Powdered cosmetics

Abstract

This product provides a powder cosmetic that is smooth when applied to the skin, adheres well to the skin, has a moist feel, leaves no white cast, brightens skin tone, improves the appearance of uneven skin texture, and provides an even finish. [Solution] The following components (A), (B), (C), and (D): (A) One or more extender pigments selected from sericite, talc, synthetic mica, mica, and boron nitride, coated with silicone elastomer, 40% by mass or more. (B) Silicone elastomer, (C) Liquid oil component at 25℃, (D) One or more extender pigments selected from carbonates, anhydrous silicic acid, sulfates, alumina, and glass powder. A powder cosmetic containing [a specific ingredient].

Description

Technical Field

[0001] The present invention relates to powdered cosmetics.

Background Art

[0002] Silicone elastomers have a soft feel and elasticity, and it has been studied to improve the feel of cosmetics by coating powders with them. For example, Patent Document 1 describes a solid powder cosmetic in which a extender pigment coated with a silicone elastomer, a silicone elastomer, a liquid oil in which the silicone elastomer can be dispersed, and a coloring pigment are used in a specific ratio, which can take an optimal amount during use, has excellent spreadability when applied to the skin, has a smooth and soft feel, has no white streaks after application, can cover evenly, and has no film feeling on the skin.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventor of the present invention has found that conventional cosmetics have problems such as being unable to cover dullness and unevenness of the skin, and the finish looking uneven.

Means for Solving the Problems

[0005] The inventors have discovered that by using a combination of a specific extender pigment coated with a silicone elastomer, an extender pigment selected from carbonates, anhydrous silicic acid, sulfates, alumina, and glass powder, a silicone elastomer, and a liquid oil, it is possible to obtain a powder cosmetic that is smooth when applied to the skin, adheres well to the skin, has a moist feel, does not leave a white cast, improves the skin tone-up effect and the appearance of skin irregularities, and provides a uniform finish.

[0006] The present invention comprises the following components (A), (B), (C), and (D): (A) One or more extender pigments selected from sericite, talc, synthetic mica, mica, and boron nitride, coated with silicone elastomer, 40% by mass or more. (B) Silicone elastomer, (C) Liquid oil component at 25℃, (D) One or more extender pigments selected from carbonates, anhydrous silicic acid, sulfates, alumina, and glass powder. This relates to powdered cosmetics containing [a specific ingredient]. [Effects of the Invention]

[0007] The powder cosmetic of the present invention is smooth when applied to the skin, adheres well to the skin, has a moist feel, leaves no white cast, improves skin tone, reduces the appearance of uneven skin texture, and provides an even finish. [Modes for carrying out the invention]

[0008] The component (A) used in the present invention is an extender pigment selected from sericite, talc, synthetic mica, mica, and boron nitride, coated with a silicone elastomer. Examples of silicone elastomers for coating extender pigments include cross-linked polyether-modified silicones and cross-linked polyglycerin-modified silicones. Crosslinked polyether-modified silicones are three-dimensional crosslinked products in which organopolysiloxane chains are crosslinked with polyethers. Examples of polyethers include polyoxyethylene and polyoxypropylene. Specific examples of crosslinked polyether-modified silicones include (dimethicone / (PEG-10 / 15)) crosspolymers, alkyl-comodified (PEG-15 / lauryl dimethicone) crosspolymers, and (PEG-10 / lauryl dimethicone) crosspolymers. Commercially available products include KSG-210, KSG-240, KSG-310, KSG-320, KSG-330, and KSG-340 (all manufactured by Shin-Etsu Chemical Co., Ltd.), which are swelled with silicone oil, hydrocarbon oil, ester oil, etc.

[0009] Crosslinked polyglycerin-modified silicones are three-dimensional crosslinked products in which organopolysiloxane chains are crosslinked with polyglycerin. Specific examples include (dimethicone / polyglycerin-3) crosspolymers and alkyl-comodified (lauryl dimethicone / polyglycerin-3) crosspolymers. Commercially available products include KSG-710, KSG-810, KSG-820, KSG-830, and KSG-840 (all manufactured by Shin-Etsu Chemical Co., Ltd.), which are swelled with silicone oil, hydrocarbon oil, ester oil, etc. In the present invention, as the silicone elastomer used to coat the extender pigment of component (A), a cross-linked polyether-modified silicone is preferred from the viewpoint of providing a smooth feel when applied to the skin, excellent adhesion to the skin, a moist feel, and a uniform finish.

[0010] On the other hand, the extender pigment is selected from sericite, talc, synthetic mica, mica, and boron nitride. Plate-shaped extender pigments are preferred because they provide a smooth feel when applied to the skin, excellent adhesion to the skin, a moist texture, and a uniform finish. One method for treating an extender pigment with a silicone elastomer is to surface-treat the extender pigment with a silicone elastomer dispersed in a dispersion medium containing water. This can be done, for example, according to the method described in Japanese Patent Application Publication No. 2013-139400. The amount of silicone elastomer used (coating amount) is preferably 0.1 to 20 parts by mass, and more preferably 1 to 10 parts by mass, per 100 parts by mass of extender pigment, from the viewpoint of obtaining a smooth, excellent adherence to the skin, a moist feel, and a uniform finish when applied to the skin.

[0011] The extender pigment coated with the silicone elastomer of component (A) obtained in this way preferably has an average particle size of 1 to 100 μm, more preferably 1 to 50 μm, even more preferably 2 to 30 μm, and even more preferably 3 to 20 μm, from the viewpoint of obtaining a smooth and uniform finish when applied to the skin. Furthermore, the aspect ratio of the extender pigment coated with the silicone elastomer of component (A) is preferably 2 to 120, more preferably 4 to 100, even more preferably 20 to 90, and even more preferably 40 to 80, from the viewpoint of obtaining a smooth and uniform finish when applied to the skin. In this invention, the average particle size of the powder is measured using a laser diffraction particle size distribution analyzer (Laser Micron Sizer LMS-350, manufactured by Seishin Co., Ltd.). The average particle size is the volume-based average particle size and is defined as the 50% median diameter. The average particle thickness is measured using an electron microscope and is the sum of the measured values ​​divided by the number of particles. The aspect ratio is the particle size divided by the average particle thickness.

[0012] The extender pigment coated with component (A) silicone elastomer can be used in combination of one or more types, and its content is preferably 40% by mass or more, more preferably 44% by mass or more, more preferably 48% by mass or more, more preferably 85% by mass or less, more preferably 80% by mass or less, and even more preferably 75% by mass or less, from the viewpoint of obtaining a smooth, excellent adherence to the skin, moist feel, and uniform finish when applied to the skin. Furthermore, the content of component (A) is preferably 40% by mass or more, more preferably 40 to 85% by mass, more preferably 44 to 80% by mass, and even more preferably 48 to 75% by mass, from the total composition.

[0013] The silicone elastomer of component (B) used in the present invention is a silicone and its derivative having a crosslinked structure obtained by monomer polymerization, and preferably a silicone and its derivative obtained by polymerizing or copolymerizing monomers selected from, for example, dimethicone, vinyl dimethicone, phenyl vinyl dimethicone, lauryl dimethicone, lauryl polydimethylsiloxyethyl dimethicone, etc. Specific examples include (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl vinyl dimethicone) crosspolymer, and (dimethicone / lauryl dimethicone) crosspolymer. Commercially available products include KSG-16, KSG-18A, KSG-19, and KSG-43 (all manufactured by Shin-Etsu Chemical Co., Ltd.), which are swelled with silicone oil, ester oil, etc. Additionally, (dimethicone / (PEG-10 / 15)) crosspolymer, (PEG-15 / lauryl dimethicone) crosspolymer, (PEG-10 / lauryl dimethicone) crosspolymer, (dimethicone / polyglycerin-3) crosspolymer, (lauryl dimethicone / polyglycerin-3) crosspolymer, etc., which are used as coating materials for component (A), can also be used. As for component (B), a non-emulsified silicone elastomer is preferred from the viewpoint of being smooth when applied to the skin, having excellent adhesion to the skin, suppressing white cast in the finish, and providing a uniform finish, and a less branched type is more preferred, with (dimethicone / vinyl dimethicone) crosspolymer and (dimethicone / phenyl vinyl dimethicone) crosspolymer being even more preferred.

[0014] The silicone elastomer of component (B) can be used in combination of one or more types. From the viewpoint of achieving a smooth texture when applied to the skin, excellent adhesion to the skin, suppression of white cast in the finish, and a uniform finish, the content is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 2.3% by mass or more, preferably 8% by mass or less, more preferably 6.5% by mass or less, and even more preferably 6% by mass or less. Furthermore, the content of component (B) is preferably 1 to 8% by mass of the total composition, more preferably 2 to 6.5% by mass, and even more preferably 2.3 to 6% by mass. If a commercially available silicone elastomer swollen with silicone oil, etc., is used as component (B), the amount of silicone elastomer alone will be indicated.

[0015] The component (C) used in this invention is an oil component that is liquid at 25°C. Liquid means having fluidity, and this includes paste-like substances. The oil component of component (C) can be any oil commonly used in cosmetics, such as hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols.

[0016] More specifically, examples of hydrocarbon oils include linear or branched hydrocarbon oils such as squalane, vegetable squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, and petrolatum.

[0017] Examples of ester oils include monoester oils, diester oils, triester oils, and tetraester oils. Examples of the monoester oil 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, 2-hexyldecyl palmitate, butyl 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 (C12-C15) benzoate, octyldodecyl 12-stearoyl stearate, and the like.

[0018] Examples of the diester oil include diesters of dicarboxylic acids having 3 to 18 carbon atoms, di-fatty acid esters of polyhydric alcohols, and the like. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprylate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monoisostearate monomyristate, glycerin di-2-heptylundecanoate, di-2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, di-2-ethylhexyl sebacate, and the like.

[0019] Examples of triester oils include triglycerides of polyhydric alcohols with three or more hydroxyl groups, specifically, glycerin trimyristate, glycerin triisopalmitate, glycerin tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, glycerin tri(caprylic / capric acid), glycerin trioleate, glycerin tri-2-ethylhexanoate, glycerin triisostearate, olive oil, jojoba oil, and the like.

[0020] Examples of tetraester oils include tetra-fatty acid esters of polyhydric alcohols with four or more hydroxyl groups, specifically, pentaerythritol tetra(behenic acid / benzoic acid / ethylhexanoic acid), pentaerythritol tetraethylhexanoate, pentaerythritol tetraoctanoate, pentaerythritol tetra-2-ethylhexanoate.

[0021] Examples of ether oils include dialkyl ethers, specifically, dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, and the like.

[0022] Examples of silicone oils include crosslinked methylpolysiloxanes, network methylpolysiloxanes, methylpolysiloxanes, methyltrimethicone, dimethylcyclopolysiloxanes, methylphenylpolysiloxanes such as diphenylsiloxyphenyltrimethicone, and higher alcohol-modified organopolysiloxanes. Examples of volatile silicone oils include linear methylpolysiloxanes such as methylpolysiloxane (1 cs), methylpolysiloxane (1.5 cs), methylpolysiloxane (2 cs); branched siloxanes such as methyltrimethicone, tris(trimethylsilyl)methylsilane, tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane.

[0023] 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.

[0024] As for component (C), from the viewpoint of swelling the silicone elastomer coated with component (A) and component (B), it is preferable to include one or more hydrocarbon oils, ester oils, and silicone oils that are liquid at 25°C, more preferably one or two hydrocarbon oils and ester oils that are liquid at 25°C, and even more preferably at least branched-chain hydrocarbon oils and monoester oils that are liquid at 25°C.

[0025] Component (C) can be used alone or in combination of two or more types. From the viewpoint of suppressing white cast in the finished product, improving the skin tone-up effect, and obtaining a uniform finish, the content is preferably 5% by mass or more, more preferably 9% by mass or more, even more preferably 11% by mass or more, preferably 20% by mass or less, more preferably 19% by mass or less, and even more preferably 18% by mass or less. Furthermore, the content of component (C) is preferably 5 to 20% by mass in the total composition, more preferably 9 to 19% by mass, and even more preferably 11 to 18% by mass. Furthermore, if a commercially available silicone elastomer swollen with silicone oil or the like is used as component (B), the content of the silicone or other solvent is included in component (C).

[0026] The extender pigment of component (D) is one or more selected from carbonates, anhydrous silicic acid, sulfates, alumina, and glass powder.

[0027] Of the components (D), divalent metal carbonates are preferred as carbonates, such as calcium carbonate, magnesium carbonate, and barium carbonate. Of these, it is preferable to include at least one or more selected from calcium carbonate and magnesium carbonate, with calcium carbonate being more preferable, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, and obtaining a uniform finish. Note that component (D), the carbonate, is used alone as a carbonate. When used as a surface treatment agent for powders or as a composite powder raw material, the carbonate is not present alone in the composition, and therefore the effects of the present invention cannot be obtained.

[0028] The shape of the carbonate of component (D) is not limited and may be spindle-shaped, rod-shaped, spherical, plate-shaped, needle-shaped, fibrous, petal-shaped, or any other shape. From the viewpoint of obtaining a uniform finish, the shape of the carbonate of component (D) is preferably spindle-shaped, rod-shaped, plate-shaped, needle-shaped, fibrous, or petal-shaped, more preferably spindle-shaped, plate-shaped, spherical, needle-shaped, or fibrous, and even more preferably spindle-shaped, plate-shaped, or spherical.

[0029] Furthermore, the volume-average particle size of the carbonate is preferably 0.1 to 50 μm, more preferably 1 to 30 μm, and even more preferably 2 to 10 μm, from the viewpoint of maintaining a moist feel, suppressing white cast in the finished product, improving the skin tone-up effect, and achieving a uniform finish. Furthermore, from the viewpoint of improving the skin tone-up effect, the aspect ratio of the long-axis particle diameter to the average thickness of the carbonate is preferably 1 or more, more preferably 1.3 or more, even more preferably 1.6 or more, preferably 40 or less, more preferably 35 or less, and even more preferably 30 or less. In addition, the aspect ratio of the long-axis particle diameter to the average thickness of the carbonate is preferably 1 to 40, more preferably 1 to 35, and even more preferably 1 to 30. Here, the volume-average particle diameter is measured using a laser diffraction scattering particle size distribution analyzer (Horiba, Ltd., LA-920). In this invention, the volume-average particle diameter is the average particle diameter based on volume, and is defined as the 50% median diameter. Furthermore, the aspect ratio is calculated from the ratio of the volume-average particle diameter to the average particle thickness, and is defined as aspect ratio = (volume-average particle diameter / average thickness). The average particle thickness is determined by number averaging the thicknesses of 10 to 50 parent particles observed and measured using a scanning electron microscope or transmission electron microscope.

[0030] As the carbonate of component (D), commercially available products can be used. For example, as calcium carbonate, light calcium carbonate (manufactured by Omi Chemical Industry Co., Ltd., volume average particle size 3 μm, spindle-shaped, calcite type), Karumaru SCS-M5 (manufactured by Sakai Chemical Industry Co., Ltd., volume average particle size 5 μm, spherical), etc.; as magnesium carbonate, heavy magnesium carbonate (manufactured by Kyowa Chemical Industry Co., Ltd., volume average particle size 1.5 μm, plate-shaped, aspect ratio 5-50), etc. Carbonates can be used as is, or they can be used after being hydrophobized using conventional methods.

[0031] The anhydrous silicic acid in component (D) includes not only those used as anhydrous silicic acid but also those used as surface treatment agents, but those used alone as anhydrous silicic acid are preferred. The shape of component (D), anhydrous silicic acid, is not limited and may be spindle-shaped, rod-shaped, spherical, plate-shaped, needle-shaped, fibrous, petal-shaped, or any other form. From the viewpoint of obtaining a uniform finish, anhydrous silicic acid is preferably spherical. Here, "spherical" includes perfect spheres, approximately spherical shapes, and ellipsoids, and may also include spherical powders with uneven surfaces.

[0032] From the viewpoint of obtaining a uniform finish, the volume-average particle size of anhydrous silicic acid is preferably 1 to 50 μm, more preferably 1 to 35 μm, and even more preferably 2 to 15 μm. The volume-average particle size was measured using a laser diffraction scattering particle size analyzer (LMS-350, manufactured by Seishin Corporation) with ethanol as the dispersion medium. Note that the volume-average particle size is the average particle size based on volume, and is defined as the 50% median diameter. Anhydrous silicic acid can be used as is, or it can be used after being hydrophobized by conventional methods. Dimethicone treatment is preferred as the hydrophobization treatment.

[0033] As the sulfate of component (D), divalent metal sulfates are preferred, such as calcium sulfate, magnesium sulfate, and barium sulfate. Of these, it is preferable to include at least one or more selected from calcium sulfate and barium sulfate, with barium sulfate being more preferable, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, and obtaining a uniform finish. The sulfate of component (D) includes not only those used as sulfates but also those used as surface treatment agents, but those used alone as sulfates are preferred.

[0034] The shape of the sulfate of component (D) is not limited and may be spindle-shaped, rod-shaped, spherical, plate-shaped, needle-shaped, fibrous, petal-shaped, or any other form. From the viewpoint of obtaining a uniform finish, the shape of the sulfate of component (D) is preferably spindle-shaped, spherical, rod-shaped, plate-shaped, needle-shaped, fibrous, or petal-shaped, more preferably spindle-shaped, spherical, plate-shaped, needle-shaped, or fibrous, and even more preferably spindle-shaped, spherical, or plate-shaped. Furthermore, the volume-average particle size of the sulfate is preferably 0.1 to 60 μm, more preferably 2 to 50 μm, and even more preferably 5 to 40 μm, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, and obtaining a uniform finish. The volume-average particle size is measured using the same method as for carbonates. Sulfates can be used as is, or they can be used after being hydrophobized using conventional methods.

[0035] Component (D), alumina, is an aluminum oxide represented by the chemical formula Al2O3, and is synonymous with aluminum oxide. It is used because it maintains a moist feel, suppresses white cast in the finish, improves the skin tone-up effect, and provides an even finish. The alumina in component (D) includes both alumina used as a surface treatment agent and alumina used as a surface treatment agent, but alumina used alone is preferred. The shape of component (D), alumina, is not limited and may be spindle-shaped, rod-shaped, spherical, plate-shaped, needle-shaped, fibrous, petal-shaped, or any other form. From the viewpoint of obtaining a uniform finish, the shape of the alumina in component (D) is preferably fusiform, spherical, plate-shaped, needle-shaped, fibrous, or petal-shaped, more preferably fusiform, spherical, plate-shaped, needle-shaped, or fibrous, and even more preferably fusiform, spherical, or plate-shaped.

[0036] Furthermore, the volume-average particle size of alumina is preferably 0.1 to 50 μm, more preferably 1 to 30 μm, and even more preferably 5 to 20 μm, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, and obtaining a uniform finish. The volume-average particle size is measured using the same method as for carbonates. Alumina can be used as is, or it can be used after being hydrophobized using conventional methods.

[0037] As the glass powder for component (D), glass flakes are preferred. The shape of the glass powder of component (D) is not limited and may be spindle-shaped, rod-shaped, spherical, plate-shaped, needle-shaped, fibrous, petal-shaped, or any other shape. From the viewpoint of obtaining a uniform finish, the shape of the glass powder of component (D) is preferably spindle-shaped, spherical, plate-shaped, needle-shaped, fibrous, or petal-shaped, with spherical and plate-shaped being more preferable. Furthermore, the volume-average particle size of the glass powder is preferably 1 to 300 μm, more preferably 2 to 200 μm, and even more preferably 5 to 100 μm, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, and obtaining a uniform finish. The volume-average particle size is measured using the same method as for carbonates.

[0038] Furthermore, from the viewpoint of improving the skin tone-up effect, the aspect ratio of the long-axis particle diameter to the average thickness of the glass powder is preferably 10 or more, more preferably 12 or more, even more preferably 15 or more, preferably 50 or less, more preferably 45 or less, and even more preferably 40 or less. In addition, the aspect ratio of the long-axis particle diameter to the average thickness of the glass powder is preferably 8 to 500, more preferably 10 to 45, and even more preferably 15 to 40. The aspect ratio is measured in the same way as for carbonates. Glass powder includes both glass powder used alone and glass powder used as a base material. When used as a base material, the coloring agent used for coating includes coloring agents commonly used in cosmetics, such as metals, metal oxides, and other inorganic pigments, organic pigments, and natural pigments, and one or more of these can be used in combination. Glass powder can be used as is, or it can be used after being hydrophobized using conventional methods.

[0039] As for ingredient (D), from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, resulting in a soft, smooth texture, reducing the appearance of uneven skin texture, and achieving a uniform finish, one or more selected from carbonate, anhydrous silicic acid, sulfate, alumina, and glass powder is preferred, one or more selected from carbonate, anhydrous silicic acid, and sulfate is more preferred, and one or more selected from carbonate, anhydrous silicic acid is even more preferred.

[0040] Component (D) can be one or more types, and its content is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, even more preferably 10% by mass or more, preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 35% by mass or less, from the viewpoint of maintaining a moist feel, suppressing white cast in the finish, improving the skin tone-up effect, providing a soft, smooth, and uniform finish that minimizes the appearance of skin irregularities. Furthermore, the content of component (D) is preferably 1 to 50% by mass of the total composition, more preferably 2 to 40% by mass, even more preferably 5 to 35% by mass, and even more preferably 10 to 35% by mass.

[0041] In the present invention, the mass ratio (A) / (D) of component (A) to component (D) is preferably 1.2 or higher, more preferably 1.4 or higher, even more preferably 1.6 or higher, preferably 30 or lower, preferably 20 or lower, and more preferably 10 or lower, from the viewpoint of achieving a smooth, excellent adherence to the skin when applied, a moist feel, suppression of white cast in the finish, improved skin tone-up effect, reduced visibility of skin irregularities, and a uniform finish.

[0042] In the present invention, the mass ratio of the total amount of components (A) and (B) to component (D), ((A)+(B)) / (D), is preferably 1.3 or higher, more preferably 1.5 or higher, even more preferably 1.7 or higher, preferably 32 or lower, more preferably 22 or lower, and even more preferably 12 or lower, from the viewpoint of achieving a smooth, excellent adherence to the skin when applied, a moist feel, suppression of white cast in the finish, improved skin tone-up effect, reduced visibility of skin irregularities, and a uniform finish.

[0043] In addition to the above-mentioned components, the powder cosmetic composition of the present invention may contain components commonly used in cosmetics, such as powders other than components (A), (B), and (D), oil components other than component (C), preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, UV absorbers, moisturizers, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, and the like.

[0044] From the viewpoint of being environmentally friendly, having excellent usability, and achieving a uniform finish, it is even more preferable that the powder cosmetic composition of the present invention substantially does not contain organic resin powder. Here, organic resin powder is referred to as microplastic beads and represents solid synthetic polymers with a particle size of 5 mm or less. 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. Naturally derived polymers such as cellulose are not included.

[0045] The powder cosmetic composition of the present invention can be in the form of a powder cosmetic composition or a solid powder cosmetic composition, and is preferred as a solid powder cosmetic composition. The powder cosmetic of the present invention can be manufactured according to conventional methods. When a solid powder cosmetic is to be produced, for example, components (A) and (D) are uniformly mixed, then components (B) and (C) and other components are added and uniformly mixed, the resulting mixture is pulverized, sieved, and then molded to obtain a solid powder cosmetic.

[0046] The powdered cosmetic composition of the present invention can be used, for example, as a makeup cosmetic such as face powder, powder foundation, concealer, highlighter, contouring powder, blush, and eyeshadow. [Examples]

[0047] Manufacturing Example 1 (Manufacturing of silicone elastomer-treated sericite): (1) Preparation of liquid silicone elastomer pulverizer; 100 parts by mass of a mixture of 25% by mass of (PEG-15 / lauryl dimethicone) crosspolymer and 75% by mass of isododecane (manufactured by Shin-Etsu Chemical Co., Ltd., KSG-320) were mixed with 50 parts by mass of water as a dispersion medium, and the mixture was pulverized and mixed using a paint shaker (YS-LD, manufactured by Yayoi Co., Ltd.) at a stroke rate of 250 times / min for 30 minutes to obtain a pulverized liquid. (2) Preparation of powder slurry; 100 parts by mass of sericite (manufactured by Sanshin Mining Co., Ltd., sericite FSE-S (average particle size 10 μm, plate-shaped)) were added to 100 parts by mass of water and thoroughly mixed in a disperser to obtain a slurry. (3) Mixing and drying; 30 parts by mass of pulverized material liquid was mixed with 200 parts by mass of powder slurry using a disperser, and then heated and dried at 100°C for 24 hours to obtain silicone elastomer-treated mica. (In the processed powder, the amount of silicone elastomer coating per 100 parts by mass of powder is 5 parts by mass.)

[0048] Manufacturing Example 2 (Manufacturing of Silicone Elastomer Treated Talc): In the preparation of the powder slurry in Production Example 1(2), sericite was replaced with 100 parts by mass of talc (Asada Flour Milling Co., Ltd., talc JA-68R (average particle size 9-12 μm, plate-shaped)) and 150 parts by mass of water. In the mixing and drying process, the amount of pulverized liquid was reduced to 18 parts by mass. Otherwise, the process was carried out in the same manner as in Production Example 1 to obtain silicone elastomer-treated talc. (In the processed powder, the amount of silicone elastomer coating per 100 parts by mass of powder is 3 parts by mass.)

[0049] Manufacturing Example 3 (Manufacturing of Silicone Elastomer Treated Synthetic Mica): In the preparation of the powder slurry in Production Example 1(2), sericite was replaced with 100 parts by mass of synthetic mica (manufactured by Nippon Koken Co., Ltd., NK-10G (average particle size 10 μm, aspect ratio 55, plate-shaped)) and 150 parts by mass of water. In (3), the amount of pulverized liquid was reduced to 18 parts by mass during mixing and drying. Otherwise, the process was the same as in Production Example 1 to obtain silicone elastomer-treated synthetic mica. (In the processed powder, the amount of silicone elastomer coating per 100 parts by mass of powder is 3 parts by mass.)

[0050] Manufacturing Example 4 (Manufacturing of Silicone Elastomer Treated Mica): In the preparation of the powder slurry in Production Example 1(2), sericite was replaced with 100 parts by mass of mica (Yamaguchi Mica Co., Ltd., Y-2300X (average particle size 19 μm, aspect ratio 60, plate-shaped)) and 150 parts by mass of water. In (3), the amount of liquid pulverized material was reduced to 18 parts by mass during mixing and drying. Otherwise, the process was the same as in Production Example 1 to obtain silicone elastomer-treated mica. (In the processed powder, the amount of silicone elastomer coating per 100 parts by mass of powder is 3 parts by mass.)

[0051] Manufacturing Example 5 (Manufacturing of silicone elastomer-treated boron nitride): In the preparation of the powder slurry in Production Example 1(2), sericite was replaced with 100 parts by mass of boron nitride (Merck Performance Materials, RonaFlair Boroneige JSQ-6 (average particle size 4.5~8 μm, plate-shaped)) and 150 parts by mass of water. In (3), the amount of the pulverized liquid was reduced to 18 parts by mass during mixing and drying. Otherwise, the process was the same as in Production Example 1 to obtain silicone elastomer-treated boron nitride. (In the processed powder, the amount of silicone elastomer coating per 100 parts by mass of powder is 3 parts by mass.)

[0052] Examples 1-12, Comparative Example 1 Solid powder cosmetics (powder foundations) with the compositions shown in Table 1 were manufactured, and their moist feel after application, smoothness during application, adherence to the skin, absence of a white cast, skin tone-up effect, minimization of skin irregularities, and even finish were evaluated. The results are also shown in Table 1.

[0053] (Manufacturing method) Components (A) and (D) were placed in a Henschel mixer and mixed uniformly. Components (B), (C), and other components were then added and mixed further until uniform. The resulting mixture was pulverized in an atomizer, passed through a sieve, and molded into a metal dish to obtain each solid powder cosmetic (powder foundation).

[0054] (Evaluation method) Five expert evaluators applied each solid powder cosmetic (powder foundation) to the skin using a sponge and evaluated the following criteria: moisturizing feel after application, smoothness during application, adherence to the skin, lack of white cast, skin tone-up effect, concealment of skin imperfections, and even finish. The results are shown as the total scores from the five evaluators.

[0055] (1) Moisturizing feeling after application: 5; It's very moist. 4; It's moist. 3; It's slightly moist. 2; It's not very moist. 1; It's not moist.

[0056] (2) Smoothness when applied: 5; Very smooth texture. 4; Smooth texture. 3; Slightly smooth texture. 2; It doesn't have a very smooth texture. 1; It does not have a smooth texture.

[0057] (3) Feeling of closeness to the skin: 5; It adheres very well to the skin. 4. It adheres well to the skin. 3; It adheres to the skin relatively well. 2; It doesn't adhere very well to the skin. 1. It does not adhere well to the skin.

[0058] (4) No white cast on the finished product: 5; It leaves very little white cast. 4. White cast is not noticeable. 3; The white cast is not very noticeable. 2; A slight white cast is noticeable. 1; The white cast is noticeable.

[0059] (5) Skin tone-up effect: 5; It looks very bright. 4; It looks bright. 3; It appears slightly brighter. 2; It doesn't look very bright. 1; It's not bright enough to see clearly.

[0060] (6) Reduced visibility of skin irregularities: 5; Skin texture is less noticeable. 4; Skin texture is not very noticeable. 3; Skin irregularities are less noticeable. 2; Skin texture is noticeable. 1; The unevenness of the skin is quite noticeable.

[0061] (7) A uniform finish: 5; Very uniform finish. 4. Uniform finish. 3; A fairly uniform finish. 2; The finish is not very uniform. 1. The finish is not uniform.

[0062] [Table 1]

[0063] Examples 13-19 Solid powder cosmetics (powder foundations) with the compositions shown in Table 2 were manufactured in the same manner as in Examples 1 to 12. All of the solid powder cosmetics in Examples 10-13 provide a moist feel after application, have a smooth feel upon application, adhere well to the skin, do not leave a noticeable white cast, have an excellent skin tone-up effect, minimize the appearance of skin irregularities, and provide a uniform finish.

[0064] [Table 2]

Claims

1. The following components (A), (B), (C), and (D): (A) One or more extender pigments selected from sericite, talc, synthetic mica, mica, and boron nitride, coated with silicone elastomer, 40% by mass or more. (B) Silicone elastomer, (C) Liquid oil component at 25°C, (D) One or more extender pigments selected from carbonates, anhydrous silicic acid, sulfates, alumina, and glass powder. A powder cosmetic containing [a specific ingredient].

2. The powder cosmetic composition according to claim 1, wherein the content of component (B) is 1 to 8% by mass, the content of component (C) is 5 to 20% by mass, and the content of component (D) is 1 to 50% by mass.

3. The powder cosmetic composition according to claim 1 or 2, wherein the mass ratio (A) / (D) of component (A) to component (D) is 1.2 to 30.

4. The powder cosmetic composition according to claim 1 or 2, wherein the amount of silicone elastomer coating in component (A) is 0.1 to 20 parts by mass per 100 parts by mass of extender pigment.

5. The powder cosmetic composition according to claim 1 or 2, wherein component (B) is a non-emulsifying silicone elastomer.

6. The powder cosmetic composition according to claim 1 or 2, wherein the mass ratio of the total amount of components (A) and (B) to component (D) ((A) + (B)) / (D) is 1.3 to 30.

7. The powder cosmetic composition according to claim 1 or 2, wherein the content of components other than components (A) to (D) is 15% by mass or less.

8. The powder cosmetic composition according to claim 1 or 2, which is a solid powder cosmetic composition.

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