Solid powder cosmetics

Abstract

To provide a solid powder cosmetic that has a good appearance, is applied on skin to spread with smoothness, shows intimate adhesion to the skin, comes off in proper quantities and resists caking.SOLUTION: A solid powder cosmetic contains following components (A), (B), (C), (D) and (E): (A) a nonionic surfactant with an HLB of less than 6.5, (B) a nonionic surfactant with an HLB of 6.5 or more, (C) an oil solution, (D) lustering powder with an average particle size of 5-15 μm, of 5-30 mass%, and (E) metallic soap-treated powder of 5-35 mass%.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a solid powder cosmetic preparation. [Background technology]

[0002] Solid powder cosmetics are required to have excellent removal properties when applied by rubbing with a sponge or puff, a feeling of use such as spreadability on the skin, and excellent cosmetic durability. For example, Patent Document 1 describes that a solid powder cosmetic containing a flexible organic resin powder, a silicone-modified acrylic polymer, and a nonionic surfactant is excellent in water and oil repellency, miscibility with water, cosmetic durability, feel during use, and impact resistance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-168332 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional solid powder cosmetics are not fully satisfactory in terms of smoothness when applied to the skin, adhesion, and amount of removal, and also have the problem of caking. [Means for solving the problem]

[0005] The present inventors have discovered that by using a combination of two specific nonionic surfactants and an oil agent, along with a specific glittering powder and a metal soap-treated powder, a good appearance can be obtained, and a solid powder cosmetic can be obtained that spreads smoothly when applied to the skin, has excellent adhesion, is dispensed in an appropriate amount, and exhibits reduced caking.

[0006] The present invention relates to a composition comprising the following components (A), (B), (C), (D) and (E): (A) a nonionic surfactant with an HLB of less than 6.5; (B) a nonionic surfactant with an HLB of 6.5 or more; (C) oil solution, (D) 5-30% by mass of glittering powder with an average particle size of 5-15 μm, (E) Metal soap-treated powder 5 to 35 mass% The present invention relates to a solid powder cosmetic comprising the above.

[0007] The present invention also provides a composition comprising the following components (A), (B) and (C): (A) a nonionic surfactant with an HLB of less than 6.5; (B) a nonionic surfactant with an HLB of 6.5 or more; (C) Oil and volatile solvents, including water. producing an oil-in-water emulsion composition comprising: (D) a glittering powder having an average particle size of 5 to 15 μm and (E) a metal soap-treated powder are mixed with an oil-in-water emulsion composition to produce a slurry; removing the volatile solvent, including water, from the slurry; The present invention relates to a method for producing a solid powder cosmetic, in which the amount of component (D) contained in the slurry is 5 to 30 mass % and the amount of component (E) contained is 5 to 35 mass % relative to the components other than the volatile solvent, including water. [Effects of the Invention]

[0008] The solid powder cosmetic of the present invention has a uniform surface without unevenness, giving it a good appearance, and when applied to the skin, it spreads smoothly, provides excellent adhesion, dispenses in an appropriate amount, and inhibits caking. It also has excellent impact resistance. DETAILED DESCRIPTION OF THE INVENTION

[0009] The HLB of the nonionic surfactant of component (A) is less than 6.5, preferably 3.5 or more but less than 6.5, more preferably 4 or more but less than 6.4, even more preferably 4.5 or more but less than 6.4, and even more preferably 5.8 or more but less than 6.3, from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, and suppressing caking.

[0010] In the present invention, HLB (Hydrophilic-Lipophilic Balance) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and for nonionic surfactants, it can be calculated using Griffin's formula.

[0011] Specific examples of the nonionic surfactant of component (A) include those commonly used in cosmetics, such as sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ether, polyoxyethylene phytosterose ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, alkyl glyceryl ether-modified silicones, polyoxyalkylene-modified silicones, polyoxyalkylene-alkyl co-modified silicones, and polyoxyalkylene-fluoroalkyl co-modified silicones.

[0012] From the viewpoints of obtaining a good appearance, providing excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, it is preferable that component (A) contains at least one or more selected from sorbitan fatty acid esters, glycerin fatty acid esters, and polyglycerin fatty acid esters.

[0013] The nonionic surfactants of component (A) can be used singly or in combination of two or more. From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, the content in the total composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more; from the same viewpoints, the content is preferably 4% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less.

[0014] The HLB of the nonionic surfactant of component (B) used in the present invention is 6.5 or more, preferably 6.5 or more and 16 or less, more preferably 6.8 or more and 16 or less, and even more preferably 7.5 or more and 15 or less, from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance. Specific examples of component (B) include those similar to those of component (A). From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, component (B) preferably contains at least one or more selected from polyoxyethylene sorbitan fatty acid esters, glycerin fatty acid esters, and polyglycerin fatty acid esters, and more preferably contains polyglycerin fatty acid esters.

[0015] The nonionic surfactants of component (B) can be used singly or in combination of two or more. From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, the content in the total composition is preferably 0.1% by mass or more, and particularly from the viewpoints of improving the appearance, smoothness, adhesion, and removal amount, and suppressing caking, the content is more preferably 0.3% by mass or more, and even more preferably 0.5% by mass or more. From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, the content is preferably 11% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, and even more preferably 2% by mass or less.

[0016] In the solid powder cosmetic of the present invention, when the content of component (A) is x and the content of component (B) is y, from the viewpoint of particularly excellent removal amount and suppression of caking, Preferably, y≧4x / 5 (x>0); More preferably, y≧13x / 10; It is more preferable that y≧13x / 7.

[0017] In addition, from the viewpoint of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, Preferably, y≧0.45−x; More preferably, y≧1−x; It is more preferable that y≧1.5−x.

[0018] The oil agent of component (C) used in the present invention is preferably a liquid or paste at 25°C, and any oil agent commonly used in cosmetics may be used, such as hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols.

[0019] More specifically, examples of hydrocarbon oils include straight-chain or branched-chain hydrocarbon oils such as squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, and petrolatum.

[0020] Ester oils include monoester oils, diester oils, triester oils and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic 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, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, and alkyl benzoates (C12 to C15).

[0021] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms and difatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monomyristate monoisostearate, glycerin di-2-heptylundecanoate, di-2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, and di-2-ethylhexyl sebacate.

[0022] Triester oils include tri-fatty acid esters of trivalent or higher polyhydric alcohols, and specific examples include glyceryl trimyristate, glyceryl triisopalmitate, glyceryl tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric)glyceryl, glyceryl trioleate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, olive oil, and jojoba oil.

[0023] Examples of tetraester oils include tetra-fatty acid esters of tetrahydric or higher polyhydric alcohols, and specific examples include pentaerythritol tetra(behenate / benzoate / ethylhexanoate), pentaerythritol tetraethylhexanoate, pentaerythritol tetraoctanoate, and pentaerythritol tetra-2-ethylhexanoate.

[0024] The ether oils include dialkyl ethers, and specific examples thereof include dihexyl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.

[0025] Examples of silicone oils include crosslinked methylpolysiloxane, network methylpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxanes such as methyltrimethicone, dimethylcyclopolysiloxane and diphenylsiloxyphenyltrimethicone, and higher alcohol-modified organopolysiloxanes. Examples of volatile silicone oils include linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), and dimethylpolysiloxane (2cs); branched siloxanes such as methyltrimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0026] Examples of higher alcohols include those having a linear or branched alkyl or alkenyl group having 10 to 24 carbon atoms, such as lauryl alcohol, myristyl alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyldodecanol, and oleyl alcohol.

[0027] The oil agent of component (C) preferably contains at least one or more selected from hydrocarbon oils, ester oils, and silicone oils, from the viewpoints of obtaining a good appearance, providing excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance.

[0028] Component (C) can be used singly or in combination of two or more. From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, the content is preferably 1.6% by mass or more of the total composition, more preferably 2% by mass or more, and more preferably 2.4% by mass or more, and preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less.

[0029] The glittering powder of component (D) used in the present invention is not limited as long as it is one that is commonly used in cosmetics, and examples include plate-like powders such as mica, synthetic phlogopite, glass, silica, alumina, etc., the surface of which is coated with a colorant such as titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, organic pigments, etc., and raw film rolls such as polyethylene terephthalate-polymethyl methacrylate laminated powder, polyethylene terephthalate-aluminum vapor-deposited powder, and polyethylene terephthalate-gold vapor-deposited laminated powder, cut into any desired shape.

[0030] The glittering powder of component (D) has an average particle size of 5 to 15 μm, more preferably 6 to 12 μm, from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance. The aspect ratio is preferably 7 to 200, more preferably 10 to 150. In the present invention, the average particle size is measured by electron microscope observation or a particle size distribution analyzer using a laser diffraction / scattering method. Specifically, in the case of the laser diffraction / scattering method, ethanol is used as a dispersion medium and measurement is performed using a laser diffraction / scattering particle size distribution analyzer (e.g., LA-920, manufactured by Horiba, Ltd.). The thickness is measured using an atomic force microscope to determine the difference from a reference plane, and the arithmetic mean is used as the average thickness. The aspect ratio is calculated from the ratio of the average particle diameter to the average particle thickness, and is defined as aspect ratio=(average particle diameter / average thickness).

[0031] As component (D), from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, mica and synthetic phlogopite are preferred, and those coated with titanium oxide are more preferred. The glittering powder treated with a metal soap is included in component (E) rather than component (D).

[0032] The lustrous powder of component (D) can be used alone or in combination of two or more types, and the content is 5% by mass or more of the total composition, preferably 8% by mass or more, and more preferably 11% by mass or more, from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance, and is 30% by mass or less, preferably 27% by mass or less, and more preferably 25% by mass or less.

[0033] The component (E) used in the present invention is a metal soap-treated powder. The powder to be treated, including component (D), is not limited as long as it is one that is commonly used in cosmetics, and examples that can be used include extender pigments, color pigments, and glittering powders. Examples of extender pigments include inorganic pigments such as silicic acid, silicic acid anhydride, magnesium silicate, talc, sericite, boron nitride, mica, synthetic mica, glass flakes, synthetic phlogopite, 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, and alumina, as well as composite powders of these pigments.

[0034] Examples of color pigments include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine, 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 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment.

[0035] Further, organic powders such as polyethylene powder, polypropylene powder, polymethyl methacrylate powder, nylon powder, polytetrafluoroethylene powder, silicone powder, silicone rubber powder, silk powder, urethane powder, cellulose powder, starch powder, and polyethylene fluoride; inorganic powders such as silica, magnesium carbonate, and calcium carbonate; and acylated lysine powders such as lauroyl lysine can be used.

[0036] The metal soap used to treat these powders is preferably a higher fatty acid salt of a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, or a mixture thereof, with a non-alkali metal. Any non-alkali metal may be used, and examples thereof include aluminum, silver, barium, beryllium, calcium, cerium, cobalt, chromium, copper, iron, magnesium, manganese, nickel, strontium, thorium, titanium, zinc, and the like. Of these, calcium, aluminum, magnesium, and zinc are preferred from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance. Specifically, calcium soaps include calcium stearate, calcium palmitate, calcium myristate, calcium oleate, calcium ricinoleate, calcium laurate, calcium behenate, calcium octanoate, etc.; aluminum soaps include aluminum stearate, aluminum myristate, aluminum palmitate, aluminum behenate, aluminum octanoate, etc.; magnesium soaps include magnesium stearate, magnesium palmitate, magnesium myristate, magnesium oleate, etc.; and zinc soaps include zinc stearate, zinc myristate, etc.

[0037] The powder can be treated with a metal soap by a conventional method, for example, by adding a metal chloride to a mixture of the powder, an alkali salt of a fatty acid, and water, causing a reaction, and then precipitating the treated product. The amount of metal soap to be treated (the content of metal soap in the metal soap-treated powder) is preferably 0.1 to 15 mass % and more preferably 0.2 to 10 mass % relative to the metal soap-treated powder.

[0038] The metal soap-treated powder of component (E) can be used alone or in combination of two or more types, and the content is 5% by mass or more of the total composition, preferably 10% by mass or more, and more preferably 15% by mass or more, and 35% by mass or less, preferably 30% by mass or less, and more preferably 27% by mass or less, from the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, suppressing caking, and improving impact resistance. Of the component (E), the proportion of the glittering powder of component (D) treated with metal soap is preferably less than 50% by mass from the viewpoint of achieving excellent smoothness, adhesion, and a matte texture, and is preferably 50% by mass or more from the viewpoint of achieving excellent removal, suppressing caking, and achieving a glittering texture.

[0039] In the present invention, when the content of component (C) is z, the content of component (D) is v, and the content of component (E) is w, a good appearance is obtained, smoothness, adhesion, and removal amount are excellent, caking is suppressed, and impact resistance is improved. From the viewpoint of these, It is preferable that (v+w) / z=2 to 6.3; It is more preferably 2.1 to 6, and even more preferably 2.2 to 5.5.

[0040] The solid powder cosmetic of the present invention may further contain (F) a powder other than the components (D) and (E). Examples of the powder of component (F) include the same powder as component (E) (before treatment with metal soap). There are no limitations on the size, shape, etc. of these powders, and they can be used as they are, or they can be used after being subjected to a hydrophobic treatment other than the metal soap treatment. The solid powder cosmetic of the present invention may contain hydrophobic powders other than component (E), including hydrophobic powders among component (D). Examples of such hydrophobic powders include a glittering powder (size, shape, etc. not limited) similar to component (D) that has been subjected to a hydrophobic treatment other than metal soap treatment, and a powder similar to component (E) that has been subjected to a hydrophobic treatment other than metal soap treatment.

[0041] The hydrophobic treatment is not limited to any particular treatment as long as it is a treatment that is applied to ordinary cosmetic powders, and may be a dry treatment, a wet treatment, or the like, using a surface treatment agent such as a fluorine compound, a silicone compound, an amino acid compound, lecithin, an alkylsilane, an oil, or an organic titanate. Specific examples of surface treatment agents include fluorine-based compounds such as perfluoropolyethers, perfluoroalkyl phosphate esters, perfluoroalkylalkoxysilanes, and fluorine-modified silicones; silicone-based compounds such as dimethylpolysiloxanes, methylhydrogenpolysiloxanes, cyclic silicones, organopolysiloxanes modified with trialkoxy groups at one or both ends, crosslinked silicones, silicone resins, fluorine-modified silicone resins, and acrylic-modified silicones; amino acid compounds such as proline, hydroxyproline, alanine, glycine, sarcosine, glutamic acid, aspartic acid, lauroyl lysine, lysine and derivatives thereof, and acylated amino acids; lecithin, hydrogenated lecithin; alkyl silanes such as methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, and triethoxycaprylylsilane; oils such as polyisobutylene, waxes, oils and fats, and fatty acids; and organic titanates such as isopropyl triisostearoyl titanate. Of these, treatment with a silicone compound and treatment with an amino acid compound are preferred from the viewpoints of obtaining a good appearance, providing excellent smoothness, adhesion, and removal amount, and suppressing caking.

[0042] The hydrophobic powder may be any powder whose surface exhibits hydrophobicity, and may be a powder that has been hydrophobized as described above, or a powder that is itself hydrophobic. Whether a powder is hydrophobic or not can be determined, for example, by dispersing the powder in water at 25°C. Specifically, if the powder floats in the water without settling or dispersing after stirring at 1500 rpm for 3 minutes using a disperser, it can be determined to be a hydrophobic powder. Such hydrophobic powders can be used alone or in combination of two or more. From the viewpoints of obtaining a good appearance, excellent smoothness, adhesion, and removal amount, and suppressing caking, the content is preferably 20% by mass or more of the total composition, more preferably 30% by mass or more, and even more preferably 40% by mass or more, and preferably 70% by mass or less, more preferably 66% by mass or less, and even more preferably 62% by mass or less.

[0043] In addition to the above-mentioned components, the solid powder cosmetic of the present invention may contain components that are commonly used in cosmetics, such as surfactants other than components (A) and (B), oily components other than component (C), preservatives, antioxidants, colorants, thickeners, pH adjusters, fragrances, ultraviolet absorbers, moisturizers, blood circulation promoters, cooling agents, antiperspirants, disinfectants, skin activators, etc.

[0044] The solid powder cosmetic of the present invention can be produced according to a conventional method. For example, the following components (A), (B) and (C): (A) a nonionic surfactant with an HLB of less than 6.5; (B) a nonionic surfactant with an HLB of 6.5 or more; (C) Oil and volatile solvents, including water. producing an oil-in-water emulsion composition comprising: (D) a glittering powder having an average particle size of 5 to 15 μm and (E) a metal soap-treated powder are mixed with an oil-in-water emulsion composition to produce a slurry; removing the volatile solvent, including water, from the slurry; The slurry can be produced by a method for producing a solid powder cosmetic, in which the amount of component (D) contained is 5 to 30 mass % and the amount of component (E) contained is 5 to 35 mass % relative to the components other than the volatile solvent, including water, in the slurry. This method can particularly prevent poor appearance after removal of the volatile solvent containing water. The components (A), (B), (C), (D) and (E) used here can be the same as those described above, and it is preferable to use the same.

[0045] The amount of component (D) contained relative to the components other than the volatile solvent including water in the slurry is 5 to 30 mass %, preferably 8 to 27 mass %, and more preferably 10 to 25 mass %, from the viewpoint of suppressing poor appearance after solvent removal. From the above viewpoints, the amount of component (E) contained in the slurry relative to the components other than the volatile solvent including water is 5 to 35 mass %, preferably 8 to 30 mass %, and more preferably 10 to 27 mass %.

[0046] From the viewpoint of improving moldability, the amount X of component (A) contained in the slurry relative to the components other than the volatile solvent including water is preferably 5% by mass or less, and the amount Y of component (B) contained is preferably 7% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less.

[0047] In the above-mentioned method, the step of producing an oil-in-water emulsion composition containing components (A), (B), and (C) may be carried out by a conventional method. For example, components (A), (B), and (C) are heated to homogenize them, a volatile solvent containing heated water is added thereto, and the mixture is mixed using a homomixer or the like to obtain an oil-in-water emulsion composition. From the viewpoint of improving moldability and solvent removability, the amount of the volatile solvent including water used here is preferably 40% by mass or more and 100% by mass or less, and more preferably 50% by mass or more and 90% by mass or less, relative to the amount of components other than the volatile solvent including water. Examples of volatile solvents other than water that can be used include ethanol, propyl alcohol, isopropyl alcohol, acetone, ethyl acetate, and hexane, and these can be used in combination with water. Furthermore, from the viewpoints of simplifying the production equipment, consideration for the environment, improving the appearance, smoothness, adhesion, and amount of product removed, and suppressing caking, the amount of water in the volatile solvent is preferably 80% by mass or more, and more preferably 90% by mass or more. When a water-soluble component is to be blended into the solid powder cosmetic of the present invention, it can be dissolved in a volatile solvent containing water and blended.

[0048] In addition, the step of producing a slurry by mixing (D) the glittering powder having an average particle size of 5 to 15 μm and (E) the metal soap-treated powder with an oil-in-water emulsion composition can be carried out, for example, by adding powder components containing components (D) and (E) to the obtained oil-in-water emulsion composition and kneading them with a planetary mixer, a disperser mixer, or the like to obtain a slurry. Furthermore, the step of removing the volatile solvent containing water from the slurry can be carried out, for example, by filling the slurry into a container such as a tray and removing the solvent by suction using pressure suction, or further by heat drying, hot air drying, etc. This allows a solid powder cosmetic to be obtained.

[0049] The solid powder cosmetic of the present invention is suitable as a makeup cosmetic such as a powder foundation, blusher, eye shadow, etc. [Example]

[0050] Examples 1 to 8, Comparative Examples 1 to 4 Solid powder cosmetics were produced using the formulations shown in Table 1, and evaluated for moldability, smoothness, adhesion, amount removed, caking, appearance, and impact resistance. The results are also shown in Table 1.

[0051] (Manufacturing method) (1) Emulsification: Among the cosmetic base materials, oils (components 6 to 8) and surfactants (components 1 to 5) were weighed and placed in a beaker, which was then heated to 60°C and homogenized. Next, a preservative (component 9) was added to an aqueous phase (water outside the cosmetic formulation; Table 1 shows the mass % relative to the total cosmetic base material) heated to 60°C, and the mixture was poured into the beaker and mixed at 6,000 rpm for 5 minutes using a homomixer. The mixture was then cooled in water while stirring with a spatula, yielding an emulsion. (2) Powder input: Powders of components 10 to 19 of the cosmetic base material were weighed out and placed in a plastic bag, and the bag mixture was obtained by adding air and shaking by hand. Next, the emulsion was weighed out and the bag mixture was poured into a plastic container and mixed with a spatula. After that, the mixture was kneaded for 150 seconds in a planetary mixer to obtain a slurry. (3) Filling, pressing, suction, and drying: 3 g of the slurry was filled into a 27 mm x 27 mm aluminum dish, and the solvent was sucked out by applying pressure and suction twice, at 0.15 MPa for 1 second and then at 0.15 MPa for 2 seconds. The remaining solvent was dried by heating at 60°C for 12 hours, and a molded solid powder cosmetic product was obtained.

[0052] (Evaluation method) (1)Moldability: The hardness of each solid powder cosmetic obtained was measured using a rheometer CR-100 (manufactured by Sun Scientific Co., Ltd., jig 2 mmφ, needle penetration 1 mm, 60 mm / min), and moldability was evaluated based on the obtained hardness value. The results were expressed as a hardness value [gf]. The higher the hardness value, the better the moldability.

[0053] (2) Smoothness, adhesion, and amount of application: A panel of 20 female subjects conducted a sensory evaluation of each solid powder cosmetic product on the basis of its moisturizing feel, adhesion, and amount of removal when applied to the skin. The results are shown as the number of people who answered "good" for each item.

[0054] (3) Caking: A sensory evaluation was conducted by 20 female panelists regarding the hardening (caking) of the cosmetic surface when each solid powder cosmetic was applied to a finger or an applicator. The results are shown as the number of people who answered that the cosmetic did not harden.

[0055] (4) Appearance: The appearance of each solid powder cosmetic was visually inspected by 20 female panelists. The results are shown in terms of the number of people who answered that the surface was uniform and even, and that the appearance was good.

[0056] (5) Impact resistance: Each solid powder cosmetic was placed in a cosmetic compact and dropped vertically onto a wooden board from a height of 20 cm 20 times. Impact resistance was evaluated based on the number of times it took for defects such as chipping, cracking, or cracking to occur. The higher the number of times, the better the impact resistance.

[0057] [Table 1]

Claims

1. The following components (A), (B), (C), (D), and (E): (A) 0.1 to 0.6 mass% of a nonionic surfactant having an HLB of less than 6.5, (B) 1.4 to 2 mass% of a nonionic surfactant having an HLB of 6.5 or more, (C) an oil agent that is liquid at 25°C; (D) 5-30% by mass of glittering powder with an average particle size of 5-15 μm, (E) Metal soap-treated powder 5 to 35 mass% A solid powder cosmetic containing

2. 2. The solid powder cosmetic according to claim 1, which contains a hydrophobic powder other than component (E).

3. When the content of component (A) is x and the content of component (B) is y, 3. The solid powder cosmetic according to claim 1, wherein y≧4x / 5 (x>0).

4. When the content of component (A) is x and the content of component (B) is y, The solid powder cosmetic according to any one of claims 1 to 3, wherein y≧0.45−x.

5. 5. The solid powder cosmetic preparation according to claim 1, wherein the content z of component (C) is 1.6 to 15% by mass.

6. 6. The solid powder cosmetic preparation according to any one of claims 1 to 5, wherein (v+w) / z = 2 to 6.3, where z is the content of component (C), v is the content of component (D), and w is the content of component (E).

7. The following components (A), (B), and (C): (A) 0.1 to 0.6 mass% of a nonionic surfactant having an HLB of less than 6.5, (B) 1.4 to 2 mass% of a nonionic surfactant having an HLB of 6.5 or more, (C) An oil that is liquid at 25°C and volatile solvents, including water. producing an oil-in-water emulsion composition comprising: (D) a glittering powder having an average particle size of 5 to 15 μm and (E) a metal soap-treated powder are mixed with an oil-in-water emulsion composition to produce a slurry; removing the volatile solvent including water from the slurry; Including, A method for producing a solid powder cosmetic, wherein the amount of component (D) contained in the slurry is 5 to 30 mass % and the amount of component (E) contained is 5 to 35 mass % relative to the components other than the volatile solvent including water.

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