Emulsion cosmetic

Abstract

To provide an emulsion cosmetic that suppresses squeakiness during application and stickiness after application, while containing a high proportion of niacinamide.SOLUTION: An emulsion cosmetic contains component A: niacinamide, component B: polyhydric alcohol, component C: oil-based component that is solid or semisolid at 25°C, component D: oil-based component that is liquid at 25°C, component E: water-soluble polymer, and component F: water, where the content of the component A is 2.0-8.0 mass%, the content of the component B is 3.0-25.0 mass%, the content of the component C is 0.3-5.0 mass%, the content of the component D is 2.0-20.0 mass%, the content of the component E is 0.1-2.0 mass%, and the content of the component F is 30.0-92.6 mass%.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an emulsion cosmetic. [Background technology]

[0002] 2. Description of the Related Art Skin cosmetics containing niacinamide have been known for the purposes of improving wrinkles, preventing blemishes, whitening the skin, and the like (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-247443 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned skin cosmetic, when the amount of niacinamide is increased, a squeaking sensation occurs when the cosmetic is applied to the skin (particularly when the cosmetic is absorbed into the skin), and a sticky feeling occurs after the cosmetic is applied (i.e., after the cosmetic is absorbed into the skin). Such skin cosmetic tends to be disliked, particularly by users who have little experience or who use skin cosmetic products infrequently, which is a problem.

[0005] An object of the present invention is to provide an emulsion cosmetic that contains a high amount of niacinamide and yet suppresses squeaking during application and stickiness after application. [Means for solving the problem]

[0006] The present invention provides an emulsion cosmetic comprising the following components (A), (B), (C), (D), (E), and (F), in which the content of component (A) is 2.0 to 8.0% by mass, the content of component (B) is 3.0 to 25.0% by mass, the content of component (C) is 0.3 to 5.0% by mass, the content of component (D) is 2.0 to 20.0% by mass, the content of component (E) is 0.1 to 2.0% by mass, and the content of component (F) is 30.0 to 92.6% by mass. Ingredient (A): Niacinamide Component (B): Polyhydric alcohol Component (C): An oily component that is solid or semi-solid at 25°C Component (D): An oily component that is liquid at 25°C Component (E): Water-soluble polymer Ingredient (F): Water

[0007] The above-mentioned emulsion cosmetic further contains the following component (G), and the content of component (G) is preferably 0.3 to 2.0% by mass. Component (G): Nonionic surfactant

[0008] The component (B) preferably contains the following component (B1). Component (B1): A polyhydric alcohol selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol.

[0009] The component (D) preferably contains the following component (D1). Component (D1): Silicone oil that is liquid at 25°C

[0010] The component (E) preferably contains the following component (E1). Ingredient (E1): Acrylic water-soluble polymer

[0011] The above-mentioned emulsion cosmetic is preferably an oil-in-water emulsion cosmetic.

[0012] The above-mentioned emulsion cosmetic is preferably in a gel form. Effect of the Invention

[0013] The emulsion cosmetic of the present invention contains a high amount of niacinamide, yet suppresses squeaking during application and stickiness after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention will be described in detail below.

[0015] The emulsion cosmetic of the present invention contains at least niacinamide, a polyhydric alcohol, an oily component that is solid or semi-solid at 25°C, an oily component that is liquid at 25°C, a water-soluble polymer, and water. The emulsion cosmetic of the present invention preferably contains a nonionic surfactant. The polyhydric alcohol preferably contains a polyhydric alcohol selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol. The oily component that is liquid at 25°C preferably contains a silicone oil that is liquid at 25°C. The water-soluble polymer preferably contains an acrylic water-soluble polymer.

[0016] In this specification, the above "niacinamide" may be referred to as "component (A)", the above "polyhydric alcohol" as "component (B)", the above "oil component solid or semi-solid at 25°C" as "component (C)", the above "oil component liquid at 25°C" as "component (D)", the above "water-soluble polymer" as "component (E)", the above "water" as "component (F)", and the above "nonionic surfactant" as "component (G)". In addition, the above "polyhydric alcohol selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol" may be referred to as "component (B1)", the above "silicone oil liquid at 25°C" as "component (D1)", and the above "acrylic water-soluble polymer" as "component (E1)".

[0017] The emulsion cosmetic of the present invention contains component (A), component (B), component (C), component (D), component (E), and component (F). The emulsion cosmetic of the present invention preferably contains component (G). Component (B) preferably contains component (B1). Component (D) preferably contains component (D1). Component (E) preferably contains component (E1). The emulsion cosmetic of the present invention may contain components (other components) other than the above components (A) to (G). In addition, each of the components contained in the emulsion cosmetic of the present invention (for example, components (A) to (G) and other components) may be used alone or in combination of two or more.

[0018] [Ingredient (A): Niacinamide] Component (A) is niacinamide (nicotinic acid amide). Component (A) is, for example, a compound whose INCI name is "Niacinamide". Component (A) is an active ingredient for improving wrinkles, preventing spots, whitening, etc. Component (A) may be used alone or in combination of two or more kinds.

[0019] The content of component (A) in the emulsion cosmetic of the present invention is 2.0% by mass or more, preferably 3.0% by mass or more, and 8.0% by mass or less, preferably 6.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 2.0% by mass or more, the effects of improving wrinkles, preventing spots, and whitening can be fully exerted. When the content is 8.0% by mass or less, squeaking during application and stickiness after application can be suppressed. The content of component (A) is the total content of all components (A) in the emulsion cosmetic of the present invention.

[0020] [Component (B): Polyhydric alcohol] Component (B) is a polyhydric alcohol. Component (B) exerts the effect of suppressing squeaking during application and stickiness after application. In particular, it is excellent in the effect of suppressing squeaking during application. Furthermore, it exerts the effect of suppressing white cast. Incidentally, "white cast" refers to the phenomenon in which a white precipitate appears on the skin after an emulsion cosmetic dries. Examples of component (B) include glycols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, and 1,2-decanediol; glycerols such as glycerin, diglycerin, and polyglycerin; and sugar alcohols such as xylitol, trehalose, maltitol, mannitol, sorbitol, erythritol, arabitol, ribitol, galactitol, glucitol, and erythritol. Among these, from the viewpoint of further enhancing the effect of suppressing squeaking during application and suppressing stickiness after application, it is preferable that component (B) contains component (B1). Component (B1) is a polyhydric alcohol (at least one polyhydric alcohol) selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol. Component (B) and component (B1) may be used alone or in combination of two or more.

[0021] The content of component (B) in the emulsion cosmetic of the present invention is 3.0% by mass or more, preferably 5.0% by mass or more, and 25.0% by mass or less, preferably 20.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 3.0% by mass or more, squeaking during application and stickiness after application are sufficiently suppressed. When the content is 25.0% by mass or less, stickiness after application is sufficiently suppressed. The content of component (B) is the total content of all components (B) in the emulsion cosmetic of the present invention.

[0022] The content of component (B1) in the emulsion cosmetic of the present invention is not particularly limited, but from the viewpoint of further improving the effect of suppressing squeaking during application and suppressing stickiness after application, it is preferably 3.0% by mass or more, more preferably 5.0% by mass or more, relative to 100% by mass of the emulsion cosmetic of the present invention, and from the viewpoint of suppressing stickiness after application, it is 25.0% by mass or less, preferably 20.0% by mass or less. The content of component (B1) above is the total content of all components (B1) in the emulsion cosmetic of the present invention.

[0023] [Component (C): An oil-based component that is solid or semi-solid at 25°C] Component (C) is an oily component that is solid or semi-solid at 25°C. In this specification, "solid or semi-solid at 25°C" means a property that has no fluidity at 25°C. Component (C) exerts the effect of suppressing squeaking during application and stickiness after application. In particular, it is excellent in the effect of suppressing squeaking during application. Furthermore, it also exerts the effect of improving the compatibility of the cosmetic with the skin when applied. Examples of component (C) include hydrocarbon oils, higher alcohols (e.g., aliphatic alcohols having 12 to 24 carbon atoms, etc.), ester oils, animal and vegetable oils, silicone oils, higher fatty acids, etc. Component (C) may be used alone or in combination of two or more.

[0024] Examples of the above-mentioned hydrocarbon oils (hydrocarbon oils that are solid or semi-solid at 25° C.) include petrolatum, ceresin, ozokerite, paraffin, microcrystalline wax, polyethylene wax, and Fischer-Tropsch wax (synthetic wax).

[0025] Examples of the higher alcohol (higher alcohol that is solid or semi-solid at 25° C.) include cetyl alcohol (cetanol), stearyl alcohol, behenyl alcohol, and the like.

[0026] Examples of the animal and vegetable oils (solid or semi-solid animal and vegetable oils at 25°C) include animal and vegetable waxes such as carnauba wax, sunflower seed wax, candelilla wax, Japan wax, rice bran wax, beeswax, shellac wax, and spermaceti; shea butter, cacao butter, astrocaryum murumuru seed butter, hydrogenated castor oil, mango butter, and palm oil.

[0027] Examples of the ester oils (ester oils that are solid or semi-solid at 25°C) include hydrogenated castor oil hydroxystearate, tri(caprylic acid / capric acid / myristic acid / stearic acid)glyceryl, dipentaerythrityl hexahydroxystearate, ethyl stearate, myristyl myristate, cholesteryl isostearate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosin acid), dipentaerythrityl tetra(hydroxystearate / isostearate), and di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate.

[0028] Examples of the silicone oil (solid or semi-solid silicone oil at 25° C.) include highly polymerized dimethicone, dimethiconol, and the like. This is also fine.

[0029] The content of component (C) in the emulsion cosmetic of the present invention is 0.3% by mass or more, preferably 0.7% by mass or more, and 5.0% by mass or less, preferably 2.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 0.3% by mass or more, the squeaking during application and stickiness after application are sufficiently suppressed. When the content is 5.0% by mass or less, the stickiness caused by component (C) can be suppressed, and stickiness after application can be further suppressed. The content of component (C) is the total content of all components (C) in the emulsion cosmetic of the present invention.

[0030] [Component (D): An oily component that is liquid at 25°C] Component (D) is an oily component that is liquid at 25°C. In this specification, "liquid at 25°C" means a property that has fluidity at 25°C. Component (D) exerts the effect of suppressing squeaking during application and stickiness after application. Among them, it is particularly effective in suppressing stickiness after application. Examples of component (D) include hydrocarbon oils, higher alcohols (e.g., aliphatic alcohols having 12 to 24 carbon atoms, etc.), ester oils, animal and vegetable oils, silicone oils, higher fatty acids, etc. Component (D) may be used alone or in combination of two or more.

[0031] The component (D) preferably contains a component (D1). The component (D1) is a silicone oil that is liquid at 25° C. Examples of the component (D1) include dimethylpolysiloxane (for example, a silicone oil having a kinetic viscosity of 1.0 to 60,000 mm at 25° C.). 2 Examples of the silicone oil include dimethylpolysiloxane (oxyethylene-oxypropylene) methylpolysiloxane copolymer, cyclopentasiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyoxyethylene-methylpolysiloxane copolymer, aminoethylaminopropylmethylsiloxane-dimethylpolysiloxane copolymer, and dimethiconol. Component (D1) may be either a volatile silicone oil or a non-volatile silicone oil.

[0032] Examples of the above-mentioned hydrocarbon oils (hydrocarbon oils that are liquid at 25°C) include α-olefin oligomers, squalane (synthetic squalane, vegetable squalane), squalene, liquid isoparaffin, liquid paraffin (mineral oil), (C13-15) alkanes, hydrogenated polyisobutene, hydrogenated polydecene, light isoparaffin (isododecane), light liquid isoparaffin, and liquid isoparaffin.

[0033] Examples of the higher alcohol (higher alcohol that is liquid at 25° C.) include isostearyl alcohol.

[0034] Examples of the animal and vegetable oils (liquid animal and vegetable oils at 25°C) include avocado oil, argan oil, olive oil, rice bran oil, soybean oil, corn oil, palm kernel oil, palm oil, castor oil, grape seed oil, kukui nut oil, jojoba oil, macadamia nut oil, crambe abyssinica seed oil, meadowfoam oil, and sunflower oil.

[0035] Examples of the ester oil (an ester oil that is liquid at 25° C.) include isononyl isononanoate, isopropyl myristate, isodecyl neopentanoate, octyldodecyl myristate, octyldodecyl oleate, octyldodecyl isostearate, diisostearyl malate, diethylhexyl sebacate, glyceryl tri-2-ethylhexanoate (trioctanoin), glyceryl tri(caprylic acid / capric acid), glyceryl triisopalmitate, pentaerythritol tetra-2-ethylhexanoate, pentaerythrityl tetraoctanoate, pentaerythrityl tetraisostearate, and polyglyceryl-10 decaisostearate.

[0036] The content of component (D) in the emulsion cosmetic of the present invention is 2.0% by mass or more, preferably 4.0% by mass or more, and 20.0% by mass or less, preferably 15.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 2.0% by mass or more, the squeaking during application and stickiness after application are sufficiently suppressed. When the content is 20.0% by mass or less, the stickiness caused by component (D) can be suppressed, and the stickiness after application can be further suppressed. In addition, the skin compatibility of the emulsion cosmetic can be improved. The content of component (D) is the total content of all components (D) in the emulsion cosmetic of the present invention.

[0037] The content of component (D1) in the emulsion cosmetic of the present invention is not particularly limited, but from the viewpoint of further enhancing the effect of suppressing squeaking during application and stickiness after application, it is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, relative to 100% by mass of the emulsion cosmetic of the present invention, and from the viewpoint of improving the compatibility of the emulsion cosmetic with the skin, it is preferably 10.0% by mass or less, more preferably 5.0% by mass or less. The content of component (D1) above is the total content of all components (D1) in the emulsion cosmetic of the present invention.

[0038] [Component (E): Water-soluble polymer] Component (E) is a water-soluble polymer. Component (E) is a so-called thickener, and exerts the effect of adjusting the viscosity of the emulsion cosmetic and the effect of improving the formulation stability of the emulsion cosmetic. Furthermore, it improves the effect of suppressing stickiness after application. By thickening the emulsion cosmetic with component (E), the emulsion cosmetic can be made into, for example, a gel, cream, or gel cream formulation. Examples of component (E) include acrylic water-soluble polymers [component (E1)], gelatin, xanthan gum, guar gum, carrageenan, pectin, locust bean gum, alginate, methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose. Component (E) may be used alone or in combination of two or more types.

[0039] The component (E) preferably contains a component (E1). The component (E1) is an acrylic water-soluble polymer (water-soluble acrylic polymer). Examples of the component (E1) include carboxyvinyl polymer, alkyl-modified carboxyvinyl polymer, alkyl acrylate copolymer, (acrylates / steareth-20 methacrylate) copolymer, (acrylates / steareth-20 methacrylate) crosspolymer, (acrylates / beheneth-25 methacrylate) copolymer, (acrylates / vinyl neodecanoate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, and the like. The component (E1) may be used alone or in combination of two or more kinds.

[0040] From the viewpoints of being able to impart a fresh, gel-like formulation to the cosmetic preparation and imparting an excellent feeling of penetration, it is preferable that component (E1) contains the following component (E11) and / or the following component (E12). It is more preferable that component (E1) contains component (E11) and component (E12). Component (E11): A polymer containing a structural unit derived from acryloyldimethyltaurate Component (E12): at least one polymer selected from the group consisting of a polymer containing at least a structural unit derived from (meth)acrylic acid and / or a (meth)acrylic acid alkyl ester and a structural unit derived from a polyoxyethylene alkyl ether (meth)acrylate (hereinafter, may be referred to as "polymer (E12a)"), a carboxyvinyl polymer (hereinafter, may be referred to as "polymer (E12b)"), and an alkyl-modified carboxyvinyl polymer (hereinafter, may be referred to as "polymer (E12c)").

[0041] The component (E11) is a polymer containing at least a structural unit derived from an acryloyldimethyltaurate. The acryloyldimethyltaurate may be sodium acryloyldimethyltaurate. The component (E11) may contain a structural unit derived from a monomer component other than an acryloyldimethyltaurate. Examples of the monomer component other than an acryloyldimethyltaurate include (meth)acrylic acid such as acrylic acid; (meth)acrylic acid salts such as sodium acrylate; hydroxyl group-containing acrylic monomers such as hydroxyethyl acrylate; and amide group-containing acrylic monomers such as acrylic acid amide.

[0042] Examples of the component (E11) include copolymers of acrylate and acryloyldimethyl taurate, copolymers of hydroxyethyl acrylate and acryloyldimethyl taurate, and copolymers of acrylic acid, acrylate, acrylamide, and acryloyldimethyl taurate. As the component (E11), a compound represented by the INCI name "Sodium Acrylate / Sodium Acryloyldimethyl Taurate Copolymer"; a compound represented by the INCI name "Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate Copolymer" and the like are preferred. Among the above, (Sodium Acrylate / Sodium Acryloyldimethyl Taurate) copolymer is preferred.

[0043] As the component (E11), a commercially available product can be used. Examples of the commercially available product include "SIMULGEL EG", "SIMULGEL EG QD", and "SIMULGEL NS" (all manufactured by SEPPIC SA).

[0044] The polymer (E12a) is a polymer containing at least a structural unit derived from (meth)acrylic acid and / or a (meth)acrylic acid alkyl ester (monomer 1) and a structural unit derived from a (meth)acrylic acid polyoxyethylene alkyl ether (monomer 2). Examples of the monomer 2 include polyoxyethylene stearyl ether methacrylate and polyoxyethylene behenyl ether methacrylate. The average number of moles of oxyethylene added in the monomer 2 is preferably 15 to 30. Only one type of the monomer 1 and the monomer 2 may be used, or two or more types may be used. The polymer (E12a) may contain a structural unit derived from a monomer component other than the monomer 1 and the monomer 2.

[0045] Examples of the polymer (E12a) include copolymers of (meth)acrylic acid and / or (meth)acrylic acid alkyl esters and polyoxyethylene stearyl ether methacrylate, copolymers of (meth)acrylic acid and / or (meth)acrylic acid alkyl esters and polyoxyethylene behenyl ether methacrylate, etc. Preferred examples of the polymer (E12a) include compounds represented by the INCI names "ACRYLATES / STEARETH-20 METHACRYLATE COPOLYMER", compounds represented by the INCI names "ACRYLATES / STEARETH-20 METHACRYLATE CROSSPOLYMER", compounds represented by the INCI names "ACRYLATES / BEHENETH-25 METHACRYLATE COPOLYMER", etc. Among the above, from the viewpoint of the stability of the cosmetic preparation, (acrylates / steareth-20 methacrylate) copolymer and (acrylates / beheneth-25 methacrylate) copolymer are preferred.

[0046] As the polymer (E12a), a commercially available product can be used, for example, trade names "Accurin 22", "Accurin 88", and "Accurin 28" (all manufactured by The Dow Chemical Company).

[0047] Polymer (E12b) is a carboxyvinyl polymer (carbomer). Polymer (E12b) is, for example, designated as "Carbomer" in its INCI name.

[0048] As the polymer (E12b), a commercially available product can be used. Examples of the commercially available product include trade names "Carbopol 940", "Carbopol 941", "Carbopol 934", "Carbopol 980", and "Carbopol 981" (all manufactured by Lubrizol Corporation).

[0049] Polymer (E12c) is a polymer in which at least a portion of the carboxyl groups of the carboxyvinyl polymer is esterified (for example, esterified with an alkyl group having 10 to 30 carbon atoms). Polymer (E12c) is expressed, for example, by the INCI name "Acrylates / C10-30 Alkyl Acrylate Crosspolymer".

[0050] As the polymer (E12c), a commercially available product can be used. Examples of the commercially available product include trade names "Pemulen TR 1", "Pemulen TR 2", "Carbopol 1382", "Carbopol 1342", "Carbopol ETD2020", "Carbopol Ultrez 20", and "Carbopol Ultrez 21" (all manufactured by Lubrizol Corporation).

[0051] It is preferable that component (E12) is neutralized with a basic substance or is used after being neutralized with a basic substance. In this case, examples of the basic substance include alkanolamines such as triethanolamine and monoethanolamine; inorganic bases such as ammonia, sodium hydroxide, and potassium hydroxide; and basic amino acids such as arginine. The amount of the basic substance added is an amount sufficient to neutralize component (E12), and may be appropriately mixed depending on the type of component (E12) and the basic substance, and the amount of component (E12) used.

[0052] The content of component (E) in the emulsion cosmetic of the present invention is 0.1% by mass or more, preferably 0.3% by mass or more, and 2.0% by mass or less, preferably 1.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 0.1% by mass or more, the emulsion stability of the emulsion cosmetic is improved. When the content is 2.0% by mass or less, the stickiness caused by component (E) can be suppressed, and the stickiness after application can be further suppressed. In addition, the skin compatibility of the emulsion cosmetic can be improved. The content of component (E) is the total content of all components (E) in the emulsion cosmetic of the present invention.

[0053] The content of component (E1) in the emulsion cosmetic of the present invention is not particularly limited, but from the viewpoint of further enhancing the emulsion stability of the emulsion cosmetic, it is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, relative to 100% by mass of the emulsion cosmetic of the present invention, and from the viewpoint of improving the compatibility of the emulsion cosmetic with the skin, it is 2.0% by mass or less, more preferably 1.0% by mass or less. The content of component (E1) above is the total content of all components (E1) in the emulsion cosmetic of the present invention.

[0054] [Component (F): Water] Component (F) is water. Component (F) is preferably purified water. Component (F) is a medium for the emulsion cosmetic, and in the case of an oil-in-water emulsion cosmetic, it is a medium that forms a continuous phase.

[0055] The content of component (F) in the emulsion cosmetic of the present invention is 30.0% by mass or more, preferably 40.0% by mass or more, and 92.6% by mass or less, preferably 80.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. The content of component (F) is the total content of all components (F) in the emulsion cosmetic of the present invention.

[0056] [Component (G): Nonionic surfactant] Component (G) is a nonionic surfactant. Component (G) exerts an effect of emulsifying an aqueous medium such as component (F) and an oily component such as component (C) and component (D). Examples of component (G) include sorbitan fatty acid esters, glycerin fatty acid esters, and their alkylene oxide adducts, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbit fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterols and derivatives thereof, polyoxyethylene lanolin and derivatives thereof, alkyl glucosides, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil. Among the above, fatty acid ester-type nonionic surfactants such as monoglycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene glycerin fatty acid esters, and polyoxyethylene sorbitan fatty acid esters are preferred. The component (G) may be used alone or in combination of two or more.

[0057] Examples of the monoglycerin fatty acid esters include glyceryl monocaprylate, glyceryl monocaprate, glyceryl monolaurate, glyceryl monomyristate, glyceryl monopalmitate, glyceryl monostearate, glyceryl distearate, glyceryl monoisostearate, glyceryl diisostearate, glyceryl monohydroxystearate, glyceryl monooleate, glyceryl monobehenate, and glyceryl dibehenate.

[0058] Examples of the polyglycerol fatty acid ester include polyglycerol fatty acid monoesters such as diglyceryl monostearate, diglyceryl monooleate, diglyceryl monoisostearate, tetraglyceryl monostearate, tetraglyceryl monooleate, hexaglyceryl monolaurate, hexaglyceryl monomyristate, hexaglyceryl monostearate, hexaglyceryl monooleate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, and decaglyceryl monooleate. polyglycerol fatty acid diesters such as diglyceryl dioleate, decaglyceryl distearate, and decaglyceryl diisostearate; polyglycerol fatty acid triesters such as tetraglyceryl tristearate, hexaglyceryl tristearate, decaglyceryl trioleate, and polyglycerol fatty acid pentaesters such as tetraglyceryl pentastearate, tetraglyceryl pentaoleate, hexaglyceryl pentastearate, and hexaglyceryl pentaoleate.

[0059] The average polymerization degree of polyglycerin in the polyglycerin fatty acid ester is preferably 2 to 10 from the viewpoint of enhancing emulsion stability.

[0060] From the viewpoint of enhancing emulsion stability, the fatty acid in the polyglycerol fatty acid ester is preferably a fatty acid having 8 to 24 carbon atoms, more preferably a fatty acid having 10 to 20 carbon atoms, and even more preferably a fatty acid having 12 to 18 carbon atoms.

[0061] Examples of the sorbitan fatty acid ester include sorbitan monocaprate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan distearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan trioleate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and coconut oil fatty acid sorbitan.

[0062] Examples of the polyoxyethylene fatty acid ester include polyethylene glycol monolaurate, polyethylene glycol monopalmitate, polyethylene glycol monostearate, polyethylene glycol monoisostearate, polyethylene glycol distearate, polyethylene glycol monooleate, and polyethylene glycol dioleate.

[0063] Examples of the polyoxyethylene glycerin fatty acid ester include polyoxyethylene (caprylic / capric acid) glyceryl, polyoxyethylene coconut oil fatty acid glycerin, polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl monomyristate, polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monoisostearate, polyoxyethylene glyceryl triisostearate, etc. The number of moles of ethylene oxide added is not particularly limited, but is preferably 2 to 100, more preferably 4 to 90, from the viewpoint of enhancing emulsion stability.

[0064] Examples of the polyoxyethylene sorbitan fatty acid ester include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan oleate, polyoxyethylene sorbitan trioleate, etc. The number of moles of ethylene oxide added is not particularly limited, but is preferably 5 to 50, more preferably 10 to 30, from the viewpoint of enhancing emulsion stability.

[0065] The content of component (G) in the emulsion cosmetic of the present invention is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and preferably 2.0% by mass or less, more preferably 1.7% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. When the content is 0.3% by mass or more, emulsion stability is further improved. When the content is 2.0% by mass or less, stickiness due to component (G) can be suppressed, and stickiness after application can be further suppressed. The content of component (G) is the total content of all components (G) in the emulsion cosmetic of the present invention.

[0066] [ethanol] The emulsion cosmetic of the present invention may contain ethanol from the viewpoint of improving the compatibility of the cosmetic with the skin. The content of ethanol in the emulsion cosmetic of the present invention is preferably 1.5% by mass or more, more preferably 3.0% by mass or more, and preferably 8.0% by mass or less, more preferably 6.0% by mass or less, based on 100% by mass of the emulsion cosmetic of the present invention. The above ethanol content is the total content of all ethanol in the emulsion cosmetic of the present invention.

[0067] [Other ingredients] The emulsion cosmetic of the present invention may contain components other than the above components (other components) within the scope of not impairing the object of the present invention. The above other components are not particularly limited, and include, for example, components that are usually used in cosmetics and quasi-drugs. Specific examples include powders such as crystalline cellulose, cellulose particles, silica, calcium carbonate, kaolin, and talc; scrubbing agents; refreshing agents such as menthol and menthyl glyceryl ether; moisturizing agents such as glycerin mono 2-ethylhexyl ether and acetyl hydroxyproline; preservatives and disinfectants such as paraoxybenzoic acid esters and phenoxyethanol; pH adjusters such as phosphoric acid and its salts, citric acid and its salts, lactic acid and its salts, sodium hydroxide, and triethanolamine; anti-inflammatory agents such as glycyrrhizic acid and its salts; fragrances; coloring materials; ultraviolet absorbers; antioxidants; sequestering agents (chelating agents); film-forming polymer compounds such as polyvinylpyrrolidone; vitamins; amino acids; astringents; whitening agents; animal and plant extracts; acids; alkalis.

[0068] [Emulsion cosmetic of the present invention] The emulsion cosmetic of the present invention can be produced by a known or conventional method, and the production method is not particularly limited. For example, it can be produced by mixing the above-mentioned components and stirring them with a homomixer, a dispersing mixer, a paddle mixer, or the like.

[0069] The emulsion cosmetic of the present invention may be an oil-in-water (O / W) emulsion cosmetic or a water-in-oil (W / O) emulsion cosmetic. Of these, from the viewpoint of further suppressing stickiness after application, an oil-in-water emulsion cosmetic is preferred.

[0070] The emulsified cosmetic preparation of the present invention can be used by being filled into a container from which the composition can be easily taken out, such as a dispenser container, a tube container, or a wide-mouth jar container.

[0071] The emulsion cosmetic of the present invention is preferably a skin cosmetic applied to the skin. The emulsion cosmetic of the present invention is not particularly limited, but examples thereof include skin care cosmetics such as moisturizing cosmetics, whitening cosmetics, acne care cosmetics, and anti-aging cosmetics (for example, intended to suppress wrinkles and sagging, etc.); scalp care cosmetics (for example, intended to moisturize and suppress sebum, etc.); deodorant cosmetics; sunscreen cosmetics; shaving cosmetics; and body cleansers (for example, body shampoos, solid soaps, etc.). Among these, it is preferable that the emulsion cosmetic of the present invention is a cosmetic for suppressing or improving wrinkles. The emulsion cosmetic of the present invention may be, for example, any of cosmetics, quasi-drugs, medicines, and miscellaneous goods.

[0072] The formulation of the emulsion cosmetic of the present invention is not particularly limited, and examples thereof include various formulations such as lotion, cream, gel, emulsion, aerosol spray, non-aerosol spray, roll-on, sheet (paper), etc. Of these, cream and gel (including gel cream) are preferred.

[0073] The areas to which the emulsion cosmetic of the present invention is applied are not particularly limited, and examples include the face (forehead, eyes, corners of the eyes, cheeks, mouth, etc.), the body (arms, elbows, backs of the hands, fingertips, feet, knees, heels, neck, armpits, back, etc.), etc. EXAMPLES

[0074] The present invention will be specifically described below with reference to examples and comparative examples. The present invention is not limited to the following examples. The amounts listed in the tables are the amounts of each component (i.e., the amount of active ingredient in each raw material, i.e., the pure content), and are expressed in "mass %" unless otherwise specified. For the "mixed raw material of glyceryl behenate and polyglyceryl-6 octastearate" and the "mixed raw material containing (sodium acrylate / sodium acryloyldimethyltaurate) copolymer", the amounts are the amounts of the mixed raw material itself (the product itself, which is the mixed raw material).

[0075] Examples 1 to 8, Comparative Examples 1 to 2 According to the compositions shown in the table, emulsion cosmetics of the examples and comparative examples were prepared by ordinary methods and subjected to the following evaluation tests. The evaluation results are also shown in the table.

[0076] The following mixed raw materials are listed in the table as follows:

[0077] A mixture of glyceryl behenate and polyglyceryl-6 octastearate: Taiyo Kagaku Co., Ltd., product name "TAISET 50-C" Mixed raw material containing (sodium acrylate / sodium acryloyldimethyltaurate) copolymer: manufactured by SEPIC SA, product name "SIMULGEL EG", mixed raw material containing (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, polysorbate 80, sorbitan oleate, isohexadecane, and water

[0078] (evaluation) The evaluation was carried out as follows. All evaluations were carried out by three expert evaluators.

[0079] (Test Example 1: Squeaking when applied) Approximately 0.7 g of the emulsion cosmetic obtained in each of the Examples and Comparative Examples was placed in the palm of the hand, spread on the palm, and then evenly applied to the entire face (until it was felt that the emulsion cosmetic had disappeared from the skin). Based on the application feel, squeaking during application was evaluated according to the following evaluation criteria. <Evaluation criteria for squeakiness during application> ○ (Good): There is no feeling of the palm catching when applying. × (bad): The palm of the hand that was being applied was clearly catching.

[0080] (Test Example 2: Stickiness after application) In Test Example 1, the emulsion cosmetic was applied, and three minutes later, the skin was touched with the palm of the hand, and the stickiness was evaluated according to the following evaluation criteria. <Evaluation criteria for stickiness after application> ○ (Good): Little or no stickiness is felt. × (bad): Stickiness is clearly felt.

[0081] [Table 1]

[0082] [Table 2]

[0083] As shown in the table, the emulsion cosmetics of the Examples had an excellent application feel, suppressing the squeaking sound during application and stickiness after application. Furthermore, the emulsion cosmetics of the Examples all felt like they had blended into the skin within about 30 seconds of application (it felt like the emulsion cosmetics had disappeared from the skin), and had good skin compatibility.

Claims

1. The composition contains the following components A, B, C, D, E, and F, The content of the component A is 2.0 to 8.0 mass %, The content of the component B is 3.0 to 25.0 mass %, The content of the component C is 0.3 to 5.0 mass %, The content of the component D is 2.0 to 20.0 mass %, The content of the component E is 0.1 to 2.0 mass %, The emulsion cosmetic contains component F in an amount of 30.0 to 92.6% by mass. Ingredient A: Niacinamide Component B: Polyhydric alcohol Component C: An oily component that is solid or semi-solid at 25°C Component D: An oily component that is liquid at 25°C Component E: Water-soluble polymer Component F: Water

2. The emulsion cosmetic according to claim 1, further comprising the following component G, wherein the content of said component G is 0.3 to 2.0% by mass: Component G: Nonionic surfactant

3. The emulsion cosmetic according to claim 1 or 2, wherein the component B comprises the following component B1: Component B1: A polyhydric alcohol selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol

4. The emulsion cosmetic according to claim 1 or 2, wherein the component D comprises the following component D1: Component D1: Silicone oil that is liquid at 25°C

5. The emulsion cosmetic according to claim 1 or 2, wherein the component E comprises the following component E1: Component E1: Acrylic water-soluble polymer

6. The emulsion cosmetic according to claim 1 or 2, which is an oil-in-water emulsion cosmetic.

7. The emulsion cosmetic preparation according to claim 1 or 2, which is in a gel form.

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