Emulsified cosmetics

Abstract

To provide an emulsified cosmetic that does not cause dullness on the skin after application and improves the appearance of pores and uneven skin texture. [Solution] The following components (A), (B), and (C): (A) Surface-coated particles in which part or all of the surface of spherical composite particles is coated with a metal oxide and anhydrous silicic acid. (B) Sorbitan fatty acid ester (C) Liquid oil component at 25℃ Emulsified cosmetic containing [a specific ingredient].

Description

Technical Field

[0001] The present invention relates to emulsified cosmetics.

Background Art

[0002] Conventionally, emulsified cosmetics have been used as makeup bases, foundations, sunscreens, etc. Among these, sunscreens often contain organic ultraviolet absorbers, anhydrous silicic acid, and volatile silicones (for example, Patent Document 1). In addition, in makeup cosmetics such as makeup bases and foundations, for example, in addition to organic ultraviolet absorbers and / or metal oxides, powdery anhydrous silicic acid and the like are blended (Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In conventional emulsified cosmetics, anhydrous silicic acid is blended as a powder for the purpose of controlling usability and finish on the skin as described above. However, there is a problem that the skin after application is likely to become dull and it is difficult to improve the visibility of pores and unevenness.

Means for Solving the Problems

[0005] Therefore, as a result of various studies, the present inventor has found that by using in combination surface-coated particles in which part or all of the spherical surface of composite particles is coated with metal oxide and anhydrous silicic acid, sorbitan fatty acid ester, and an oil component that is liquid at 25°C, an emulsified cosmetic excellent in uniform finish of the skin after application, improvement in pore unevenness correction, and brightness (toning effect) of the finish after application can be obtained.

[0006] One aspect of the present invention relates to the following components (A), (B), and (C): (A) Surface-coated particles in which part or all of the surface of spherical composite particles is coated with a metal oxide and anhydrous silicic acid. (B) Sorbitan fatty acid ester (C) Liquid oil component at 25℃ This relates to emulsified cosmetics containing [a specific ingredient]. [Effects of the Invention]

[0007] The emulsified cosmetic composition of the present invention is excellent in providing a uniform finish to the skin after application, improving the correction of pores and unevenness, and enhancing the brightness of the finish (tone-up effect) after application. Furthermore, it is less prone to dulling even after a long period of time and has excellent stability (lack of oil stains) during long-term storage. [Modes for carrying out the invention]

[0008] Terms used herein shall be used in the sense commonly used in the art unless otherwise specified.

[0009] In the present invention, an emulsified cosmetic refers to a cosmetic in which an aqueous phase and an oil phase are emulsified. The type of emulsification is not particularly limited, but examples include oil-in-water and water-in-oil, with water-in-oil emulsified cosmetics being preferred.

[0010] The present invention relates to an emulsified cosmetic composition, one embodiment thereof comprising the following components (A), (B), and (C): (A) Surface-coated particles in which part or all of the surface of spherical composite particles is coated with a metal oxide and anhydrous silicic acid. (B) Sorbitan fatty acid ester (C) Liquid oil component at 25℃ It is an emulsified cosmetic containing [a specific ingredient].

[0011] The emulsified cosmetic composition of the present invention contains (A) surface-coated particles in which part or all of the surface of spherical composite particles is coated with a metal oxide and anhydrous silicic acid. By including component (A), the following effects can be obtained: a uniform finish on the skin after application, improved correction of pores and unevenness, brightness of the finish after application (tone-up effect), resistance to dullness even after a long time, and excellent stability during long-term storage (no oil stains). The surface-coated particles of component (A) consist of spherical composite particles as the core (base particle), with part or all of the surface of the spherical composite particles coated with both a metal oxide and anhydrous silicic acid. In the above-mentioned spherical composite particles, "spherical" includes perfect spheres, approximately spherical shapes, and ellipsoids, and may also refer to spherical powders with uneven surfaces.

[0012] As for the spherical composite particles mentioned above, spherical particles containing a composite of two or more silicates are preferred from the viewpoint of obtaining a uniform finish on the skin after application. Examples of silicates include Group 13 metal salts of silica, such as aluminum silicate; alkali metal silicates, such as sodium silicate, potassium silicate, and lithium silicate; and alkaline earth metal silicates, such as magnesium silicate and calcium silicate. As for the composite of two or more silicates, from the viewpoint of obtaining a smooth, uniform, and bright finish when applied to the skin, composites of a group 13 metal salt of silicate and alkali metal silicate, composites of a group 13 metal salt of silicate and alkaline earth metal silicate, composites of a group 13 metal salt of silicate and alkali metal silicate and alkaline earth metal silicate, and composites of alkali metal silicate and alkaline earth metal silicate are preferred. More preferably, composites of aluminum silicate and alkali metal silicate, composites of aluminum silicate and alkaline earth metal silicate, and composites of alkali metal silicate and alkaline earth metal silicate are preferred. Even more preferably, composites of aluminum silicate and alkali metal silicate, composites of aluminum silicate and alkaline earth metal silicate are preferred, and composites of aluminum silicate and alkali metal silicate are particularly preferred. Examples of complexes of two or more silicates include potassium aluminum sodium silicate, calcium sodium aluminum silicate, lithium magnesium sodium silicate, magnesium aluminum silicate, magnesium sodium silicate, and magnesium aluminum sodium silicate. Among these, potassium aluminum sodium silicate is preferred from the viewpoint of obtaining a uniform and bright finish on the skin after application.

[0013] The average particle size of the spherical composite particles (base particles) is preferably 0.1 to 100 μm, more preferably 0.3 to 50 μm, and even more preferably 0.5 to 15 μm. In this specification, the average particle diameter of spherical composite particles (base particles) refers to the volume-based average particle diameter measured using a laser diffraction / scattering particle size distribution analyzer (e.g., LMS-350 manufactured by Seishin Corporation) with ethanol as the dispersion medium.

[0014] Examples of metal oxides used to coat the spherical composite particles together with anhydrous silicic acid include one or more metal oxides selected from titanium dioxide, zinc oxide, cerium oxide, iron oxide, and chromium oxide. Among these, one or more metal oxides selected from titanium dioxide and zinc oxide are preferred, with titanium dioxide being more preferred, from the viewpoint of effectively scattering light on the skin and achieving a bright finish.

[0015] The amount of anhydrous silicic acid coating is preferably 1 to 100 parts by mass, and more preferably 2.5 to 50 parts by mass, per 100 parts by mass of spherical composite particles. The amount of metal oxide coating is preferably 1 to 100 parts by mass, and more preferably 2.5 to 50 parts by mass, per 100 parts by mass of spherical composite particles.

[0016] As the surface-coated particles of component (A), from the viewpoint of effectively scattering light on the skin and achieving a uniform and bright finish on the skin after application, it is preferable that a part or all of the surface of spherical particles containing a composite of two or more silicates is coated with titanium oxide and silicic anhydride. More preferably, a part or all of the surface of spherical particles containing a composite of aluminum silicate and an alkali metal silicate is coated with titanium oxide and silicic anhydride. Particularly preferably, a part or all of the surface of spherical particles containing sodium potassium aluminum silicate is coated with titanium oxide and silicic anhydride.

[0017] As the average particle diameter of the surface-coated particles of component (A), from the viewpoint of entering into the unevenness and wrinkles of the skin, effectively scattering light, and achieving a uniform and bright finish without unevenness, 0.1 to 100 μm is preferable, 0.2 to 60 μm is more preferable, and 0.5 to 25 μm is even more preferable. The average particle diameter of the surface-coated particles of component (A) shall be the volume-based average particle diameter measured in the same manner as the average particle diameter of the spherical composite particles (base material particles).

[0018] Examples of commercially available products of the surface-coated particles of component (A) include RONAFLAIR LDP WHITE (manufactured by Merck).

[0019] The surface-coated particles of component (A) may be used alone or in combination of two or more.

[0020] Regarding the content of component (A), from the viewpoint of smoothness of the skin during application, adherence to the skin after application, and obtaining a uniform and bright finish without unevenness when applied to the skin, it is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and also preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and even more preferably 2% by mass or less, based on the total mass of the emulsified cosmetic composition of the present invention. Specifically, the range is preferably 0.02% by mass or more and 15% by mass or less, more preferably 0.05% by mass or more and 10% by mass or less, even more preferably 0.05% by mass or more and 5% by mass or less, and even more preferably 0.1% by mass or more and 2% by mass or less, based on the total mass of the emulsified cosmetic composition of the present invention.

[0021] Furthermore, the mass ratio (A) / (powder) of component (A) to the total amount of powder contained in the emulsified cosmetic is preferably 0.001 or more and 0.9 or less, more preferably 0.005 or more and 0.5 or less, even more preferably 0.01 or more and 0.1 or less, and even more preferably 0.01 or more and 0.05 or less.

[0022] The component (B) used in this invention is a sorbitan fatty acid ester. As for sorbitan fatty acid esters, from the viewpoint of long-term storage stability (lack of oil stains), it is preferable that the HLB is 1 or higher, more preferably 2 or higher, even more preferably 3 or higher, preferably 10 or lower, more preferably 7 or lower, and even more preferably 6 or lower.

[0023] In this invention, HLB (Hydrophilic-Lipophilic Balance) represents the molecular weight of the hydrophilic group portion of the total molecular weight of the surfactant and is determined by Griffin's formula. Furthermore, when composed of two or more sorbitan fatty acid esters, the HLB of the mixed sorbitan fatty acid ester is determined as follows: The HLB of the mixed sorbitan fatty acid ester is obtained by averaging the HLB values ​​of each sorbitan fatty acid ester based on their blending ratio. Mixed HLB=Σ(HLBx×Wx) / ΣWx HLBx indicates the HLB value of sorbitan fatty acid ester X. Wx represents the mass (g) of sorbitan fatty acid ester X having an HLBx value.

[0024] Examples of sorbitan fatty acid esters include sorbitan monoisostearate, sorbitan monooleate, sorbitan sesquistearate, and sorbitan sesquioleate. From the viewpoint of excellent long-term storage stability and excellent glossiness of the skin after application, it is preferable to include one or more selected from sorbitan monoisostearate, sorbitan monooleate, and sorbitan sesquistearate, more preferably one or more selected from sorbitan monoisostearate and sorbitan sesquistearate, and even more preferably sorbitan monoisostearate. As commercially available sorbitan fatty acid esters for component (B), for example, Span 120 (HLB 4.7) (manufactured by Croda) can be used as sorbitan monoisostearate, NIKKOL SS-15V (HLB 4.2) as sorbitan sesquistearate, and NIKKOL SO-10V (HLB 4.3) as sorbitan monooleate (all manufactured by Nikko Chemicals Co., Ltd.).

[0025] Component (B) can be one or more types, and its content is preferably 0.001% by mass or more, more preferably 0.1% by mass or more, even more preferably 1% by mass or more, preferably 10% by mass or less, more preferably 7% by mass or less, and even more preferably 4% by mass or less, based on the total mass of the emulsified cosmetic. Furthermore, the content of component (B) is preferably 0.001 to 10% by mass, more preferably 0.1 to 7% by mass, and even more preferably 1 to 4% by mass, based on the total mass of the emulsified cosmetic.

[0026] The mass ratio of component (A) to component (B) ((A) / (B)) is preferably 0.03 or higher, more preferably 0.05 or higher, even more preferably 0.1 or higher, and also preferably 2 or lower, more preferably 1 or lower, and even more preferably 0.5 or lower, from the viewpoint of smoothness of the skin during application, adherence to the skin after application, even and uniform and bright finish obtained when applied to the skin, and excellent long-term storage stability (no oil stains), as well as excellent glossiness of the skin after application.

[0027] Component (C) of the present invention is an oil component that is liquid at 25°C. "Liquid at 25°C" means that it has fluidity at 25°C, and this includes creamy and pastey substances. Any oil component that is liquid at 25°C can be one that is commonly used in cosmetics, such as hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols. Examples of hydrocarbon oils include straight-chain or branched-chain hydrocarbon oils such as liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, squalane, and squalene.

[0028] Examples of ester oils include monoester oils, diester oils, triester oils, and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic acids or dicarboxylic acids having 2 to 24 carbon atoms. Specific examples include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, palmitate Examples include butyl 2-hexyldecyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, alkyl benzoates (C12-C15), and octyldodecyl 12-stearoyl stearate.

[0029] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms, and di-fatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monomyristate monoisostearate, glyceryl di2-heptylundecanoate, di2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, and di-2-ethylhexyl sebacate.

[0030] Examples of triester oils include tri-fatty acid esters of polyhydric alcohols with a valency of 3 or higher. Specifically, these include glycerin trimyristate, glycerin triisopalmitate, glycerin tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric acid)glycerin, glycerin trioleate, glycerin tri-2-ethylhexanoate, glycerin triisostearate, olive oil, jojoba oil, and the like.

[0031] Examples of tetraester oils include tetra fatty acid esters of polyhydric alcohols with four or more valencies, specifically tetra(behenic acid / benzoic acid / ethylhexanoic acid) pentaerythritol, tetraethylhexanoate pentaerythritol, tetraoctanoate pentaerythritol, and tetra-2-ethylhexanoate pentaerythritol.

[0032] Examples of ether oils include dialkyl ethers, specifically dihexyl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.

[0033] Examples of silicone oils include cross-linked methylpolysiloxane, network methylpolysiloxane, dimethylpolysiloxane, methyl trimethicone, dimethylcyclopolysiloxane, higher alcohol-modified organopolysiloxane, and phenyl-modified silicone, with the inclusion of phenyl-modified silicone being preferable. Examples of phenyl-modified silicones that are liquid at 25°C include phenyl trimethicone, diphenylsiloxyphenyl trimethicone, diphenyl dimethicone, trimethylsiloxyphenyl dimethicone, trimethylpentaphenyltrisiloxysane, methylphenylpolysiloxane, and dimethicone diethyl benzalmalonate, with phenyl trimethicone and methylphenylpolysiloxane being preferred, and the inclusion of at least methylphenylpolysiloxane being more preferable.

[0034] Examples of higher alcohols include those having linear or branched alkyl or alkenyl groups with 10 to 24 carbon atoms, such as lauryl alcohol, myristyl alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyldodecanol, and oleyl alcohol.

[0035] Component (C) can be one or more types, and its content is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, preferably 50% by mass or less, more preferably 35% by mass or less, and even more preferably 30% by mass or less, based on the total mass of the emulsified cosmetic. Furthermore, the content of component (C) is preferably 5 to 50% by mass, more preferably 10 to 35% by mass, and even more preferably 15 to 30% by mass, based on the total mass of the emulsified cosmetic.

[0036] In the emulsified cosmetic composition of the present invention, it is preferable to include (D) a glycerin fatty acid ester that is solid at 25°C, in order to maintain the viscosity of the emulsified cosmetic composition, improve long-term storage stability (lack of oil stains), prevent dullness even after a long period of time, and improve the uniform finish of the skin after application. "Solid at 25°C" means that a substance exhibits semi-solid to solid properties at 25°C. As a glycerol fatty acid ester that is solid at 25°C, triesters are preferred, triglycerides of fatty acids having 20 to 28 carbon atoms are more preferred, triglycerides of fatty acids having 20 to 24 carbon atoms are even more preferred, and it is even more preferable that it contains at least tribehenin.

[0037] Component (D) can be one or more types, and its content is preferably 0.05% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.6% by mass or more, preferably 10% by mass or less, more preferably 7% by mass or less, and even more preferably 3% by mass or less, based on the total mass of the emulsified cosmetic. In addition, the content of component (C) is preferably 0.05 to 10% by mass, more preferably 0.2 to 7% by mass, and even more preferably 0.6 to 3% by mass, based on the total mass of the emulsified cosmetic.

[0038] The mass ratio of component (A) to component (D) ((A) / (D)) is preferably 0.06 or higher, more preferably 0.1 or higher, even more preferably 0.2 or higher, and also preferably 4 or lower, more preferably 2 or lower, and even more preferably 1 or lower, from the viewpoint of maintaining the viscosity of the emulsified cosmetic, improving long-term storage stability (lack of oil stains), preventing dullness even after a long time, and improving the uniform finish of the skin after application. Specifically, 0.06 to 4 is preferred, 0.1 to 2 is more preferred, and 0.2 to 1 is even more preferred.

[0039] The cosmetic composition of the present invention is an emulsified cosmetic composition, and as described above, it may be either a water-in-oil emulsion cosmetic composition or a water emulsion cosmetic composition, but it is preferably a water-in-oil emulsion cosmetic composition. Regarding the water content in the emulsified cosmetic of the present invention, from the viewpoint of providing excellent freshness and spreadability on the skin during application, it is preferably 5% by mass or more, more preferably 15% by mass or more, even more preferably 20% by mass or more, and also preferably 60% by mass or less, more preferably 50% by mass or less, and even more preferably 40% by mass or less, based on the total mass of the emulsified cosmetic of the present invention. Specifically, the range is preferably 15% by mass or more and 60% by mass or less, more preferably 15% by mass or more and 50% by mass or less, and even more preferably 20% by mass or more and 40% by mass or less, based on the total mass of the emulsified cosmetic of the present invention.

[0040] The emulsified cosmetic composition of the present invention includes powders other than component (A), organic ultraviolet absorbers, nonionic surfactants other than component (B), polyhydric alcohols, water-soluble polymers, antioxidants, fragrances, preservatives, thickeners, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, cooling agents, and the like. These may be used individually or in combination of two or more.

[0041] Powders other than component (A) can be broadly classified into extender pigments, coloring pigments, and luminous pigments. Examples of extender pigments include inorganic pigments such as silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, boron nitride, mica, synthetic mica, glass flakes, synthetic fluorphlogopite, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, magnesium silicate, silica, alumina, and composite pigments thereof. Specific examples of composite pigments include titanium dioxide-coated mica, zinc oxide-coated mica, titanium dioxide-zinc oxide-coated mica, iron oxide-coated mica, iron oxide-coated titanium mica, barium sulfate-titanium dioxide-coated 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. Examples of coloring pigments include metal oxides such as titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; synthetic organic pigments such as Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, 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, and Blue No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment. As luminous pigments, the surface of plate-like powders such as mica, synthetic fluorphlogopite, glass, silica, and alumina is coated with colorants such as titanium dioxide, iron oxide, silicon dioxide, Prussian blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, and organic pigments. In addition, film rolls such as polyethylene terephthalate / polymethyl methacrylate laminated powder, polyethylene terephthalate / aluminum vapor-deposited powder, and polyethylene terephthalate / gold vapor-deposited laminated powder can be cut into any shape. These powders can be used as is, or they can be hydrophobized using conventional methods. Examples of hydrophobic treatments include surface treatments such as silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, inorganic compound treatment, acylated amino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylate resin treatment, and urethane resin treatment.

[0042] The powders other than component (A) may be used individually or in combination of two or more types. Regarding the content of powders other than component (A), from the viewpoint of enhancing skin coverage, coloring ability, and aesthetics, it is preferable that the content be 0% to 40% by mass, more preferably 5% to 35% by mass, and even more preferably 10% to 30% by mass, relative to the total mass of the emulsified cosmetic composition of the present invention.

[0043] The mass ratio of component (A) to the total amount of powder ((A) / total amount of powder) is preferably 0.001 to 0.3, more preferably 0.003 to 0.2, even more preferably 0.005 to 0.1, and most preferably 0.01 to 0.05, from the viewpoint of maintaining the viscosity of the emulsified cosmetic, improving long-term storage stability (non-oily staining), preventing dullness even after a long time, and improving the uniform finish of the skin after application.

[0044] Examples of nonionic surfactants other than component (B) include silicone-based surfactants, glycerin fatty acid ester type surfactants, diglycerin fatty acid ester type surfactants, polyglycerin fatty acid ester type surfactants, propylene glycol fatty acid ester type surfactants, polyethylene glycol fatty acid ester type surfactants, polyoxyethylene castor oil type surfactants, polyoxyethylene hydrogenated castor oil type surfactants, polyoxyethylene hydrogenated castor oil fatty acid ester type surfactants, alkyl glyceryl ether type surfactants, alkyl polyglyceryl ether type surfactants, polyoxyethylene alkyl ether type surfactants, polyoxyethylene alkyl ether fatty acid ester type surfactants, and polyoxyethylene alkylamine type surfactants. Among these, silicone-based surfactants are preferred from the viewpoint of providing moisture to the skin during application. The content of nonionic surfactants other than component (B) is preferably 0% by mass or more, more preferably 0.01% by mass or more, more preferably 2% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less, based on the total mass of the emulsified cosmetic, from the viewpoint of excellent long-term storage stability (lack of oil stains) and excellent glossiness of the skin after application. Furthermore, the content of component (C) is preferably 0 to 2% by mass, more preferably 0 to 0.5% by mass, and even more preferably 0.01 to 0.1% by mass, based on the total mass of the emulsified cosmetic.

[0045] Examples of the polyhydric alcohols mentioned above include glycols, glycerols, polyoxyalkylene methyl glucose compounds, as well as sorbitol, maltitol, sorbitan, glucose, fructose, sucrose, and maltose. Examples of glycols include alkylene glycols such as ethylene glycol, propylene glycol, and 1,3-butylene glycol; and polyalkylene glycols such as diethylene glycol, dipropylene glycol, and polyethylene glycol. Examples of glycerin include glycerin, diglycerin, and polyglycerin. Examples of polyoxyalkylene methyl glucose include polyoxyethylene methyl glucose and polyoxypropylene methyl glucose. Polyhydric alcohols may be used individually or in combination of two or more types. Regarding the polyhydric alcohol content, from the viewpoint of obtaining a moist feeling on the skin during application, it is preferable that it be 1% to 35% by mass, more preferably 5% to 30% by mass, and even more preferably 10% to 25% by mass, based on the total mass of the emulsified cosmetic composition of the present invention.

[0046] In the present invention, the water content is preferably 10 to 50% by mass of the total composition, more preferably 20 to 40% by mass, and even more preferably 23 to 37% by mass, from the viewpoint of obtaining a fresh feeling on the skin during application.

[0047] As for the emulsified cosmetic composition of the present invention, from the viewpoint of environmental considerations and excellent usability, it is preferable that the content of organic resin powder such as microplastics is 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably substantially free of organic resin powder. Specifically, such organic resin powders refer to organic resin powders other than cellulose powder that have excellent biodegradability. 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, butyl acrylate / vinyl acetate copolymer, styrene / acrylic acid copolymer, silicone resin, and divinylbenzene / styrene copolymer.

[0048] The emulsified cosmetic composition of the present invention can be manufactured by conventional methods. For example, it can be manufactured by adding a powder phase containing component (A) to an oil phase containing components (B) and (C), and optionally (D), dispersing the mixture, and then adding an aqueous phase component and stirring. Furthermore, the emulsified cosmetic composition of the present invention, which can be manufactured in this manner, provides a uniform finish to the skin after application, improved correction of pores and unevenness, a brighter finish (tone-up effect) after application, resistance to dullness even after a long period of time, and excellent stability during long-term storage (no oil stains).

[0049] The emulsified cosmetic composition of the present invention is suitable for use on the skin, more suitable for application to skin excluding the scalp, and even more suitable for application to one or more areas selected from the face, body, and hands and feet. Furthermore, while the method of application is not particularly limited, it is preferable to apply it with hands or with tools such as sponges or puffs.

[0050] The dosage forms of the emulsified cosmetic composition of the present invention include non-solid forms such as liquid, emulsion, cream, paste, and gel, with emulsion and cream forms being preferred. Furthermore, the emulsified cosmetic composition of the present invention can be used for makeup cosmetics such as makeup base, foundation (e.g., liquid foundation, cream foundation), concealer, blush, eyeshadow, mascara, eyeliner, eyebrow products, overcoat agents, and lipstick; sunscreen cosmetics such as sunscreen lotion and sunscreen cream; and skincare cosmetics such as skincare lotion, skincare cream, BB cream, and serum. Among these, the emulsified cosmetic composition of the present invention is suitable for use as makeup cosmetics and sunscreen cosmetics, more suitable for use as makeup cosmetics, and particularly suitable for use as makeup base and foundation. The emulsified cosmetic composition of the present invention may be used alone, or it may be used in combination with powder cosmetics such as powder foundation or face powder, or with other liquid foundations. [Examples]

[0051] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. It's not that.

[0052] Synthesis Example 1 3.63 g (0.036 mol) of 2-ethyl-2-oxazoline and 8.46 g of ethyl acetate were mixed, and the mixture was dehydrated with 0.6 g of molecular sieve (Zeolam A-4, manufactured by Tosoh Corporation) at 28°C for 15 hours. Furthermore, 100 g of side-chain primary aminopropyl-modified polydimethylsiloxane (KF-8015, manufactured by Shin-Etsu Silicone Co., Ltd., weight-average molecular weight 100,000, amine equivalent 20,000) and 203 g of ethyl acetate were mixed, and the mixture was dehydrated with 15.2 g of molecular sieve at 28°C for 15 hours. To an ethyl acetate solution of the above-mentioned dehydrated 2-ethyl-2-oxazoline, 0.54 g (0.0035 mol) of diethyl sulfate was added, and the mixture was heated under reflux at 80°C for 8 hours under a nitrogen atmosphere to synthesize terminally reactive poly(N-propionylethyleneimine). The number-average molecular weight measured by GPC was 1200. This terminally reactive poly(N-propionylethyleneimine) solution was added all at once to the dehydrated side-chain primary aminopropyl-modified polydimethylsiloxane solution, and the mixture was heated under reflux at 80°C for 10 hours. The reaction mixture was concentrated under reduced pressure to obtain the N-propionylethyleneimine-dimethylsiloxane copolymer as a white, rubbery solid (102 g). The mass ratio of organopolysiloxane segments in the final product was 0.96, and the weight-average molecular weight of the final product was 104,000.

[0053] Examples 1-7, Comparative Examples 1-3 Water-in-oil emulsion cosmetics (liquid foundations) with the compositions shown in Tables 1 and 2 were manufactured, and their uniform finish after application, improved correction of pores and unevenness after application, brightness of the finish after application (tone-up effect), absence of dullness after 6 hours, and stability (absence of oil stains) after storage at 25°C for 1 month were evaluated. The results are also shown in Tables 1 and 2.

[0054] (Manufacturing method) Each water-in-oil emulsion cosmetic (liquid foundation) was obtained by adding a powder phase component containing component (A) to an oil phase component containing components (B), (C), and (D) in Table 1, mixing them, then adding an aqueous phase component, and stirring with a homomixer.

[0055] (Evaluation method) Five expert panelists evaluated each water-in-oil emulsion cosmetic (liquid foundation) applied to the skin with a sponge, assessing factors such as the uniform finish after application, improvement in pore and unevenness correction, brightness of the finish (tone-up effect), lack of dullness after 6 hours, and stability (lack of oil stains) after 1 month of storage at 25°C. The evaluation results are shown in Tables 1 and 2, based on the combined scores of the five panelists. A higher combined score indicates a better evaluation.

[0056] (1) Uniform finish after application 5; It is fairly uniform. 4; Uniform 3; Somewhat uniform 2; not very uniform 1; not uniform

[0057] (2) Improved correction of pore unevenness after application 5; Pores are less noticeable. 4; Pores are not very noticeable. 3; Pores are slightly noticeable. 2; noticeable unevenness of pores 1; The unevenness of the pores is quite noticeable.

[0058] (3) Brightness of the finished result after application (tone-up effect) 5; Skin looks much brighter 4; Makes skin look brighter 3; Skin appears slightly brighter. 2; Skin doesn't look very bright 1; Skin doesn't look brighter

[0059] (4) No dullness after 6 hours 5; Does not appear dull 4; Doesn't look too dull 3; Appears slightly dull. 2; appears dull 1; It looks quite dull.

[0060] (5) Stability after storage at 25°C for one month (no oil stains) 5; No oil stains at all 4; No oil stains 3; Slightly oily 2; There are oil stains. 1; Oil is visibly seeping out.

[0061] [Table 1]

[0062] [Table 2]

[0063] Example 8 An oil-in-water emulsion cosmetic (liquid foundation) with the composition shown in Table 3 was prepared in the same manner as in Example 1.

[0064] [Table 3]

Claims

1. The following components (A), (B), and (C): (A) Surface-coated particles in which part or all of the surface of spherical composite particles is coated with a metal oxide and anhydrous silicic acid. (B) Sorbitan fatty acid ester (C) Oil component that is liquid at 25°C Emulsified cosmetic containing [a specific ingredient].

2. The emulsified cosmetic composition according to claim 1, wherein the content of component (A) is 0.02 to 15% by mass, and the content of component (B) is 0.001 to 10% by mass.

3. The emulsified cosmetic composition according to claim 1, wherein the spherical composite particles in component (A) are a composite of aluminum silicate and alkali metal silicate.

4. The emulsified cosmetic composition according to claim 1, wherein the metal oxide in component (A) is titanium dioxide.

5. The emulsified cosmetic composition according to claim 1, wherein the mass ratio of component (A) to component (B) ((A) / (B)) is 0.03 to 2.

6. Furthermore, the emulsified cosmetic composition according to claim 1, further containing (D) 0.05 to 10% by mass of a glycerin fatty acid ester that is solid at 25°C.

7. The emulsified cosmetic composition according to claim 1, which is a water-in-oil type emulsified cosmetic composition.

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