止め化粧料
JP2023514929A (ja) * 2019-12-20 2023-04-12 エルブイエムエイチ レシェルシェ 油中水型乳化化粧料組成物
JP2021102608A (ja) * 2019-12-25 2021-07-15 花王株式会社 油中水型乳化日焼け止め化粧料
WO2022153928A1 (fr) * 2021-01-12 2022-07-21 株式会社 資生堂 Composition de dispersion de poudre, et produit cosmétique mettant en œuvre celle-ci

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