WO2024135289A1 - Detergent preparation - Google Patents

Abstract

The present invention provides a detergent preparation which can clean a skin and simultaneously causes a powder to adhere thereto, thereby having a foundation makeup effect on the cleaned skin. This detergent preparation comprises (A) a hydrophobized powder, (B) a polyhydric alcohol, (C) an anionic or nonionic surfactant, and (D) water. The content of the (A) component is 0.3 mass% or higher with respect to the whole mass of the detergent preparation.

Description

Cleansing agent

The present invention relates to a cleansing agent. More specifically, it relates to a cleansing agent that has excellent cleansing power and allows makeup to be applied to the skin after cleaning.

Cleansing agents used for washing the face, etc., are generally required to have strong cleansing power. The purpose of such cleansing is to remove oils and dirt from the skin, and it is thought that an ideal cleanser would leave the skin free of any residue after washing.

On the other hand, when applying makeup to the face, the general rule is to wash the skin with a cleanser before applying makeup, then apply a base of skincare products, and then apply makeup. This can take a long time to complete the makeup application. Also, even if you try to simply improve the appearance of your skin without makeup, the steps of cleansing and base makeup are required, making the process tedious.

From this perspective, there has been a demand for cleansers or cosmetics that make cleaning and applying base makeup easier.

U.S. Patent Application Publication No. 2005/0220737A1

In consideration of the above problems, the present invention provides a cosmetic product with a base makeup effect, or a base makeup product with a cleansing effect, which can perform both cleansing and base makeup at the same time.

According to the present invention, the following inventions are provided.
[1]
(A) hydrophobized powder,
(B) a polyhydric alcohol,
(C) an anionic or nonionic surfactant; and (D) water,
A cleansing agent, the content of component (A) being 0.3 mass% or more based on the total mass of the cleansing agent.
[2]
The cleansing agent according to [1], wherein the component (A) has been treated by a method selected from the group consisting of reactive ultra-thin film coating treatment, silicone treatment, fatty acid treatment, fatty acid ester treatment, lauroyl lysine treatment, surfactant treatment, fatty acid soap treatment, and fluorine treatment.
[3]
The cleansing agent according to [1] or [2], wherein the component (A) is a hydrophobized pigment.
[4]
The cleansing agent according to any one of [1] to [3], wherein the component (B) is selected from the group consisting of dipropylene glycol, butylene glycol, propanediol, and glycerin.
[5]
The cleansing agent according to any one of [1] to [4], wherein the component (C) is selected from the group consisting of polyoxyalkylene fatty acid esters, polyglycerin fatty acid esters, and polyoxyalkylene hydrogenated castor oils.
[6]
The cleansing agent according to any one of [1] to [5], wherein the content of component (A) based on the total mass of the cleansing agent is 0.5 to 10 mass%.
[7]
The cleansing agent according to any one of [1] to [6], wherein the content of the component (B) based on the total mass of the cleansing agent is 7 to 35 mass%.
[8]
The cleansing agent according to any one of [1] to [7], wherein the content of component (C) based on the total mass of the cleansing agent is 0.1 to 10 mass%.
[9]
(E) The cleansing agent according to any one of [1] to [8], further comprising a water-soluble thickener.
[10]
The cleansing agent according to [9], wherein the content of the component (E) based on the total mass of the cleansing agent is 0.1 to 5 mass%.
[11]
The cleansing agent according to any one of [1] to [10], wherein the ratio B/A of the content of the component (B) to the content of the component (A) is 2 to 10.
[12]
The cleansing agent according to any one of [1] to [11], further comprising an oil.
[13]
The cleansing agent according to any one of [1] to [12], which is an opaque liquid composition.

The present invention provides a cleansing agent that can deposit powder onto the skin while cleansing, providing a base makeup effect on the skin after cleansing.

Description of the Invention

[Cleaning agent]
The cleansing agent according to the present invention comprises:
(A) hydrophobized powder,
(B) a polyhydric alcohol,
The cleansing agent according to the present invention comprises, as essential components, (C) an anionic or nonionic surfactant, and (D) water. Each component contained in the cleansing agent according to the present invention will be described below.

[(A) Hydrophobized powder]
The cleansing agent according to the present invention comprises a hydrophobized powder (hereinafter, sometimes referred to as component (A)). This powder remains on the skin after cleansing to form a makeup base. The powder that is the raw material for component (A) can be selected from any of those used in makeup bases, for example:
extender pigments such as talc, sericite, mica, kaolin, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcium phosphate, fluorapatite, hydroxyapatite, metal soap, boron nitride, nylon powder, polyethylene powder, cellulose powder, silicone powder, and zinc oxide;
Colorants such as carbon black, titanium oxide, zinc oxide, ultramarine, Prussian blue, chromium oxide, organic tar-based dyes, and lakes;
Examples of the pigment include, but are not limited to, composite pigments such as titanium dioxide and iron oxide coated mica.

Component (A) according to the present invention is a powder as described above that has been subjected to a hydrophobic treatment. Specific hydrophobic treatments include, for example, reactive ultra-thin film coating treatment, silicone treatment, fatty acid treatment, fatty acid ester treatment, lauroyl lysine treatment, surfactant treatment, fatty acid soap treatment, fluorine treatment, etc., and preferably reactive ultra-thin film coating treatment, silicone treatment, fatty acid treatment, fatty acid ester treatment, fatty acid soap treatment, fluorine treatment, etc., more preferably reactive ultra-thin film coating treatment and silicone treatment, and even more preferably reactive ultra-thin film coating treatment.

An example of a reactive ultra-thin film coating treatment is a process in which 1,3,5,7-tetramethylcyclotetrasiloxane is crosslinked in a vapor phase by utilizing the catalytic active sites on the pigment surface, and then a long-chain 1-alkene is added to the surface of the resulting thin film to make it hydrophobic (Journal of the Japanese Society of Cosmetic Engineers, Vol. 27, No. 1, pp. 1-20, 1993). Examples of long-chain 1-alkene include _C8 - _C30 alk-1-enes, preferably _C10 - _C25 alk-1-enes, and more preferably _C12 - _C20 alk-1-enes.

The silicone treatment is carried out by treatment with, for example, silicone oils such as methylhydrogenpolysiloxane, dimethylpolysiloxane, and methylphenylpolysiloxane; C ₁ -C 30 alkylsilanes such as methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, decyltrimethoxysilane, dodecyltrimethoxysilane, myristyltrimethoxysilane, cetyltrimethoxysilane, and stearyltrimethoxysilane; and C ₁ -C ₃₀ fluoroalkylsilanes such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane. Preferred alkylsilanes include C ₈ -C ₃₀ alkylsilanes, more preferably C ₁₂ -C ₃₀ alkylsilanes, and even more preferably C _{14 -C 30 alkylsilanes} . Preferred fluoroalkyl silanes include C ₈ -C ₃₀ fluoroalkyl silanes, more preferably C ₁₂ -C ₃₀ fluoroalkyl silanes, and even more preferably C ₁₄ -C ₃₀ fluoroalkyl silanes.

Fatty acid treatment is carried out by treating with, for example, palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, rosin acid, 12-hydroxystearic acid, etc. Fatty acid soap treatment is carried out by treating with, for example, aluminum stearate, calcium stearate, 12-hydroxystearic acid, etc. Fatty acid ester treatment is carried out by treating with, for example, dextrin fatty acid ester, cholesterol fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, etc.

Lauroyl lysine treatment is carried out by treating the powder with a gemini amphiphilic amino acid (e.g. sodium dilauroyl glutamate lysine) in which two molecules of N-lauroyl-L-glutamic acid are bonded to one molecule of lysine. This treatment can be carried out either dry or wet, but wet treatment is preferred as it ensures that the surface of the powder is evenly coated.

These hydrophobic treatments can be carried out according to conventional methods, such as a wet method using a solvent, a gas phase method, or a mechanochemical method.

　Commercially available products can also be used as hydrophobic pigments. For example, commercially available hydrophobic zinc oxide, hydrophobic yellow iron oxide, hydrophobic black iron oxide, hydrophobic red iron oxide, hydrophobic pigment-grade titanium oxide, etc. can be used.

The average mass particle size of the hydrophobized pigment is, for example, 10 nm to 1 μm, preferably 20 nm to 700 nm, and more preferably 100 nm to 500 nm.

In the present invention, component (A) is the main component that provides the base effect, so it is preferably a hydrophobically treated pigment in order to impart color to the appearance of the skin.

In the present invention, in order to achieve a base makeup effect after cleansing, the content of component (A) based on the total mass of the cleanser must be 0.3% by mass or more. The higher the content, the more pronounced the base makeup effect, but even if the content is too high, the amount adsorbed onto the skin tends to saturate. From this perspective, the content of component (A) based on the total mass of the cleanser is preferably 0.5 to 10% by mass, and more preferably 1 to 8% by mass.

[(B) Polyhydric alcohol]
The cleansing agent according to the present invention further contains a polyhydric alcohol (hereinafter, sometimes referred to as component (B)). Component (B) is generally capable of imparting a moisturizing effect to the cleansing agent. In the present invention, in addition to the moisturizing effect, the component (B) also exhibits an effect of improving the stability of the cleansing agent.

The polyhydric alcohol can be selected from those that can be generally used in cleansing agents.
Dihydric alcohols (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.);
Trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.);
Tetrahydric alcohols (e.g., pentaerythritol, such as 1,2,6-hexanetriol, etc.);
Pentahydric alcohols (e.g., xylitol, etc.);
Hexahydric alcohols (e.g., sorbitol, mannitol, etc.); and polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, polyglycerin, etc.).
In addition, polyhydric alcohol alkyl ethers, polyhydric alcohol ether esters, sugar alcohols, etc. can also be used. Among these, dipropylene glycol, butylene glycol, propanediol, and glycerin are preferred. Furthermore, these polyhydric alcohols can be used in combination of two or more kinds.

The content of component (B) in the cleanser according to the present invention is not particularly limited, but is preferably 7 to 35% by mass, and more preferably 10 to 30% by mass, based on the total mass of the cleanser. By keeping the polyhydric alcohol within this range, the stability of the cleanser is improved and a high moisturizing effect can also be achieved.

Furthermore, in the cleansing agent of the present invention, the powder adhesion effect tends to be affected by the blending ratio of component (A) to component (B). For this reason, it is preferable that the ratio B/A of the content of component (B) to the content of component (A) in the cleansing agent of the present invention is 2 to 10.

[(C) Surfactant]
The cleansing agent according to the present invention contains an anionic or nonionic surfactant (hereinafter, sometimes referred to as component (C)). Component (C) is mainly responsible for the cleansing effect of the cleansing agent according to the present invention. Component (C) can be arbitrarily selected from those used in the fields of cosmetics and medical products, but nonionic surfactants are preferred, and those selected from the group consisting of polyoxyalkylene fatty acid esters, polyglycerin fatty acid esters, and polyoxyalkylene hydrogenated castor oils are more preferred.

More specific examples of surfactants that can be used in the present invention include:
(a) Anionic surfactants include, for example, cationic surfactants such as sodium cocoyl methyl taurate, stearyl trimethyl ammonium chloride, benzalkonium chloride, and laurylamine oxide; sodium palmitate, sodium laurate, sodium lauryl sulfate, potassium laurate, polyoxyethylene alkyl triethanolamine sulfate, turpentine oil, linear dodecylbenzene sulfate, polyoxyethylene hydrogenated castor oil maleic acid, coconut fatty acid arginine, and acyl methyl taurine salts; (b) Nonionic surfactants include, for example, polyoxyethylene hydrogenated hydrogenated castor oil, polyethylene glycol diisostearate, and monoisostearyl Examples of the fatty acid esters that can be used include polyethylene glycol phosphate, polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl triisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan sesquioleate, sorbitan trioleate, polyoxyethylene sorbitan monolaurate, polyethylene glycol monooleate, polyoxyethylene alkyl ethers, polyglycol diesters, lauroyl diethanol amide, fatty acid isopropanol amide, maltitol hydroxy aliphatic ethers, alkylated polysaccharides, alkyl glucosides, sugar esters, and polyoxyethylene-methylpolysiloxane copolymers.

In addition, higher fatty acid soaps, which are commonly used as cleansing agents, cannot be used because the powder does not adhere well to the skin.

The content of component (C) in the cleanser according to the present invention is not particularly limited, but it is preferable that the content of component (C) based on the total mass of the cleanser is 0.1 to 10 mass%, and more preferably 0.5 to 3 mass%.

(D) Water The cleansing agent according to the present invention further contains water in addition to the above-mentioned components. As the water, water used in cosmetics, quasi-drugs, etc., can be used, such as purified water, ion-exchanged water, tap water, etc.

[(E) Water-soluble thickener]
The cleansing agent of the present invention essentially contains the above-mentioned components (A) to (D), and may further contain a water-soluble thickener (hereinafter, sometimes referred to as component (E)). In the present invention, component (E) is thought to aid adhesion of the powder to the skin and also to have the effect of improving the stability of the cleansing agent.

Water-soluble thickeners can be selected from those used in the fields of cosmetics and pharmaceuticals. Specific examples include succinoglycan, xanthan gum, carrageenan, gellan gum, starch, hydroxyalkyl cellulose, pullulan, carbomer, silicic acid (Na/Mg), bentonite, acrylamide copolymers, sodium acroyldimethyltaurate/hydroxyethyl acrylate copolymers, agar, polyurethane, and hydrophobic polyether urethane.

When the cleanser according to the present invention contains component (E), its content is not particularly limited, but it is preferable that the content of component (E) based on the total mass of the cleanser is 0.1 to 5 mass%, and more preferably 0.2 to 3 mass%.

[Other ingredients]
In addition to the above-mentioned components, the composition of the present invention may contain other optional components within the scope of not impairing the effects of the present invention. Such optional components include components that are generally incorporated into cleaning agents, such as oils, medicines, lubricating agents, gelling agents, antioxidants, ultraviolet absorbing agents, colorants, fragrances, and protein derivatives.

The oil can be selected from those commonly used in cleansing agents and the like. For example, liquid paraffin, squalane and other hydrocarbon oils, 2-ethylhexanoate cetyl, glyceryl tri(2-ethylhexanoate) and other synthetic ester oils, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane and other silicone oils, jojoba oil, macadamia nut oil, olive oil, safflower oil and other vegetable oils can be used. Of these, liquid paraffin, 2-ethylhexanoate cetyl, and 2-ethylhexanoate glyceryl tri(2-ethylhexanoate) are particularly preferred.

Medications that can be blended include those commonly used in cosmetics, such as vitamin C, vitamin E, amino acids, herbal medicines, anti-inflammatory agents, and disinfectants.

The formulation of the cleanser according to the present invention is not limited, but is preferably a liquid composition that can be easily used as a cleanser. In addition, the cleanser according to the present invention is generally opaque because it contains a powder that serves as a makeup base, and is typically an opaque liquid composition.

The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Contents are expressed as mass % of the total amount unless otherwise specified.

[Examples 1 to 7 and Comparative Examples 1 to 4]
The cleansing agents of Examples 1 to 7 and Comparative Examples 1 to 4 were prepared according to the formulations shown in Table 1.

[evaluation]
The cleansing agents of the Examples and Comparative Examples were evaluated for their powder adsorption to the skin, skin tone-up effect, makeup removal effect, and cleansing properties by the following methods. The evaluation results are shown in Table 1.

[Skin Adsorption of Powder]
1 g of each sample was dispensed and spread on the skin, then washed off with water, and the amount of powder remaining on the skin was evaluated by sensory evaluation according to the following criteria.
A: Powder remains on the skin B: Almost no powder remains on the skin C: No powder remains on the skin

[Tone-up effect]
1 g of each sample was dispensed and spread on the skin, then rinsed off with water, and the skin brightness was evaluated by sensory evaluation according to the following criteria.
A: Skin brightness has increased significantly. B: Skin brightness has increased. C: No difference before and after use.

[Makeup effect]
1 g of each sample was dispensed and spread on the skin, then washed off with water, and the presence or absence of makeup effect was evaluated by sensory evaluation according to the following criteria.
A: Has a makeup effect. B: Has a primer effect and some makeup effect. C: Has a primer effect.

[Cleaning ability]
After applying the artificial sebum to the skin of the arm at a specific density, 1 g of each sample was dispensed and spread over the skin, and then washed off with water. After washing off, the condition was evaluated by sensory evaluation using the following 6-level scale (0 to 5).
0: Poor dirt removal 1: Slightly poor dirt removal 2: Slightly poor dirt removal 3: Standard 4: Good dirt removal 5: Very good dirt removal

Claims (13)

(A) hydrophobized powder,
(B) a polyhydric alcohol,
(C) an anionic or nonionic surfactant; and (D) water,
A cleansing agent, the content of component (A) being 0.3 mass% or more based on the total mass of the cleansing agent. The cleansing agent according to claim 1, wherein component (A) has been treated by a method selected from the group consisting of reactive ultra-thin film coating treatment, silicone treatment, fatty acid treatment, fatty acid ester treatment, lauroyl lysine treatment, surfactant treatment, fatty acid soap treatment, and fluorine treatment. The cleansing agent according to claim 1 or 2, in which component (A) is a hydrophobically treated pigment. The cleansing agent according to claim 1 or 2, wherein component (B) is selected from the group consisting of dipropylene glycol, butylene glycol, propanediol, and glycerin. The cleansing agent according to claim 1 or 2, wherein component (C) is selected from the group consisting of polyoxyalkylene fatty acid esters, polyglycerin fatty acid esters, and polyoxyalkylene hydrogenated castor oil. The cleansing agent according to claim 1 or 2, in which the content of component (A) is 0.5 to 10 mass % based on the total mass of the cleansing agent. The cleansing agent according to claim 1 or 2, in which the content of component (B) based on the total mass of the cleansing agent is 7 to 35 mass %. The cleansing agent according to claim 1 or 2, in which the content of component (C) based on the total mass of the cleansing agent is 0.1 to 10 mass%. The cleansing agent according to claim 1 or 2, further comprising (E) a water-soluble thickener. The cleaning agent according to claim 9, wherein the content of component (E) is 0.1 to 5 mass % based on the total mass of the cleaning agent. The cleansing agent according to claim 1 or 2, in which the ratio B/A of the content of component (B) to the content of component (A) is 2 to 10. The cleaning agent according to claim 1 or 2, further comprising an oil. 3. The cleansing agent according to claim 1, which is an opaque liquid composition.