Emulsified cosmetics

Abstract

To provide an emulsion cosmetic that can be readily stirred in a container at the time of use, has a uniform appearance, and gives a finish with a smooth feeling and not with a dry feeling after its application.SOLUTION: An emulsion cosmetic includes following components (A), (B), (C) and (D): (A) silica with a specific surface area of 150 m2 / g or less of 0.1-25 mass%, (B) zinc oxide of 1-30 mass%, (C) a silicone-based film-forming agent of 0.1-10 mass%, and (D) a nonvolatile oil being liquid at 25°C of 4-16 mass%.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to emulsified cosmetics. [Background technology]

[0002] Traditionally, in order to obtain cosmetics with superior staying power, cosmetics containing fine-particle zinc oxide or trimethylsiloxysilicate have been considered. For example, Patent Document 1 describes a water-in-oil emulsion cosmetic containing trimethylsiloxysilicate, fluorine-modified silicone resin, fine zinc oxide particles, and spherical silica, and Patent Document 2 describes a water-in-oil emulsion cosmetic containing trimethylsiloxysilicate, powder surface-treated with a fluorine compound, fine zinc oxide particles, and spherical silica. These emulsified cosmetics are superior in that they suppress makeup breakdown and stickiness even after a long time has passed since application, and provide a smooth, non-greasy feel. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2015-120662 [Patent Document 2] Japanese Patent Publication No. 2015-120663 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, conventional emulsified cosmetics containing film-forming agents, fine zinc oxide particles, and silica have problems with texture, such as partial solidification of the cosmetic when stored at rest, poor agitation when the container is shaken before use, an uneven appearance of the cosmetic, and a strong stickiness after application. [Means for solving the problem]

[0005] The inventors have discovered that by using silica, which has a small specific surface area, in a specific ratio with zinc oxide, a silicone-based film-forming agent, and a non-volatile oil, an emulsified cosmetic composition can be obtained that has excellent mixability, a uniform appearance, a smooth feel after application, and a non-drying finish.

[0006] The present invention comprises the following components (A), (B), (C), and (D): (A) Specific surface area 150m 2 Silica less than / g, 0.1-25% by mass, (B) Zinc oxide 1-30% by mass, (C) Silicone-based film-forming agent 0.1-10% by mass, (D) Non-volatile oil that is liquid at 25°C, 4-16% by mass This relates to emulsified cosmetics containing [a specific ingredient]. [Effects of the Invention]

[0007] The emulsified cosmetic composition of the present invention exhibits excellent agitation properties, with the stirring ball moving easily when the container is shaken during use, and superior uniformity in the appearance of the dispensed liquid after stirring. Furthermore, the skin feels smooth and dry after application, resulting in a non-drying finish. [Modes for carrying out the invention]

[0008] Component (A), silica, has a specific surface area of ​​150 m². 2 It is less than / g, has good mixing properties for emulsified cosmetics, and offers excellent usability, hence the selection of 125m 2 Preferably less than / g, 100m 2 More preferably less than / g, 60m 2 A value of less than or equal to / g is even more preferable. In this invention, the specific surface area is measured by the BET method (N2).

[0009] Furthermore, the silica in component (A) is preferably spherical in shape, from the viewpoint of good mixability of the emulsified cosmetic and superior feel. Here, "spherical" includes perfect spheres, approximately spherical shapes, and ellipsoids, and may also be spherical powders with irregularities on the surface. The silica of component (A) is preferably 1 to 50 μm in volume average particle size, more preferably 1 to 35 μm, even more preferably 2 to 25 μm, and even more preferably 3 to 15 μm, from the viewpoint of good mixability of the emulsified cosmetic and excellent usability. In this invention, the volume-average particle size is the value measured using a laser diffraction scattering particle size analyzer (LMS-350, manufactured by Seishin Corporation) with ethanol as the dispersion medium. The volume-average particle size is the average particle diameter based on volume, and is defined as the 50% median diameter.

[0010] Furthermore, the silica in component (A) is preferably 0.2 mL / g or less in pore volume, and more preferably 0.02 to 0.15 mL / g or less, from the viewpoint of obtaining good mixing properties of the emulsified cosmetic and a smooth texture. In the present invention, the pore volume is determined as follows. Specifically, 10 g of silica powder is placed in a crucible, dried at 105°C for 1 hour, and then cooled to room temperature in a desiccator. Next, 1 g of the sample is placed in a well-cleaned cell, nitrogen is adsorbed using a nitrogen adsorption device, and the pore volume is calculated using the following formula. Pore ​​volume (mL / g) = (0.001567 × (V - Vc) / W) In the above formula, V represents the adsorption volume at standard conditions at a pressure of 735 mmHg (mL), Vc represents the volume of the cell blank at a pressure of 735 mmHg (mL), and W represents the weight of the sample (g). The ratio of the densities of nitrogen gas to liquid nitrogen is assumed to be 0.001567.

[0011] The silica in component (A) can be used as is, or it can be used after being hydrophobized by a conventional method. Examples of hydrophobic treatments include surface treatments such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, acylated amino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylate resin treatment, and urethane resin treatment. As the hydrophobization treatment, from the viewpoint of easy movement of the stirring ball when the container is shaken during use, good stirring property, and excellent uniformity of the appearance of the discharged liquid after stirring, hydrophobization treatment with at least one or two or more selected from silicone treatment, amino acid treatment, and acylated amino acid treatment is preferable, silicone treatment is more preferable, and dimethicone treatment is even more preferable.

[0012] From the viewpoint of good stirring property of the emulsified cosmetic and excellent usability, the content of component (A) is 0.1% by mass or more in the total composition, preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, 25% by mass or less, preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 13% by mass or less. Moreover, the content of component (A) is 0.1 to 25% by mass in the total composition, preferably 1 to 20% by mass, more preferably 2 to 15% by mass, and even more preferably 3 to 13% by mass.

[0013] The zinc oxide of component (B) used in the present invention preferably has a number average particle diameter of 0.01 to 1 μm, more preferably 0.01 to 0.8 μm, and even more preferably 0.01 to 0.08 μm from the viewpoints of excellent covering power and makeup persistence. The number average particle diameter is a value measured with a laser diffraction / scattering particle size distribution analyzer (manufactured by Seishin Enterprise Co., Ltd., LMS-350) using ethanol as a dispersion medium. The number average particle diameter is the average particle diameter based on number.

[0014] Further, the zinc oxide of component (B) preferably has a specific surface area of 0.1 to 100 m 2 / g, more preferably 1 to 100 m 2 / g, and even more preferably 15 to 95 m 2 / g from the viewpoints of excellent covering power and makeup persistence. Here, the specific surface area is measured in the same manner as component (A). Furthermore, the zinc oxide of component (B) can be used as it is, or can be used after being hydrophobized in the same manner as component (A).

[0015] The content of component (B) is 1% by mass or more in the total composition, preferably 2% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, 30% by mass or less, preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 11% by mass or less from the viewpoints of excellent covering power and long-lasting makeup effect. Also, the content of component (B) is 1 to 30% by mass in the total composition, preferably 2 to 20% by mass, more preferably 3 to 15% by mass, and even more preferably 5 to 11% by mass.

[0016] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.15 or more, more preferably 0.2 or more, even more preferably 0.3 or more, preferably 4 or less, more preferably 3 or less, and even more preferably 2 or less from the viewpoint of obtaining a smooth feeling. Also, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.15 to 4, more preferably 0.2 to 3, and even more preferably 0.3 to 2.

[0017] As the silicone-based film-forming agent of component (C) used in the present invention, any one can be used as long as it is used in ordinary cosmetics, and those in a solid state at 25°C are preferred. Examples of the silicone-based film-forming agent include trimethylsiloxysilicic acid, acrylic silicone resin, and the like.

[0018] Among component (C), trimethylsiloxysilicic acid is not limited as long as it is used in ordinary cosmetics, and it is a compound having a crosslinked structure with a siloxane structure as the main skeleton, represented by [(CH3)3SiO 1 / 2 m [SiO2] n (where m is 1 to 3 and n is 0.5 to 8) is preferred. ​From the viewpoint of makeup longevity and finish, trimethylsiloxysilicate with a mass-average molecular weight of 1,000 to 10,000 is preferred, 2,000 to 9,000 is more preferred, and 3,000 to 6,000 is even more preferred. Its properties can be liquid, gum, paste, or solid at 25°C, but a solid state is preferred from the viewpoint of the resulting makeup longevity and finish. From the viewpoint of compatibility, it can be used as a diluted solution or dispersion with a solvent, or as a solution or dispersion obtained by pre-mixing. The solvent used for dilution or dispersion is preferably one or more selected from dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane, with volatile dimethylpolysiloxane and decamethylcyclopentasiloxane being more preferred. Volatility refers to having a flash point of 35 to 87°C.

[0019] Commercially available trimethylsiloxysilicate products that have been pre-dissolved in a solvent include KF-7312J (50% decamethylcyclopentasiloxane solution), KF-9021 (50% decamethylcyclopentasiloxane solution), X21-5249 (50% decamethylcyclopentasiloxane solution) (all manufactured by Shin-Etsu Chemical Co., Ltd.), SS4267 (35% dimethylpolysiloxane solution), SR1000 (both manufactured by Momentive Performance Materials Japan LLC), BY11-018 (30% cyclopentasiloxane solution) (manufactured by Toray Dow Corning Silicone Co., Ltd.); and others such as BELSIL TMS 803 (manufactured by Wacker Chemie AG).

[0020] Furthermore, among the components (C), examples of acrylic silicone resins include vinyl polymers having a carbosiloxane dendrimer structure in the side chain, and acrylic-silicone graft copolymers. Examples of vinyl polymers having a carbosiloxane dendrimer structure in their side chains include silicone dendrimer-acrylic copolymers, which can be manufactured according to the manufacturing methods described in, for example, Japanese Patent Publication No. 11-1530 and Japanese Patent Publication No. 2000-63225. The number-average molecular weight of the vinyl polymer having a carbosiloxane dendrimer structure used in the present invention is preferably 3,000 to 2,000,000, and more preferably 5,000 to 800,000, from the viewpoint of cosmetic retention and finish. Furthermore, from the viewpoint of makeup longevity and finish, its properties are preferably in a solid state. In addition, vinyl polymers having a carbosiloxane dendrimer structure can be formulated in a solid state, but they can also be used dissolved in a solvent. Examples of solvents include silicone oil and hydrocarbon oil, and one or more selected from dimethylpolysiloxane, decamethylcyclopentasiloxane, and isododecane can be used.

[0021] As a vinyl polymer having a carbosiloxane dendrimer structure in its side chain, a silicone dendrimer-acrylic copolymer is preferred, and the cosmetic labeling name "(Acrylates / Polytrimethylsiloxymethacrylate) Copolymer" (INCI name "Acrylates / Polytrimethylsiloxymethacrylate Copolymer") is preferred. Commercially available products such as FA4001CM (30% by mass decamethylcyclopentasiloxane solution), FA4002ID (40% by mass isododecane solution), and FA4003DM (40% by mass dimethicone solution) (all manufactured by Toray Dow Corning) which have been dissolved in a solvent beforehand can be used.

[0022] Furthermore, acrylic-silicone graft copolymers are radical polymers of an organopolysiloxane compound having a radically polymerizable group at one end of its molecular chain and a radically polymerizable monomer mainly composed of acrylate and / or methacrylate. For example, acrylic-silicone graft copolymers described in Japanese Patent Publication No. 2-25411, Japanese Patent Publication No. 2-132141, etc., or acrylic-silicone graft copolymers described in Japanese Patent Publication No. 3-162442, Japanese Patent Publication No. 2003-104825, etc. can be used.

[0023] As the acrylic-silicone graft copolymer, the cosmetic labeling name "(Acrylates / Dimethicone) Copolymer" (INCI name "Acrylates / Dimethicone Copolymer") is preferred, and commercially available products such as KP545 (30% by mass decamethylcyclopentasiloxane solution), KP549 (40% by mass methyl trimethicone solution), KP550 (40% by mass isododecane solution), and KP545L (40% by mass dimethicone solution) (all manufactured by Shin-Etsu Chemical Co., Ltd.), which have been pre-dissolved in a solvent, can be used.

[0024] As for component (C), from the viewpoint of makeup longevity and finish, it is preferable to include one or more selected from trimethylsiloxysilicate and acrylic silicone resin, and more preferably to include at least trimethylsiloxysilicate.

[0025] Component (C) can be used in combination of one or more types, and its content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, more preferably 0.5% by mass or more, more preferably 1% by mass or more, more preferably 10% by mass or less, more preferably 8% by mass or less, more preferably 6% by mass or less, and more preferably 5% by mass or less, from the viewpoint of makeup longevity and finish. Furthermore, the content of component (C) is 0.1 to 10% by mass of the total composition, preferably 0.2 to 8% by mass, more preferably 0.5 to 6% by mass, and even more preferably 1 to 5% by mass.

[0026] The component (D) used in this invention is a non-volatile oil that is liquid at 25°C. "Liquid at 25°C" means that the substance is fluid at 25°C, and this includes creamy and pastey substances. "Non-volatile" means that when 1g of the oil is spread in a 48mm diameter glass petri dish and left at 25°C under normal pressure for 24 hours, the weight loss rate is 1% or less. Examples of non-volatile oils in component (D) include silicone oil, hydrocarbon oil, ester oil, ether oil, and higher alcohols.

[0027] Examples of silicone oils include dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and higher alcohol-modified organopolysiloxane, with dimethylpolysiloxane being preferred.

[0028] Examples of hydrocarbon oils include straight-chain or branched hydrocarbon oils such as liquid paraffin, light isoparaffin, liquid isoparaffin, squalane, and squalene, with hydrogenated polyisobutene being more preferred.

[0029] Examples of ester oils include monoester oils, diester oils, and triester oils, with octyldodecyl myristate, diisostearyl malate, neopentyl glycol dicaprate, isotridecyl isononanoate, isononyl isononanoate, dipentaerythrityl tetraisostearate, phytosteryl / octyldodecyl lauroyl glutamate, octyl paramethoxycinnamate, caprylic / capric triglyceride, triethylhexanoin, ethylhexyl hydroxystearate, propylene carbonate, jojoba oil, and partially hydrogenated jojoba oil, with isononyl isononanoate and octyl paramethoxycinnamate being preferred.

[0030] The higher alcohol is preferably one or more selected from higher alcohols having 16 to 24 carbon atoms and a branched structure. Examples include decyltetradecanol, octyldodecanol, isostearyl alcohol, hexyldecanol, oleyl alcohol, etc., with octyldodecanol being preferred.

[0031] Ingredient (D) preferably contains at least silicone oil, from the viewpoint of achieving a smooth, non-drying finish on the skin after application.

[0032] Component (D) can be used alone or in combination of two or more types. The content is preferably 4% by mass or more, preferably 5% by mass or more, preferably 16% by mass or less, preferably 15% by mass or less, and more preferably 14% by mass or less, from the viewpoint of ensuring that the stirring ball moves easily when the container is shaken during use, that the appearance of the discharged liquid after stirring is excellent, and that the skin feels smooth and dry after application. Furthermore, the content of component (D) is 4 to 16% by mass of the total composition, preferably 4 to 15% by mass, and more preferably 5 to 14% by mass.

[0033] In the present invention, the mass ratio (A) / (D) of component (A) to component (D) is preferably 0.2 or higher, more preferably 0.3 or higher, even more preferably 0.4 or higher, preferably 4 or lower, more preferably 3 or lower, even more preferably 2.3 or lower, and even more preferably 2 or lower, from the viewpoint of obtaining a finish where the stirring ball moves easily when the container is shaken during use, the appearance of the discharged liquid is excellent, and the skin feels smooth and dry after application.

[0034] The emulsified cosmetic composition of the present invention may further contain a nonionic surfactant, which can improve the agitation properties of the emulsified cosmetic composition. Nonionic surfactants can be any surfactant commonly used in cosmetics, such as sorbitan fatty acid esters including sorbitan monoisostearate, sorbitan monooleate, sorbitan sesquistearate, and sorbitan sesquioleate; glycerin fatty acid esters, diglycerin fatty acid esters, propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyethylene glycol fatty acid esters, alkyl glyceryl ethers, alkyl polyglyceryl ethers, polyoxyethylene alkyl ethers, polyoxyethylene alkyl ether fatty acid esters, polyoxyethylene alkylamines, and polyether-modified silicones such as polyoxyethylene methylpolysiloxane copolymers and poly(oxyethylene oxypropylene) methylpolysiloxane copolymers; and silicone-based surfactants such as polyglycerin-modified silicones, alkyl-modified polyether-modified silicones, and alkyl chain-comodified polyether-modified silicones. Of these, it is preferable to include a silicone-based surfactant, and more preferable to include a polyether-modified silicone, from the viewpoint of allowing the stirring ball to move easily when the container is shaken during use, providing good stirring performance, and ensuring excellent uniformity of the appearance of the discharged liquid after stirring.

[0035] Furthermore, from the viewpoint of enhancing the dispersion and solubility of water and water-soluble components in oil, lipophilic nonionic surfactants are preferred, with an HLB value of 1 to 8, more preferably 2 to 7, and even more preferably 3 to 6. Here, HLB (Hydrophilic-Lipophilic Balance) represents the molecular weight of the hydrophilic portion of the total molecular weight of a surfactant, and is determined by Griffin's formula. Furthermore, when a mixture of two or more nonionic surfactants is composed of a mixture, the HLB of the mixture is determined as follows: The HLB of the mixture is obtained by averaging the HLB values ​​of each nonionic surfactant based on their respective blending ratios. Mixed HLB=Σ(HLBx×Wx) / ΣWx HLBx indicates the HLB value of the nonionic surfactant X. Wx represents the mass (g) of the nonionic surfactant X having an HLBx value.

[0036] As nonionic surfactants, commercially available products can be used. For example, as sorbitan monoisostearate, Span 120-LQ (HLB 4.7) (manufactured by Croda), etc.; as polyoxyethylene methylpolysiloxane copolymers, KF-6015 (HLB 4.5), KF-6017 (HLB 4.5), KF-6028 (HLB 4) (all manufactured by Shin-Etsu Chemical Co., Ltd.), SH3775M (HLB 5) (manufactured by Toray Dow Corning), etc.; as poly(oxyethylene oxypropylene) methylpolysiloxane copolymers, KF-6012 (HLB 7) (manufactured by Shin-Etsu Chemical Co., Ltd.), DOWSIL BY 22-008 M (HLB 2), DOWSIL Examples of alkyl-modified polyether-modified silicones include ES-5226 (HLB2) (manufactured by Toray Dow Corning), KF-6038 (HLB3) (manufactured by Shin-Etsu Chemical Co., Ltd.), and ABIL EM 90 (HLB5) (manufactured by Evonik).

[0037] One or more nonionic surfactants may be used. From the viewpoint of ensuring that the stirring ball moves easily when the container is shaken during use, that the agitation is good, and that the appearance of the discharged liquid after stirring is excellent, the content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.5% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. Furthermore, the content of the nonionic surfactant is preferably 0.1 to 5% by mass of the total composition, more preferably 0.2 to 3% by mass, and even more preferably 0.5 to 2% by mass.

[0038] The emulsified cosmetic composition of the present invention may further contain a coloring pigment. As coloring pigments, these are those commonly used in cosmetics, such as metal oxides like titanium dioxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes like manganese violet and cobalt titanate; and inorganic pigments like carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220. Examples of synthetic organic pigments include Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404; natural organic pigments such as β-carotene, caramel, and paprika pigment; and composite pigments of these coloring pigments, as well as composite pigments combining these coloring pigments with pearl pigments. Examples of pearl pigments to be processed include natural or synthetic inorganic powders such as mica, phlogopite, talc, silica, sericite, glass, kaolin, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, and plate-shaped alumina powder. Specific examples of composite pigments include titanium dioxide-coated mica, iron oxide-coated mica, iron oxide-coated titanium mica, iron oxide-coated synthetic fluorphlogopite, chromium oxide-coated titanium mica, titanium dioxide-coated glass powder, iron oxide-coated glass powder, titanium dioxide-encapsulated glass powder, and iron oxide-encapsulated glass powder. Of these, metal oxides are preferred, more preferably containing at least one or more selected from titanium dioxide, yellow iron oxide, black iron oxide, and red iron oxide, and even more preferably containing at least one or more selected from titanium dioxide, yellow iron oxide, black iron oxide, and red iron oxide.

[0039] These coloring pigments can be used as is, or, like component (A), they can be hydrophobized before use.

[0040] One or more coloring pigments may be used, and from the viewpoint of achieving a beautiful makeup finish on the skin, the content is preferably 0.1 to 30% by mass, more preferably 1 to 20% by mass, even more preferably 2 to 15% by mass, and still more preferably 3 to 8% by mass.

[0041] The emulsified cosmetic composition of the present invention may further contain extender pigments. Examples of extender pigments include those commonly used in cosmetics, such as inorganic extender pigments and composite powders thereof, including magnesium silicate, aluminum silicate, talc, sericite, mica, synthetic fluorophlogopite, glass powder, fluorphlogopite, kaolin, clay, bentonite, hectorite, zeolite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, and magnesium carbonate. These extender pigments can be used as is, or, like component (A), they can be hydrophobized before use.

[0042] One or more types of extender pigments may be used, and from the viewpoint of excellent feel and finish, the content is preferably 0.1 to 20% by mass of the total composition, more preferably 0.5 to 10% by mass, and even more preferably 1 to 5% by mass.

[0043] In the emulsified cosmetic composition of the present invention, the water content is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 17% by mass or more, preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 33% by mass or less, from the viewpoint of maintaining the emulsified form and having excellent usability. Furthermore, the water content is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and even more preferably 17 to 33% by mass, from the viewpoint of maintaining the emulsified form and having excellent usability.

[0044] In addition to the above-mentioned components, the emulsified cosmetic composition of the present invention may contain components commonly used in cosmetics, such as powders other than those mentioned above, oily components other than component (D), polymer compounds other than component (C), antioxidants, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, cooling agents, and the like. From the viewpoint of being environmentally friendly and having excellent usability, the emulsified cosmetic composition of the present invention preferably contains 1% by mass or less of organic resin powder in the total composition, more preferably 0.1% by mass or less, and even more preferably substantially free of organic resin powder. Furthermore, the content of spherical organic resin powder is preferably 1% by mass or less in the total composition, more preferably 0.1% by mass or less, and even more preferably substantially absent. Examples of organic resin powders include crosslinked or non-crosslinked organic resin powders such as powders of one or more polymers or copolymers selected from polyamide resin, nylon resin, polyester resin, polyethylene resin, polytetrafluoroethylene resin, polypropylene resin, polystyrene resin, benzoguanamine resin, polymethylbenzoguanamine resin, polyurethane resin, vinyl resin, fluororesin, acrylic resin, melamine resin; butyl acrylate / vinyl acetate copolymer, styrene / acrylic acid copolymer, silicone resin, and divinylbenzene / styrene copolymer.

[0045] The emulsified cosmetic composition of the present invention can be manufactured according to conventional methods and can be in the form of liquid, emulsion, paste, cream, gel, solid, or other dosage forms.

[0046] The emulsified cosmetic composition of the present invention may be either a water-in-oil emulsion or an oil-in-water emulsion, but is preferably a water-in-oil emulsion. Furthermore, the emulsified cosmetic composition of the present invention can be used as, for example, makeup cosmetics such as makeup base, foundation, concealer, blush, eyeshadow, mascara, eyeliner, eyebrow products, overcoat agents, and lipstick; as well as UV protection cosmetics such as sunscreen lotion and sunscreen cream. It is particularly suitable as a makeup cosmetic, and more so as a makeup base. [Examples]

[0047] Examples 1-10 and Comparative Examples 1-2 Water-in-oil emulsion cosmetics (primer cosmetics) with the compositions shown in Table 1 were prepared, and the ease of movement of the stirring ball when the container was shaken, the uniformity of the appearance of the discharged liquid after stirring, and the smooth, non-drying finish after application were evaluated. The results are also shown in Table 1.

[0048] (Manufacturing method) The powder components containing components (A) and (B) were mixed and ground, and then added to the oil phase components containing separately mixed components (C) and (D), and dispersed in a disperser. Subsequently, the aqueous phase components were added, dispersed in a disperser, and then stirred with a homomixer to obtain a water-in-oil emulsion cosmetic (primer cosmetic).

[0049] (Evaluation method) (1) Ease of movement of the stirring ball when the container is shaken: Five expert panelists filled each water-in-oil emulsion cosmetic (primer) into squeeze-dispensing bottles (with inner stoppers and one stainless steel stirring ball). After standing for one day, they evaluated the ease with which the stirring ball moved when the container was shaken, according to the following criteria. The results are shown as the average score of the five panelists. 3; The stirring balls move easily. 2; The stirring ball is difficult to move. 1; The stirring ball is not moving.

[0050] (2) Uniformity of the appearance of the discharged liquid after stirring: Five expert panelists filled each water-in-oil emulsion cosmetic (primer cosmetic) into squeeze-dispensing bottles (with inner stoppers and one stainless steel stirring ball). After standing for one day, they visually observed the appearance of the dispensed liquid after shaking the containers and evaluated it according to the following criteria. The results are shown as the average score of the five panelists. 3; Uniform. 2; The transparent layer is slightly blurred. 1; Completely separated.

[0051] (3) Smooth feeling after application: Five expert panelists conducted a sensory evaluation of the feel of each water-in-oil emulsion cosmetic (primer) on the skin after application, using the following criteria. The results are shown as the total score from the five panelists. 5; It leaves the skin feeling very smooth. 4; Leaves skin feeling smooth and dry. 3; Leaves the skin feeling slightly dry and smooth. 2; It doesn't leave the skin feeling very smooth. 1; It doesn't leave the skin feeling smooth.

[0052] (4) A finish that does not feel dry: Five expert panelists conducted a sensory evaluation of the finish of makeup after applying each water-in-oil emulsion cosmetic (primer) according to the following criteria. The results are shown as the total score from the five panelists. 5; I don't feel any dryness. 4. I don't feel much dryness. 3; I feel a slight dryness. 2; I feel dryness. 1. I feel a significant dryness.

[0053] [Table 1]

[0054] Examples 11-13 Water-in-oil emulsion cosmetics (primer cosmetics) with the compositions shown in Table 2 were prepared in the same manner as in Examples 1 to 10. The resulting water-in-oil emulsion cosmetic (primer cosmetic) exhibits excellent agitation, with the stirring ball moving easily when the container is shaken, a uniform appearance of the dispensed liquid after stirring, and a smooth, non-drying finish on the skin after application.

[0055] [Table 2]

Claims

1. The following components (A), (B), (C), and (D): (A) Specific surface area 60m ２ Silica with a volume-average particle size of 1 to 50 μm and a concentration of 0.1 to 25% by mass, (B) Zinc oxide 1 to 30% by mass, (C) Silicone-based film-forming agent 0.1 to 10% by mass, (D) Non-volatile oil that is liquid at 25°C: 4-16% by mass Emulsified cosmetic containing [a specific ingredient].

2. The emulsified cosmetic composition according to claim 1, wherein component (A) has been hydrophobized.

3. The emulsified cosmetic composition according to claim 1 or 2, wherein component (C) is one or more selected from trimethylsiloxysilicate and acrylic silicone resin.

4. The emulsified cosmetic composition according to any one of claims 1 to 3, wherein component (D) comprises at least silicone oil.

5. An emulsified cosmetic composition according to any one of claims 1 to 4, wherein the mass ratio (A) / (D) of component (A) to component (D) is 0.2 to 4.

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