Oil-in-water emulsified cosmetic

Abstract

To provide a stable oil-in-water emulsified cosmetic that has a pearlescent appearance without containing a pearlescent pigment, and that can impart a light texture when applied.SOLUTION: Provided is an oil- in- water emulsified cosmetic containing: (a) an aqueous medium; (b) two or more higher fatty acids with 12 to 24 carbon atoms or alkali metal salts thereof; (c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group with 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group with 12 to 24 carbon atoms; (d) a thickener comprising (d-1) a polysaccharide derived from a microorganism and (d-2) a (meth)acrylic-based polymer including as a structural unit at least one selected from the group consisting of a (meth)acrylic acid ester and a (meth)acryloylalkyltaurine and a salt thereof; and (e) a nonionic surfactant.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an oil-in-water emulsion cosmetic preparation. [Background technology]

[0002] Skin care products with a pearlescent appearance are known, and such pearlescent appearance is created by pearlescent pigments such as mica / tin oxide, etc. However, these pearlescent pigments tend to clog pores and dry out the skin, so skin care products containing pearlescent pigments are generally not popular with consumers.

[0003] Cosmetics that produce a pearlescent appearance without using pearl pigments include, for example, a cosmetic composition containing waxes such as alkylene glycol esters, an emulsifier, and a polyol ester, as described in U.S. Pat. No. 6,835,700, and a cosmetic composition containing a higher fatty acid and an alkali metal higher fatty acid soap, as described in WO 2010 / 046406. Summary of the Invention [Problem to be solved by the invention]

[0004] The cosmetic compositions described in the above-mentioned prior art contain a large amount of waxes and higher fatty acids, and therefore have a high viscosity, which causes a problem of giving a sticky or heavy feel upon application.

[0005] The object of the present invention is to provide a stable oil-in-water emulsion cosmetic that has a pearlescent appearance without containing pearl pigments and can provide a light texture when applied. Here, "pearlescent appearance" means a pearl-like appearance visually evaluated by applying 1 mg of the oil-in-water emulsion cosmetic to a black plate. When applied onto the skin, the composition of the present invention provides a bright or radiant complexion to make the skin look younger. [Means for solving the problem]

[0006] The present invention provides an oil-in-water cosmetic composition comprising (a) an aqueous medium, (b) two or more kinds of higher fatty acids having 12 to 24 carbon atoms or alkali metal salts thereof, (c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group having 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group having 12 to 24 carbon atoms, (d) (d-1) a polysaccharide derived from a microorganism, and (d-2) a thickener containing a (meth)acrylic polymer, and (e) a nonionic surfactant. Note that "(a) aqueous medium" may be simply referred to as "(a) component", and other components are similarly abbreviated. In addition, in this specification, "(meth)acrylic" means acrylic or methacrylic, and the same applies to other similar skeletons.

[0007] The oil-in-water emulsion cosmetic of the present invention may further contain (f) ceramide. By containing component (f), it is possible to provide even greater moisture upon application.

[0008] In the oil-in-water emulsion cosmetic of the present invention, the nonionic surfactant (e) is preferably at least one selected from the group consisting of glycerin fatty acid esters, fatty acid polyethylene glycols, and polyglycerin fatty acid esters, which provides the oil-in-water emulsion cosmetic with improved stability.

[0009] The viscosity of the oil-in-water emulsion cosmetic of the present invention is preferably 2000 mPa·s or less at 25° C. If the viscosity is within the above range, a lighter texture can be imparted upon application.

[0010] The present invention also relates to a cosmetic method for caring for and / or making up keratinous materials, in particular skin, which comprises applying an oil-in-water emulsion cosmetic composition as defined in the present invention. In particular, the cosmetic method of the present invention provides a bright or radiant complexion on the skin. Effect of the Invention

[0011] According to the present invention, it is possible to provide a stable oil-in-water emulsion cosmetic that has a pearlescent appearance without containing a pearl pigment and can impart a light texture upon application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Preferred embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments.

[0013] aqueous medium The oil-in-water emulsion cosmetic according to this embodiment contains (a) an aqueous medium. The aqueous medium may contain only water, or may further contain a water-soluble solvent.

[0014] As the water, distilled water, purified water, hot spring water, deep sea water, as well as steam-distilled water derived from plants such as lavender water, rose water, and orange flower water can be used.

[0015] Examples of water-soluble solvents include monools such as methanol, ethanol, propyl alcohol, isopropyl alcohol, and phenoxyethanol, and polyhydric alcohols such as ethylene glycol, 1,3-propanediol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, polyethylene glycol, glycerin, diglycerin, polyglycerin, sorbitol, xylitol, and mannitol. The water-soluble solvents may be used alone or in combination of two or more.

[0016] The content of the (a) aqueous medium is preferably 80 to 95% by mass, more preferably 90 to 95% by mass, based on the total mass. In this specification, "based on the total mass" means based on the total mass of the oil-in-water emulsion cosmetic. "% by mass" is also referred to as "% by weight" below.

[0017] higher fatty acids The oil-in-water emulsion cosmetic according to this embodiment contains (b) two or more kinds of higher fatty acids having 12 to 24 carbon atoms or alkali metal salts thereof.

[0018] Examples of higher fatty acids having 12 to 24 carbon atoms include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, palmitoleic acid, oleic acid, linoleic acid, and linolenic acid.

[0019] Examples of the alkali metal salts of higher fatty acids having 12 to 24 carbon atoms include sodium salts and potassium salts.

[0020] Examples of combinations of two or more higher fatty acids having 12 to 24 carbon atoms or their alkali metal salts include two or more selected from the group consisting of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, and their alkali metal salts. Among these, a combination of two selected from the group consisting of palmitic acid, stearic acid, behenic acid, and their alkali metal salts is preferred, as it can provide a more brilliant pearlescent luster, and a combination of stearic acid or its alkali metal salt, and behenic acid or its alkali metal salt is more preferred.

[0021] The content of component (b) is preferably 0.1 to 5% by mass, and more preferably 0.5 to 3% by mass, based on the total mass. By keeping the content of component (b) within the above range, the pearlescent appearance of the oil-in-water emulsion cosmetic can be improved, and a lighter texture can be imparted upon application.

[0022] ether The oil-in-water emulsion cosmetic according to this embodiment contains (c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group with 12 to 24 carbon atoms, and monoalkenyl glyceryl ethers having an alkenyl group with 12 to 24 carbon atoms.

[0023] Monoalkyl glyceryl ethers having an alkyl group with 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group with 12 to 24 carbon atoms are a group of compounds in which a higher alcohol having 12 to 24 carbon atoms is ether-bonded to one hydroxyl group in a glycerin molecule.

[0024] Examples of monoalkyl glyceryl ethers having an alkyl group with 12 to 24 carbon atoms include monolauryl glyceryl ether, monomyristyl glyceryl ether, monocetyl glyceryl ether (chimyl alcohol), monostearyl glyceryl ether (batyl alcohol), monoisostearyl glyceryl ether, monoarachidyl glyceryl ether, and monobehenyl glyceryl ether. Examples of monoalkenyl glyceryl ethers having an alkenyl group with 12 to 24 carbon atoms include monopalmitoleyl glyceryl ether, monooleyl glyceryl ether (selachyl alcohol), monolinoleyl glyceryl ether, and monolinolenyl glyceryl ether. The (c) component may be used alone or in combination of two or more. Among the (c) components, monostearyl glyceryl ether (batyl alcohol) is preferred because it can provide a more brilliant pearlescent luster.

[0025] The content of component (c) is preferably 0.05 to 5 mass % based on the total mass, and more preferably 0.1 to 3 mass %. By keeping the content of component (c) within the above range, the pearlescent appearance of the oil-in-water emulsion cosmetic can be improved, and a lighter texture can be imparted upon application.

[0026] As the components (b) and (c), it is preferable to use a composition obtained by mixing and heating at least (i) two or more kinds of higher fatty acids having 12 to 24 carbon atoms, (ii) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group having 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group having 12 to 24 carbon atoms, and (iii) an alkali metal hydroxide, since it can show a brighter pearly luster. Note that, as the components (b) and (c), Mizoan (registered trademark) Cerawax-Bril (manufactured by Biobeautech), which contains stearic acid or its potassium salt, behenic acid or its potassium salt, monostearyl glyceryl ether (batyl alcohol) and ceramide 3, can also be used.

[0027] Thickener The oil-in-water emulsion cosmetic according to this embodiment contains (d) (d-1) a polysaccharide derived from a microorganism, and (d-2) a thickener containing a (meth)acrylic polymer.

[0028] In the present specification, the term "polysaccharides derived from microorganisms" refers to polysaccharides obtained by purifying, processing, etc., substances produced by microorganisms. Examples of polysaccharides derived from microorganisms include xanthan gum, gellan gum, sclerotium gum, alcaligenes-produced polysaccharides, and Tremella fuciformis polysaccharides. The component (d-1) may be used alone or in combination of two or more. Among the components (d-1), xanthan gum is preferred because it provides excellent stability to oil-in-water emulsion cosmetics.

[0029] In the present specification, the term "(meth)acrylic polymer" refers to a polymer containing (meth)acrylic acid and / or its derivatives, such as (meth)acrylic acid, (meth)acrylic acid esters, and (meth)acrylamide, as a constituent unit. In a specific embodiment, the (meth)acrylic polymer is selected from the group consisting of poly(meth)acrylates, and polymers containing at least one selected from the group consisting of (meth)acrylic acid esters, (meth)acryloyl alkyl taurines, and salts thereof, as a constituent unit. The (meth)acrylic polymer is preferably hydrophilic. In another embodiment, the (meth)acrylic polymer is preferably a (meth)acrylic polymer containing at least one selected from the group consisting of (meth)acrylic acid esters and (meth)acryloyl alkyl taurines, and salts thereof, as a constituent unit. Specific examples of polymers containing (meth)acrylic acid or a salt thereof as a constituent unit include poly(meth)acrylates (e.g., sodium polyacrylate). Specific examples of polymers containing a (meth)acrylic acid ester as a structural unit include (acrylates / C10-30 alkyl acrylate) crosspolymer, (acrylates / ethylhexyl acrylate) copolymer, (acrylates / steareth-20 methacrylate) copolymer, and (acrylates / beheneth-25 methacrylate) copolymer.Specific examples of polymers containing (meth)acryloyl alkyl taurine or its salt as a structural unit include (ammonium acryloyl dimethyl taurine / beheneth-25 methacrylate) crosspolymer, (hydroxyethyl acrylate / sodium acryloyl dimethyl taurine) copolymer, (ammonium acryloyl dimethyl taurine / VP) copolymer, (ammonium acryloyl dimethyl taurine / carboxyethyl ammonium acrylate) crosspolymer, (acrylamide / sodium acryloyl dimethyl taurine) copolymer, (dimethylacrylamide / sodium acryloyl dimethyl taurine) crosspolymer, (sodium acrylate / sodium acryloyl dimethyl taurine / dimethylacrylamide) crosspolymer, (sodium acryloyl dimethyl taurine / VP) crosspolymer, polyammonium acryloyl dimethyl taurine, (sodium acrylate / sodium acryloyl dimethyl taurine) copolymer, polysodium acryloyl dimethyl taurine, etc. The (d-2) component may be used alone or in combination of two or more. Among the (d-2) components, poly(meth)acrylates, and polymers containing at least one selected from the group consisting of (meth)acrylic acid esters, (meth)acryloylalkyltaurines and salts thereof as a structural unit are preferred, as they provide excellent stability to oil-in-water emulsion cosmetics, with sodium polyacrylate, (acrylates / C10-30 alkyl acrylate) crosspolymers, and (ammonium acryloyldimethyltaurate / VP) copolymers being more preferred, and (ammonium acryloyldimethyltaurate / VP) copolymers being even more preferred. Note that in this specification, "VP" refers to vinylpyrrolidone.

[0030] The combination of components (d-1) and (d-2) in component (d) may be any combination of the components exemplified as component (d-1) above and the components exemplified as component (d-2) above. Among these, a combination of xanthan gum and one selected from the group consisting of sodium polyacrylate, (acrylates / C10-30 alkyl acrylate) crosspolymer, and (ammonium acryloyldimethyltaurate / VP) copolymer is preferred, as it provides particularly excellent stability to the oil-in-water emulsion cosmetic, and a combination of xanthan gum and (ammonium acryloyldimethyltaurate / VP) copolymer is more preferred.

[0031] In addition to components (d-1) and (d-2), component (d) may contain polysaccharides other than component (d-1) (e.g., hyaluronic acid or a salt thereof, chondroitin sulfate or a salt thereof, guar gum, locust bean gum, pectin, carrageenan, agar, alginic acid or a salt thereof, starch, dextrin, etc.).

[0032] The content of component (d) is preferably 0.1 to 6 mass% based on the total mass, and more preferably 0.2 to 4 mass%. By keeping the content of component (d) within the above range, the stability of the oil-in-water emulsion cosmetic composition becomes superior.

[0033] Of the (d) components, the content of the (d-1) component is preferably 0.05 to 3 mass% based on the total mass, and more preferably 0.1 to 2 mass%. By keeping the content of the (d-1) component within the above range, the stability of the oil-in-water emulsion cosmetic composition is further improved.

[0034] Of the (d) components, the content of the (d-2) component is preferably 0.05 to 3 mass% based on the total mass, and more preferably 0.1 to 2 mass%. By keeping the content of the (d-2) component within the above range, the stability of the oil-in-water emulsion cosmetic composition is further improved.

[0035] Nonionic Surfactants The oil-in-water emulsion cosmetic according to this embodiment contains (e) a nonionic surfactant.

[0036] Examples of nonionic surfactants include glycerin fatty acid esters (e.g., glyceryl myristate, glyceryl stearate, glyceryl oleate), sorbitan fatty acid esters (e.g., sorbitan monostearate, sorbitan monooleate, sorbitan tristearate, sorbitan trioleate), sucrose fatty acid esters, polyoxyethylene alkyl ethers (e.g., polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, etc.), polyoxyethylene alkyl phenyl ethers, and alkyl glucosides. (e.g., decyl glucoside, lauryl glucoside, coco glycoside), fatty acid polyethylene glycol (e.g., polyethylene glycol monolaurate, polyethylene glycol monostearate), fatty acid polyoxyethylene sorbitan (e.g., polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan trioleate), polyglycerin fatty acid ester (e.g., polyglyceryl-10 myristate, polyglyceryl-10 stearate, polyglyceryl-10 oleate), etc. The nonionic surfactant may be used alone or in combination of two or more. As the component (e), at least one selected from the group consisting of glycerin fatty acid ester, fatty acid polyethylene glycol, and polyglycerin fatty acid ester is preferred because it provides excellent stability to the oil-in-water emulsion cosmetic, and a combination of glyceryl stearate and polyethylene glycol stearate is more preferred.

[0037] The content of component (e) is preferably 0.5 to 5 mass% based on the total mass, and more preferably 1 to 4 mass%. By keeping the content of component (e) within the above range, the stability of the oil-in-water emulsion cosmetic composition becomes superior.

[0038] Ceramide The oil-in-water emulsion cosmetic according to this embodiment may further contain (f) ceramide. When the oil-in-water emulsion cosmetic contains component (f), it can provide an even greater level of moisture when applied to the skin.

[0039] Ceramides are a group of compounds in which sphingosine and fatty acid are bonded by amide bonds. Specific examples of ceramides include ceramide 1 (ceramide EOP), ceramide 2 (ceramide NG), ceramide 3 (ceramide NP), ceramide 4 (ceramide EOH), ceramide 5 (ceramide AG), ceramide 6II (ceramide AP), and ceramide 9 (ceramide EOS). Ceramides may be used alone or in combination of two or more. As component (f), ceramide 3 (ceramide NP) is preferred because it can provide more moisture when applied.

[0040] The content of component (f) is preferably 0.05 to 3 mass % based on the total mass, and more preferably 0.1 to 2 mass %. By keeping the content of component (f) within the above range, it is possible to provide even greater moisture when applied to the skin.

[0041] In addition, as the above component (f), Mizoan (registered trademark) Cerawax-Bril (manufactured by Biobeautech) containing stearic acid or its potassium salt, behenic acid or its potassium salt, monostearyl glyceryl ether (batyl alcohol) and ceramide 3 (ceramide NP) can also be used.

[0042] The oil-in-water emulsion cosmetic according to this embodiment may further contain an oil. Examples of the oil include hydrocarbon oils (e.g., liquid paraffin, light liquid isoparaffin, dodecane, isododecane, tetradecane, isotetradecane, hexadecane, isohexadecane, squalane, vegetable squalane, petrolatum, polyisobutylene, polybutene, etc.), oils and fats (e.g., Japan wax, olive oil, castor oil, mink oil, macadamia nut oil, camellia oil, rose pip oil, avocado oil, etc.), waxes (e.g., beeswax, lanolin, carnauba wax, candelilla wax, and galangal wax), ester oils (e.g., jojoba oil, cetyl isooctanoate, tri(caprylic acid / capric acid)glyceryl, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate (triethylhexanoate), and the like. xanoin), polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, diisostearyl malate, neopentyl glycol dioctanoate, cholesterol fatty acid ester, phytosterol fatty acid ester, etc.), silicone oil (e.g., polydimethylsiloxane (dimethicone), polymethylphenylsiloxane (diphenyldimethicone), phenyl trimethicone, diphenylsiloxyphenyl trimethicone, amino-modified silicone, epoxy-modified silicone, carboxy-modified silicone, polyether-modified silicone, alkyl-modified silicone, fluorine-modified silicone, etc.), fluorine-based oil (e.g., perfluoropolyether, perfluorodecalin, perfluorooctane), etc. The oil agent may be used alone or in combination of two or more. In addition, the oil agent in this specification does not include the (b) component and the (c) component.

[0043] In addition to the above-mentioned components, the oil-in-water emulsion cosmetic according to this embodiment can appropriately contain additives such as pH adjusters, chelating agents, antioxidants, anti-fading agents, preservatives, medicinal ingredients, stabilizers, powders, pigments, fragrances, etc., in order to impart various effects. It is preferable that the oil-in-water emulsion cosmetic according to this embodiment does not contain pearl pigments such as mica / titanium oxide in order to avoid clogging of pores and drying of the skin.

[0044] The viscosity of the oil-in-water emulsion cosmetic according to the present embodiment at 25°C is preferably 2000 mPa·s or less, more preferably 1500 mPa·s or less, and even more preferably 1000 mPa·s or less. By setting the viscosity at 25°C within the above range, a lighter texture can be imparted when applied. The viscosity of the oil-in-water emulsion cosmetic according to the present embodiment at 25°C may be, for example, 100 mPa·s or more, 500 mPa·s or more, or 600 mPa·s or more. In a specific embodiment, the viscosity of the composition is in the range of 100 mPa·s to 2000 mPa·s, particularly 500 mPa·s to 1500 mPa·s, and preferably 600 mPa·s to 1000 mPa·s. The viscosity can be measured by using a rotational viscometer (e.g., Rheolab QC; manufactured by Anton Paar).

[0045] The oil-in-water emulsion cosmetic according to this embodiment can be prepared, for example, by the following steps. 1) Component (a) and, if necessary, other aqueous components are mixed and heated with stirring, and then component (d) is added and heated with stirring to obtain an aqueous mixture. 2) Components (b), (c), (e), and, if necessary, component (f), an oil agent, and other oil-based components are mixed and heated with stirring to obtain an oil-based mixture. 3) The oil-based mixture obtained in 2) is added to the aqueous mixture obtained in 1), heated and stirred, and then cooled to room temperature.

[0046] The oil-in-water emulsion cosmetic according to this embodiment can be suitably used as a skin cosmetic, and can be preferably applied to the skin excluding the scalp, and more preferably to the face, body, hands, feet, etc. The oil-in-water emulsion cosmetic according to this embodiment can be used, for example, as an emulsion, a beauty serum, etc. The present invention also relates to a cosmetic method for caring for and / or making up keratinous materials, which comprises applying the oil-in-water emulsion cosmetic defined in the present invention to keratinous materials, particularly to skin. In particular, the cosmetic method of the present invention provides a bright or radiant complexion on the skin. EXAMPLES

[0047] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following examples.

[0048] (1) Preparation of a composition containing stearic acid or its potassium salt, behenic acid or its potassium salt, and batyl alcohol (Table 1; Mizoan® Cerawax-Bril) Stearic acid, behenic acid, and batyl alcohol were mixed and dissolved by heating to 95-110°C. Phytosteryl isostearate and ceramide 3 were added to the dissolved material and stirred at 150-210°C for about 3 hours. Potassium hydroxide was then added and stirred at 80-95°C for about 1 hour, and citric acid was further added and stirred at 70-85°C. The resulting mixture was cooled to room temperature to obtain the title composition.

[0049] [Table 1]

[0050] (2) Preparation of oil-in-water emulsion cosmetics Based on the compositions shown in Table 2, each oil-in-water emulsion cosmetic composition was prepared by the following method. Each component contained in component (a) was mixed at 70°C, and each component contained in component (d) was added thereto and stirred at 70°C to obtain an aqueous mixture. In addition, Mizoan (registered trademark) Cerawax-Bril (a composition containing components (b), (c), and (f)), component (e), and each component contained in the oil agent were mixed and stirred at 80 to 85°C to obtain an oil-based mixture. The oil-based mixture was added to the aqueous mixture and stirred at 80 to 85°C, and then cooled to room temperature to obtain each oil-in-water emulsion cosmetic. The proportion (mass%) of each component is shown in Table 2.

[0051] (3) Appearance evaluation The appearance of each cosmetic was evaluated by visually observing 1 mg of the cosmetic placed on a black plate and assessing it according to the following criteria by a panel of 13 cosmetic experts. A: Appearance with good pearly luster B: Pearlescent appearance C: Appearance without pearlescent luster

[0052] (4) Sensory evaluation The lightness of texture when each cosmetic was applied was evaluated according to the following criteria in a single-use test on the skin by a 13-member cosmetics expert evaluation panel. Here, "lightness of texture" refers to the texture of a composition that can impart a fresh, watery feel and good applicability when the sample is applied to the skin (i.e., the lightness of the feel when placed on the skin). A: The texture is very light. B: Light texture C: The texture is not light.

[0053] (5) Stability evaluation Each cosmetic was placed in a transparent container, sealed with a lid, and stored at 50°C for one month. Those in which no separation between the oil and water phases was observed were rated as Y, and those in which separation between the oil and water phases was observed were rated as N.

[0054] (6) Viscosity measurement The viscosity of each cosmetic at 25° C. was measured using a rotational viscometer (for example, Rheolab QC; manufactured by Anton Paar; spindle: ST22-4V; rotation speed: 100 rpm (3 minutes)).

[0055] [Table 2]

Claims

1. (a) an aqueous medium; (b) two or more kinds of higher fatty acids having 12 to 24 carbon atoms or alkali metal salts thereof, (c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group having 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group having 12 to 24 carbon atoms; (d) (d-1) a polysaccharide derived from a microorganism; and (d-2) a thickener comprising a (meth)acrylic polymer containing at least one selected from the group consisting of a (meth)acrylic acid ester and a (meth)acryloylalkyltaurine and a salt thereof as a structural unit; and (e) Nonionic surfactant An oil-in-water emulsion cosmetic comprising:

2. The oil-in-water emulsion cosmetic according to claim 1 , further comprising (f) a ceramide.

3. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the nonionic surfactant is at least one selected from the group consisting of glycerin fatty acid esters, fatty acid polyethylene glycols, and polyglycerin fatty acid esters.

4. The oil-in-water emulsion cosmetic according to any one of claims 1 to 3, wherein the two or more kinds of higher fatty acids having 12 to 24 carbon atoms or alkali metal salts thereof are selected from the group consisting of palmitic acid, stearic acid, behenic acid, and alkali metal salts thereof, and are preferably stearic acid or an alkali metal salt thereof, and behenic acid or an alkali metal salt thereof.

5. The oil-in-water emulsion cosmetic according to any one of claims 1 to 4, wherein the at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group having 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group having 12 to 24 carbon atoms is monostearyl glyceryl ether.

6. The oil-in-water emulsion cosmetic according to any one of claims 1 to 5, wherein the microbial polysaccharide is xanthan gum.

7. The oil-in-water emulsion cosmetic according to any one of claims 1 to 6, wherein the (meth)acrylic polymer is selected from the group consisting of sodium polyacrylate, (acrylates / C10-30 alkyl acrylate) crosspolymer, and (ammonium acryloyldimethyltaurate / VP) copolymer.

8. The oil-in-water emulsion cosmetic according to any one of claims 1 to 7, wherein the nonionic surfactant is a combination of glyceryl stearate and polyethylene glycol stearate.

9. The oil-in-water emulsion cosmetic according to any one of claims 1 to 8, having a viscosity at 25°C of 2000 mPa·s or less, particularly in the range of 100 mPa·s to 2000 mPa·s.

10. A cosmetic method for caring for and / or making up keratinous materials, comprising applying an oil-in-water emulsion cosmetic composition according to any one of claims 1 to 9 to keratinous materials, in particular to the skin.

11. 11. A cosmetic method according to claim 10 for providing a bright or radiant complexion on the skin.

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