WO2023162812A1 - Oil-in-water type cosmetic - Google Patents

Abstract

The present invention provides an oil-in-water emulsified solid cosmetic having excellent usability and finish, and suppressing secondary adhesion. This oil-in-water type cosmetic comprises (A) a (meth)acrylic acid/alkyl (meth)acrylate/(meth)acrylic acid POE monoalkyl ether ester copolymer, (B) polyvinyl acetate, (C) an oil, and (D) water.

Description

Oil-in-water cosmetics

The present invention relates to oil-in-water cosmetics. More specifically, the present invention relates to an oil-in-water type cosmetic that has freshness and moisturizing effect and less secondary adhesion.

  Oil-in-water cosmetics are preferred because the first phase that comes into contact with the skin when applied to the skin is the aqueous phase, which gives a fresh feel to the skin. Various attempts have been made to further improve the properties of the oil-in-water type cosmetics and make them more attractive.

Cosmetics are generally required not only to be aesthetically pleasing when used, but also to be long-lasting and comfortable to use. In addition, suppression of secondary adhesion is also required.

After applying cosmetics such as foundation to the skin, it may be transferred to clothing that comes into contact with the applied area. Such a phenomenon is called secondary adhesion. When secondary adhesion occurs, clothes and the like are stained, while the cosmetics applied to the skin are removed, so that the makeup lasts longer. cause it to get worse. Therefore, it is desired to suppress secondary adhesion as much as possible. Furthermore, in recent years, there have been more opportunities to wear masks for disease prevention and allergy countermeasures, and the need for secondary adhesion suppression is increasing.

As described above, there is a demand for the development of oil-in-water cosmetics that are excellent in finish after use, long-lasting makeup, and good feeling in use, and that have little secondary adhesion.

According to the present invention, the following inventions are provided.
[1] (A) (meth)acrylic acid/(meth)alkyl acrylate/(meth)acrylic acid POE monoalkyl ether ester copolymer,
(B) polyvinyl acetate,
An oil-in-water cosmetic containing (C) oil and (D) water.
[2] Component (A) is acrylates/steareth-20 methacrylate copolymer, acrylates/beheneth-25 methacrylate copolymer, acrylates/steareth-20 methacrylate crosspolymer, and ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymer. Selected cosmetics according to [1]-.
[3] The content of component (A) is 0.003 to 3% by mass, and the content of component (B) is 0.003 to 20% by mass, relative to the total mass of the cosmetic. 1] or cosmetics as described in [2].
[4] The cosmetic according to any one of [1] to [3], wherein the ratio of the content of component (B) to the content of component (A) is 0.1-100.
[5] The cosmetic according to any one of [1] to [4], further comprising (E) polyvinyl alcohol.
[6] The cosmetic according to [5], wherein the content of component (E) is 0.001 to 2% by mass with respect to the total mass of the cosmetic.
[7] The cosmetic according to any one of [1] to [6], further comprising (F) a hydrophobic treatment colorant.
[8] The cosmetic according to [7], wherein the component (F) is blended in the oil phase [9] The content of the component (F) is 3 to 50% by mass with respect to the total mass of the cosmetic. , [7] or the cosmetic according to [8].
[10] The cosmetic according to any one of [1] to [9], which is a foundation.

According to the present invention, there is provided an oil-in-water cosmetic that is excellent in finish after use, long-lasting makeup, good feeling in use, and less secondary adhesion. Secondary adhesion is suppressed to a particularly high level in this cosmetic material, so even if the cosmetic material contains a large amount of powder or coloring material, secondary adhesion hardly causes stains on clothes or masks.

Hereinafter, embodiments of the present invention will be described in detail.

The oil-in-water emulsified solid cosmetic (hereinafter sometimes simply referred to as cosmetic) according to the present invention is
(A) a specific acrylic acid copolymer,
(B) polyvinyl acetate,
It contains (C) oil and (D) water as essential components.

[Specific acrylic acid copolymer]
The cosmetic according to the present invention contains a (meth)acrylic acid/(meth)alkyl (meth)acrylate/(meth)acrylic acid POE monoalkyl ether ester copolymer as the component (A). Hereinafter, this component may be simply referred to as component (A) or acrylic acid copolymer.

The (meth)acrylic acid/(meth)alkyl (meth)acrylate/(meth)acrylic acid POE monoalkyl ether ester copolymer used in the cosmetic according to the present invention is
(a1) acrylic acid or methacrylic acid,
(a2) alkyl acrylates or alkyl methacrylates, and (a3) esters of acrylic acid or methacrylic acid with polyoxyethylene alkyl ethers,
is a copolymer of

These are, for example, listed in ICID (International Cosmetic Ingredient Dictionary),
Acrylates/Ceteth-20 methacrylate copolymer,
acrylates/steareth-20 methacrylate copolymer,
acrylates/steareth-25 methacrylate copolymer,
acrylates/steareth-50 methacrylate copolymer,
acrylates/beheneth-25 methacrylate copolymer,
acrylates/steareth-20 methacrylate crosspolymer,
Ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymer, etc., are commercially available as aqueous dispersions (polymer emulsions) thereof.

As the component (A) in the cosmetic according to the present invention,
Acrylates/Steareth-20 methacrylate copolymer (Aculin 22 (trade name); Dow Chemical Japan Co., Ltd.),
Acrylates/Beheneth-25 methacrylate copolymer (Aculin 28 (trade name); Dow Chemical Japan Co., Ltd.),
Acrylates/Steareth-20 methacrylate crosspolymer (Aculin 88 (trade name); Dow Chemical Japan Co., Ltd.), and
Acryloyldimethyltaurate ammonium/beheneth-25 methacrylate crosspolymer (Aristoflex HMB (trade name); manufactured by Clariant Productions UK Ltd.)
is preferably selected from the group consisting of Among them, acrylates/steareth-20 methacrylate copolymer or acrylates/beheneth-25 methacrylate copolymer is particularly preferred.

The aqueous dispersion of the acrylic acid copolymer described above is diluted with water, etc., if necessary, and added with an alkaline agent for neutralization to increase its viscosity. The alkaline agent used for neutralizing the aqueous dispersion is not particularly limited, and inorganic bases such as sodium hydroxide and potassium hydroxide, and organic bases such as triethanolamine, isopropanolamine, and basic amino acids can be used.

It is known that such an acrylic acid copolymer can be used as a thickening agent in cosmetics and the like. However, among commonly known thickeners, the use of this particular acrylic acid copolymer specifically improves the usability and finish when applying cosmetics, and also has the effect of suppressing secondary adhesion. also higher. Furthermore, if a thickener other than this is used, the viscosity of the cosmetic composition will increase too much, resulting in poor usability and difficulty in transferring the liquid during production.

The amount of component (A) blended in the cosmetic of the present invention is preferably 0.003 to 3% by mass, more preferably 0.01 to 1% by mass, as the actual polymer content, relative to the total mass of the cosmetic. is more preferable, and 0.02 to 0.5% by mass is even more preferable. If the blending amount of component (A) is too small, it may not be possible to obtain a sufficient feeling of use or the effect of suppressing secondary adhesion. is necessary.

[Polyvinyl acetate]
Polyvinyl acetate (hereinafter sometimes referred to as component (B)) that can be used in the oil-in-water cosmetic of the present invention is a polymer containing repeating units derived from vinyl acetate. Such polyvinyl acetate is used in various fields such as cosmetics, pharmaceuticals, and foods. Any of them can be selected and used.

Polyvinyl acetate is typically a homopolymer consisting of only vinyl acetate units. However, in the present invention, copolymers containing other repeating units can also be used as long as the effects of the present invention are not impaired. For example, a copolymer containing a repeating unit derived from vinyl alcohol as a repeating unit is excellent in hydrophilicity and thus can improve the dispersibility of the polymer. However, the effect obtained by the present invention is considered to be brought about by vinyl acetate units, and the content of repeating units other than vinyl acetate units is preferably 20 mol % or less based on the entire polymer.

Polyvinyl acetate, which has many different degrees of polymerization, can generally be used in cosmetics and has sufficient solubility or dispersibility when blended in oil-in-water cosmetics. It can be used arbitrarily as long as it exhibits properties and maintains uniform properties. Polyvinyl acetate has relatively low water solubility, but in the present invention, polyvinyl acetate is preferably blended in the water phase of the oil-in-water cosmetic. By blending in the aqueous phase, the effects of the present invention tend to be exhibited more strongly.

Furthermore, the aqueous solution of polyvinyl acetate has a relatively high viscosity. This is because polyvinyl acetate exhibits a thickening effect. In general, the higher the degree of polymerization of the polymer, the higher the viscosity of the aqueous solution. Moreover, when the copolymer contains repeating units other than vinyl acetate, the viscosity may change due to its influence. Here, when polyvinyl acetate (or its copolymer) is blended into a cosmetic, if the viscosity rises excessively, the handleability and the like may deteriorate. For this reason, it is preferable that the polyvinyl acetate has an appropriate viscosity when it is made into an aqueous solution. Specifically, when polyvinyl acetate is made into an aqueous solution having a concentration of 40% by mass, the viscosity at 25° C. is preferably about 10,000 to 30,000.

The amount of component (B) blended in the cosmetic of the present invention is preferably 0.003 to 20% by mass, more preferably 0.01 to 5% by mass, as the actual polymer content, relative to the total mass of the cosmetic. is more preferable, and 0.02 to 3% by mass is even more preferable. If the blending amount of component (B) is too small, it may not be possible to obtain a sufficient feeling of use or the effect of suppressing secondary adhesion. is necessary.

In addition, in the cosmetic composition according to the present invention, suppression of secondary adhesion is believed to be brought about by the interaction between the (A) component and the (B) component, and it is preferable that the ratio of the components is within a specific range. Specifically, the ratio of the content of component (B) to the content of component (A) is preferably 0.1-100, more preferably 0.3-50.

[oil]

The cosmetic according to the present invention contains oil (hereinafter sometimes referred to as (C) component). This oil constitutes a part of the internal phase (oil phase) of the oil-in-water cosmetic. Oils that can be used in the cosmetics according to the present invention are not particularly limited, and include hydrocarbon oils, ester oils, silicone oils, fats and oils, higher alcohols, fragrances, oil-soluble ultraviolet absorbers, etc. that are generally used in cosmetics. can be selected.

Examples of hydrocarbon oils include liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isododecane, isohexadecane, ozokerite, pristane, and vaseline.

Ester oils include pentaerythrityl tetraethylhexanoate, cetyl ethylhexanoate, jojoba oil, di(phytosteryl/octyldodecyl) lauroyl glutamate, triisostearin, glyceryl diisostearate, triethylhexanoin, dimer dilinoleic acid (phytosteryl/behenyl). , dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/isostearyl/cetyl/stearyl/behenyl), isopropyl palmitate, macadamia nut fatty acid phytosteryl, tetra (behenate/benzoate/ethylhexanoate) pentaerythrityl, Ethylhexyl palmitate, myristyl myristate, isopropyl myristate, tripropylene glycol dipivalate, diisopropyl sebacate, isodecyl neopentanoate, octyl octanoate, nonyl nonanoate, cetyl octanoate, octyldodecyl myristate, butyl stearate, hexyl laurate , decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester , N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, tripropylene glycol pivalate, diisostearyl malate, glyceryl di-2-heptylundecanoate, glyceryl diisostearate, trimethylolpropane tri-2-ethylhexanoate. , trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl trioctanoate, glyceryl triisopalmitate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate , glycerin trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2- Octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, succinic acid 2 - Ethylhexyl, triethyl citrate and the like can be exemplified.

Examples of silicone oils include linear polysiloxanes (eg, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.), cyclic polysiloxanes (eg, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexane siloxane, etc.), silicone resins that form a three-dimensional network structure, silicone rubber, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), acrylic silicone and the like.

Liquid oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerin, and turtle oil. , egg yolk oil, sesame oil, persic oil, wheat germ oil, cottonseed oil, perilla oil, tea seed oil, kaya oil, rice bran oil, sinagiri oil, Japanese paulownia oil, jojoba oil, germ oil and the like. Examples of solid fats and oils include cacao butter, coconut oil, horse fat, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, palm kernel oil, lard, beef bone fat, Japanese wax kernel oil, hydrogenated oil. , beef leg tallow, Japanese wax, hydrogenated castor oil and the like.

The higher alcohol is not particularly limited as long as it is a higher alcohol that can be used in the fields of cosmetics, pharmaceuticals, quasi-drugs, etc., preferably an alcohol with 6 or more carbon atoms. The higher alcohols include linear or branched, saturated or unsaturated monohydric alcohols. Linear alcohols include dodecanol (lauryl alcohol), tridodecanol, tetradodecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), Saturated alcohols such as nonadecanol, icosanol (arachyl alcohol), henicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnavir alcohol), pentacosanol, hexacosanol (ceryl alcohol), oleyl alcohol, and cetostearyl alcohol , and unsaturated alcohols such as elaidyl alcohol. Branched chain alcohols include monostearyl glycerin ether (bacyl alcohol), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterols, hexyldodecanol, isostearyl alcohol, octyldodecanol, and the like. These higher alcohols can be used in combination of two or more. From the viewpoint of stability over time, the cosmetic according to the present invention is preferably a saturated linear monohydric alcohol such as docosanol (behenyl alcohol) or octadecanol (stearyl alcohol), and more preferably a combination thereof. Further, it is preferable to use a branched alcohol such as monostearyl glycerin ether (bacyl alcohol) in combination with these saturated linear monohydric alcohols or combinations thereof. Most preferably, a combination of docosanol (behenyl alcohol), octadecanol (stearyl alcohol), and monostearyl glycerin ether (batyl alcohol) is preferred.

Flavors include natural fragrances obtained from animals or plants, synthetic fragrances produced by chemical synthesis means, and compounded fragrances that are mixtures thereof, and are not particularly limited. By blending the fragrance, a cosmetic having a long-lasting fragrance can be obtained.

Examples of oil-soluble ultraviolet absorbers include para-aminobenzoic acid (PABA), PABA monoglycerol ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N , N-dimethyl PABA butyl ester and other benzoic acid UV absorbers; homomenthyl-N-acetylanthranilate and other anthranilic acid UV absorbers; amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl Salicylic acid-based UV absorbers such as salicylate and p-isopropanol phenyl salicylate; octyl cinnamate, ethyl-4-isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2 , 4-diisopropylcinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, octyl-p-methoxycinnamate, 2-ethylhexyl-p-methoxycinnamate, 2 -ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethyl Cinnamic acid-based UV absorbers such as hexanoyl-diparamethoxycinnamate, 3,4,5-trimethoxycinnamate 3-methyl-4-[methylbis(trimethylsiloxy)silyl]butyl; 2-phenyl- 5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-hydroxy-5' -methylphenylbenzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, octocrylene, etc. is exemplified.

The amount of oil to be blended in the cosmetic according to the present invention is not particularly limited, but is generally preferably 5 to 50% by mass, more preferably 10 to 40% by mass, relative to the total mass of the cosmetic. More preferably 15 to 40%.

[water]
The cosmetic according to the present invention contains water (hereinafter sometimes referred to as component (D)). Water that can be used in the present invention is not particularly limited, and includes purified water, ion-exchanged water, and the like. The blending amount of water is generally preferably 25 to 70% by mass, preferably 30 to 60% by mass, particularly preferably 30 to 50% by mass, relative to the total mass of the oil-in-water cosmetic. . If the blending amount of water is outside the above range, the stability of the oil-in-water emulsified cosmetic composition may be deteriorated, or the fresh feel during use may be deteriorated.

[Other ingredients]
The cosmetic composition according to the present invention contains the above-described components (A) to (D) as essential components, but may contain other components as necessary.

One of such components is polyvinyl alcohol (hereinafter sometimes referred to as component (E)). Polyvinyl alcohol has a polymer skeleton derived from acrylic acid similar to that of polyvinyl acetate (component (B)), so it has a good affinity with polyvinyl acetate. expensive. Therefore, when polyvinyl alcohol is combined with polyvinyl acetate, the stability of the cosmetic may be improved. On the other hand, according to the studies of the present inventors, polyvinyl alcohol has a higher effect of increasing the viscosity of an aqueous solution than polyvinyl acetate, and its content is preferably not excessively high. Specifically, the content of component (E) is preferably 20% by mass or less with respect to the total amount of component (B) and component (E).

It should be noted that polyvinyl alcohol is generally produced by hydrolyzing polyvinyl acetate. Therefore, if hydrolysis is incomplete, the resulting polymer will contain vinyl acetate units. The polyvinyl alcohol used in the present invention preferably has a low vinyl acetate unit content. Specifically, the vinyl acetate unit content is preferably 20 mol % or less based on the entire polymer. Moreover, since polyvinyl alcohol has good compatibility with polyvinyl acetate, it is preferably blended in the aqueous phase together with polyvinyl acetate when blended.

When the cosmetic according to the present invention contains component (E), its content is preferably 0.001 to 2% by mass, more preferably 0.002 to 0.5% by mass, relative to the total mass of the cosmetic. is more preferable.

In addition, the cosmetic according to the present invention can contain a hydrophobic treatment colorant (hereinafter sometimes referred to as component (F)). Component (F) is a hydrophobically treated color pigment.

The color pigment can be arbitrarily selected from those commonly used in cosmetics. for example,
Metal oxides such as titanium oxide, iron oxides (yellow iron oxide, black iron oxide, and red iron oxide), zinc oxide, zinc oxide, cerium oxide, aluminum oxide, chromium oxide, chromium hydroxide, manganese violet, green spinel (titanic acid cobalt) and other metal complexes, as well as inorganic pigments such as carbon black;
organic pigments such as tar-based pigments and lake pigments; and natural pigments such as carmine.

The color pigment used can be selected according to the purpose, but it is preferable to use an inorganic pigment that has a large effect of covering the skin as a cosmetic, and it is more preferable to use titanium oxide, iron oxide, or zinc oxide. . These color pigments can also be used in combination of two or more.

Various particle sizes are known for such coloring pigments. The particle size of the color pigment can be selected according to the purpose, but the primary particle size is preferably 0.1 μm or more, more preferably 0.2 μm or more. It should be noted that a fine particle color pigment having a small temporary particle size can also be used depending on the purpose.

In the cosmetics according to the present invention, the coloring pigment used is hydrophobically treated. By subjecting the color pigment to a hydrophobic treatment, it is possible to reduce the squeaky feeling that may occur when the cosmetic is used, improve the usability, and improve the longevity of the makeup after use. Such hydrophobic treatment can be selected from silicone treatment, fluorine treatment, fatty acid treatment, metallic soap treatment, N-acylamino acid treatment, and the like. Of these, silicone treatment, fluorine treatment, and N-acylamino acid treatment are preferred because they provide a sticky feel and a glossy feel during use, as well as a large covering effect.

When the cosmetic according to the present invention contains component (F), its content is preferably 3 to 50% by mass, more preferably 5 to 30% by mass, relative to the total mass of the oil-in-water cosmetic. More preferably, 10 to 20% by mass is particularly preferable.

In the cosmetic according to the present invention, it is preferable that the component (F) is blended in the oil phase of the oil-in-water cosmetic. The affinity of component (F) for the oil phase is improved by subjecting the component (F) to be blended in the oil phase to a hydrophobic treatment. In the cosmetic according to the present invention, the hydrophobic-treated coloring material may be kneaded with oil and then blended into the cosmetic, or may be dispersed in the oil phase by blending a dispersant as necessary. good too.

The cosmetics according to the present invention can contain other optional ingredients as required. Examples of such components include:
(a) Surfactants (for example, nonionic surfactants such as polyethylene glycol fatty acid esters, polyoxyethylene fatty acid glyceryl polyoxyethylene/methylpolysiloxane copolymers; N-cocoyl glutamate, coconut oil fatty acid methyltaurate salts, anionic surfactants such as N-caproylmethyltaurate salts; cationic surfactants such as lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, myristyltrimethylammonium chloride, myristyltrimethylammonium bromide, cetyltrimethylammonium chloride ; Amphoteric surfactants such as imidazoline-based amphoteric surfactants or betaine-based surfactants);
(b) water-soluble UV absorbers (e.g., benzophenone UV absorbers, benzimidazole UV absorbers, camphor UV absorbers, etc.);
(c) moisturizers (e.g., 1,3-butylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, glycerin, diglycerin, xylitol, maltitol, maltose, D-mannitol, etc.);
(d) Powder component (other than component (F), which can adjust usability of cosmetics by blending in water phase), (for example, inorganic powder such as talc, kaolin, mica, nylon powder , organic powders such as polyethylene powders, inorganic pigments such as titanium dioxide, zinc oxide, red iron oxide, black iron oxide, etc.);
(e) hydrophilic thickeners (e.g., gela gum, xanthan gum, polysaccharides such as agar, copolymers containing 2-acrylamido-2-methylpropanesulfonic acid, (dimethylacrylamide/acryloyldimethyltaurate Na) crosspolymers, acrylic acid hydroxyethyl/acryloyldimethyltaurate Na) copolymer, synthetic polymer compounds such as (acrylic acid Na/acryloyldimethyltaurate Na) copolymer, clay minerals, etc.);
(f) a lipophilic thickener;
(g) a lower alcohol (less than 6 carbon atoms);
(i) antioxidants (e.g., tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallates, etc.);
(j) preservatives (methylparaben, ethylparaben, butylparaben, phenoxyethanol, etc.);
(k) antiphlogistic agents (e.g., glycyrrhizic acid derivatives, glycyrrhizic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.);
(l) whitening agents (for example, saxifrage extract, arbutin, tranexamic acid, potassium 4-methoxysalicylate, ascorbic acid glucoside, niacinamide, etc.);
(m) Various extracts (e.g., Phellodendron bark, coptis chinensis, peony, peony, japonica japonica, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, luffa, lily, saffron, cnidium, ginger, hypericum, ononis, garlic, hot pepper, chimpitoki, seaweed, etc.);
(n) an activator (e.g., royal jelly, photosensitizer, cholesterol derivative, etc.);
(o) blood circulation promoters (e.g., nonylic acid valenylamide, nicotinic acid benzyl ester, etc.);
(p) antiseborrheic agents (e.g. sulfur, thianthol, etc.);
(q) anti-inflammatory agents (e.g. tranexamic acid, thiotaurine, hypotaurine, etc.);
(r) oil-soluble film-forming agents (for example, PVP-based film-forming agents such as PVP/dimethylaminoethyl methacrylic acid copolymers; acrylic acid-based film-forming agents such as ethyl acrylate/acrylic acid amide/acrylic acid copolymers; Methacrylic acid film agents such as polymethyl methacrylate; vinyl methyl ether film agents such as vinyl methyl ether/ethyl maleate copolymer and vinyl methyl ether/butyl maleate copolymer; styrene/methylstyrene/indene copolymer styrene-based film agents such as coalescence; alkyd resin-based film agents such as cyclohexane-based alkyd resins; silicone resin-based film agents such as trimethylsiloxysilicate, etc.);
(s) a water-soluble film-forming agent (e.g., hydroxyethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, polyethylene glycol, etc.); and (t) an amino acid or peptide (e.g., glutamic acid, glycine, serine, alanine, arginine, lysine, hydroxypurine, glycylglycine and their salts)
etc.

The cosmetic according to the present invention contains the above ingredients, and the cosmetic is molded into a product. The form of the cosmetic according to the present invention is not particularly limited, and may be in the form of foundation, makeup base, white powder, blush, lipstick, mascara, eye shadow, eyeliner, and the like. In particular, it can be suitably used for cosmetics such as foundation, which are applied over a wide area and tend to come into contact with clothing after application.

The method for producing the oil-in-water cosmetic of the present invention is not particularly limited, and any method can be adopted. For example, aqueous components (components (A), (B), and (D) and other aqueous components) are mixed to uniformly dissolve or disperse, while oily components (component (C) and other oily components) are mixed. can be mixed and uniformly dissolved or dispersed, combined, and emulsified by a conventional method.

[Example]
EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited by these. In addition, unless otherwise specified, the content represents % by mass with respect to the total mass of the cosmetic.

An oil-in-water emulsified cosmetic having the composition shown in Table 1 below was produced and evaluated for the following items. Those results are also shown in Table 1 together.

(1) Usability and Finish Evaluation was made by sensory evaluation by 6 expert panelists. Specifically, during application, when the cosmetic is spread with bare hands, it can be spread evenly. Whether or not the cosmetics collapsed after a period of time was visually evaluated.
A: very good B: good C: somewhat good D: poor

(2) Secondary adhesion inhibitory effect 0.2 g of the prepared cosmetic was applied to both cheeks from the eye down, left to dry for 5 minutes, and then a mask was worn. After 4 hours, the mask was removed, and the surface in contact with the cheek was observed and evaluated.
A: very good B: good C: somewhat good D: poor

(3) Production suitability Ease of pouring cosmetics prepared at about 55°C into packaging containers was evaluated.
A: very good B: good C: somewhat good D: poor

From the above results, only when all the components (A) to (D) are combined, excellent effects on usability, finish, secondary adhesion, and manufacturing suitability can be obtained. It turns out that the effect is not obtained. Further, it can be seen that the desired effect cannot be obtained even when, for example, the acrylic acid copolymer is replaced with another copolymer.

Claims (10)

(A) (meth)acrylic acid/(meth)alkyl acrylate/(meth)acrylic acid POE monoalkyl ether ester copolymer,
(B) polyvinyl acetate,
An oil-in-water cosmetic containing (C) oil and (D) water. (A) component is selected from acrylates/steareth-20 methacrylate copolymer, acrylates/beheneth-25 methacrylate copolymer, acrylates/steareth-20 methacrylate crosspolymer, and ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymer; , The cosmetic according to claim 1. Claim 1 or wherein the content of component (A) is 0.003 to 3% by mass and the content of component (B) is 0.003 to 20% by mass with respect to the total mass of the cosmetic composition 2. Cosmetics according to 2. The cosmetic according to claim 1 or 2, wherein the ratio of the content of component (B) to the content of component (A) is 0.1-100. 3. The cosmetic according to claim 1, further comprising (E) polyvinyl alcohol. The cosmetic according to claim 5, wherein the content of component (E) is 0.001 to 2% by mass with respect to the total mass of the cosmetic. 3. The cosmetic according to claim 1, further comprising (F) a hydrophobic treatment colorant. The cosmetic according to claim 7, wherein the component (F) is blended in the oil phase The cosmetic according to claim 7, wherein the content of component (F) is 3 to 50% by mass with respect to the total mass of the cosmetic. The cosmetic according to claim 1 or 2, which is a foundation.