Solid powder cosmetics

Abstract

To provide a solid powder cosmetic that has a good appearance, is applied on skin to spread with moisture, and shows intimate adhesion to the skin and good coloration.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 12-40 mass%, (D) a coloring pigment including iron oxide of 7-35 mass%, and (E) tabular powder coated with the coloring pigment of 15-60 mass%.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Makeup cosmetics are required to have excellent adhesion to the skin and long-lasting cosmetic properties. For example, Patent Document 1 describes a cosmetic obtained by adding a solvent to a cosmetic base containing a powder component and an oily component to form a slurry, filling the slurry into a container, and then removing the solvent, and describes that the cosmetic base contains one or more nonionic surfactants having an HLB of 10 to 15 in total, silicic anhydride and / or crystalline cellulose, hydrophobized powder, and non-volatile oily components, and the water-soluble eye makeup cosmetic has excellent cosmetic durability. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-211102 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional solid powder cosmetics have uneven surfaces after molding, making it difficult to obtain a uniform and good appearance.Furthermore, they are not fully satisfactory in terms of moist feeling, adhesion, and color development when applied to the skin. [Means for solving the problem]

[0005] The present inventors have discovered that by using a combination of two specific nonionic surfactants and an oil, along with a specific color pigment and a plate-like powder, a good appearance can be obtained, and a solid powder cosmetic can be obtained that, when applied to the skin, is moist and spreads easily, and has excellent adhesion and color development.

[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 agent 12~40% by mass, (D) 7 to 35 mass% of a color pigment containing iron oxide, (E) Plate-shaped powder coated with color pigment 15 to 60% by 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: a step of mixing (D) a color pigment containing iron oxide and (E) a plate-like powder coated with the color pigment 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 preparation, in which the amount of component (C) contained is 12 to 40 mass%, the amount of component (D) contained is 7 to 35 mass%, and the amount of component (E) contained is 15 to 60 mass%, based on the components other than the volatile solvent including water in the slurry. [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 is moist and spreads easily, providing excellent adhesion and color development. 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 and less than 6.5, more preferably 4 or more and 6.4 or less, even more preferably 4.5 or more and 6.4 or less, and even more preferably 5.8 or more and 6.3 or less, from the viewpoints of improving the appearance, the moist and spreadable feel upon application (hereinafter referred to as moist feeling), the adhesion, and the color development.

[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 viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance, component (A) preferably 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 viewpoint of improving appearance, moist feeling, adhesion, color development, and 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, and from the viewpoint of improving appearance and impact resistance in particular, the content is 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 viewpoint of improving appearance, moist feeling, adhesion feeling, color development, and impact resistance. Specific examples of component (B) include those similar to component (A), and from the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance, it 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. The content in the total composition is preferably 0.1% by mass or more from the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance; more preferably 0.3% by mass or more, and even more preferably 0.5% by mass or more, from the viewpoint of particularly improving appearance, moist feeling, adhesion, color development, and impact resistance; preferably 11% by mass or less from the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance; and 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, from the viewpoint of particularly improving appearance, color development, and impact resistance.

[0016] 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.

[0017] 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.

[0018] 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).

[0019] 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.

[0020] 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.

[0021] 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.

[0022] The ether oils include dialkyl ethers, and specific examples thereof include dihexyl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.

[0023] 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.

[0024] 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.

[0025] The oil agent of component (C) preferably contains at least one or more selected from hydrocarbon oils, ester oils, and silicone oils, from the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance.

[0026] Component (C) can be used alone or in combination of two or more types, and from the viewpoint of obtaining a good appearance and excellent moist feeling, adhesion feeling, and color development, the content is 12 mass% or more of the total composition, preferably 15 mass% or more, and more preferably 18 mass% or more, and is 40 mass% or less, preferably 30 mass% or less, and more preferably 20 mass% or less.

[0027] The color pigment of component (D) used in the present invention contains iron oxide, and preferably contains one or more selected from yellow iron oxide, red iron oxide, and black iron oxide. The color pigment of component (D) may contain a color pigment other than iron oxide. The color pigment other than iron oxide is not limited as long as it is one commonly used in cosmetics, and examples thereof include metal oxides such as titanium oxide, zinc 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 color.

[0028] The color pigment of component (D) can be used as is, or can be subjected to a hydrophobic treatment by a conventional method before use. The hydrophobic treatment is not limited to any particular treatment that is commonly performed on powders for cosmetics, 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, a metal soap, 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 perfluoropolyether, perfluoroalkyl phosphate ester, perfluoroalkylalkoxysilane, and fluorine-modified silicone; silicone-based compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, cyclic silicone, organopolysiloxane modified with one or both ends by a trialkoxy group, crosslinked silicone, silicone resin, fluorine-modified silicone resin, and acrylic-modified silicone; and metal stones such as aluminum stearate, aluminum myristate, zinc stearate, and magnesium stearate. soap; amino acid compounds such as proline, hydroxyproline, alanine, glycine, sarcosine, glutamic acid, aspartic acid, lauroyl lysine, lysine and their derivatives, 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 viewpoint of improving appearance, moist feeling, adhesion and color development.

[0029] Component (D) can be used alone or in combination of two or more types, and from the viewpoints of obtaining a good appearance and excellent moist feeling, adhesion feeling, and color development, the content is 7% by mass or more of the total composition, preferably 10% by mass or more, and more preferably 15% by mass or more, and is 35% by mass or less, preferably 30% by mass or less, and more preferably 25% by mass or less.

[0030] Component (E) used in the present invention is a plate-like powder coated with a color pigment. The term "plate-like" includes not only a plate-like shape in the narrow sense, but also powders in the shape of flakes or the like. The plate-like powder that serves as the substrate may be any of those commonly used in cosmetics, such as mica, synthetic phlogopite, muscovite, phlogopite, lepidolite, biotite, and lepidolite; plate-like zinc oxide, plate-like titanium oxide, plate-like cerium oxide, barium sulfate, talc, plate-like kaolin, sericite, plate-like silica, plate-like hydroxyapatite, bentonite, montmorillonite, hectorite, plate-like ceramic powder, plate-like alumina, plate-like boron nitride, plate-like polymethyl methacrylate powder, plate-like iron oxide, aluminum, and plate-like glass powder. Of these, mica and synthetic phlogopite are preferred from the viewpoint of improving appearance, moist feeling, adhesion, color development and impact resistance.

[0031] The plate-like powder of component (E) preferably has an average particle size of 2 to 60 μm, more preferably 3 to 40 μm, from the viewpoint of improving appearance, moist feeling, adhesive feeling, color development, and impact resistance, and preferably has an aspect ratio of 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).

[0032] Examples of color pigments that coat the plate-like powder include those similar to those described above. From the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance, it is preferable to contain iron oxide, and more preferable to contain one or more kinds selected from yellow iron oxide, red iron oxide, and black iron oxide.

[0033] Specific examples of component (E) include iron oxide-coated mica, iron oxide-coated synthetic phlogopite, iron oxide-coated plate alumina, iron oxide-coated plate glass powder, iron oxide-coated plate silica, iron oxide-coated mica titanium, iron oxide / titanium oxide-coated synthetic phlogopite, iron oxide / titanium oxide-coated plate alumina, iron oxide / titanium oxide-coated plate glass powder, and iron oxide / titanium oxide-coated plate silica, with iron oxide-coated mica and iron oxide-coated synthetic phlogopite being preferred. Component (E) may be hydrophobized in the same manner as component (D).

[0034] Component (E) can be used alone or in combination of two or more types, and from the viewpoints of obtaining a good appearance and excellent moist feeling, adhesion and color development, the content is 15% by mass or more of the total composition, preferably 20% by mass or more, and more preferably 25% by mass or more, and is 60% by mass or less, preferably 50% by mass or less, and more preferably 40% by mass or less.

[0035] 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, from the viewpoint of achieving better appearance, moist feeling, adhesion, and color development, (v+w) / z=1.8 to 4.5 is preferable, 1.9 to 4 is more preferable, and 2 to 3.5 is even more preferable.

[0036] The solid powder cosmetic of the present invention may further contain (F) a color pigment and a powder other than component (E). The powders other than the color pigment and component (E) are not limited as long as they are those used in ordinary cosmetics, and extender pigments, luster pigments, etc. can be used. 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.

[0037] As the lustrous pigment, materials other than component (E) such as polyethylene terephthalate-polymethyl methacrylate laminated powder, polyethylene terephthalate-aluminum vapor-deposited powder, polyethylene terephthalate-gold vapor-deposited laminated powder, etc., which have been cut into any desired shape from film rolls, can be used. 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; acylated lysine powders such as lauroyl lysine; and metal soap powders, which are higher fatty acid metal salts, can be used.

[0038] There are no limitations on the size, shape, etc. of these powders, and they can be used as they are, or they can be hydrophobized in the same manner as component (D).

[0039] The solid powder cosmetic of the present invention preferably contains a hydrophobic powder, including hydrophobic components (D) and (E), from the viewpoints of obtaining a good appearance, spreading moistly when applied to the skin, and exhibiting excellent adhesion and color development. 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, a powder that floats in the water without settling or dispersing after stirring for 3 minutes at 1500 rpm using a disper can be determined to be hydrophobic.

[0040] Such hydrophobic powders can be used alone or in combination of two or more. From the viewpoint of improving appearance, moist feeling, adhesion, color development, and impact resistance, 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 is preferably 70% by mass or less, more preferably 66% by mass or less, and even more preferably 62% by mass or less.

[0041] 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.

[0042] 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: a step of mixing (D) a color pigment containing iron oxide and (E) a plate-like powder coated with the color pigment with an oil-in-water emulsion composition to produce a slurry; removing the volatile solvent, including water, from the slurry; The solid powder cosmetic can be produced by a method for producing a solid powder cosmetic, in which the amount of component (C) contained is 12 to 40 mass%, the amount of component (D) contained is 7 to 35 mass%, and the amount of component (E) contained is 15 to 60 mass%, based on the components other than the volatile solvent including water in the slurry. This method provides excellent moldability and can 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.

[0043] The amount of component (C) contained relative to the components other than the volatile solvent including water in the slurry is 12 to 40 mass%, preferably 15 to 30 mass%, and more preferably 18 to 25 mass%, from the viewpoints of excellent moldability and suppressing poor appearance after solvent removal. From the above viewpoints, the amount of component (D) contained in the slurry relative to the components other than the volatile solvent including water is 7 to 35 mass %, preferably 10 to 30 mass %, more preferably 15 to 25 mass %. 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 15 to 60 mass %, preferably 20 to 55 mass %, more preferably 25 to 50 mass %.

[0044] Furthermore, when the amount of component (A) contained in the slurry relative to the components other than the volatile solvent including water is defined as X and the amount of component (B) contained is defined as Y, from the viewpoint of excellent moldability and suppression of poor appearance after solvent removal, It is preferable that Y≧7X / 3 (X>0). From a similar perspective, It is preferable that Y≧1.5−X.

[0045] From the viewpoint of improving moldability, the amount X of component (A) relative to the components other than the volatile solvent including water in the slurry is preferably 1.1% by mass or less, and more preferably 1% by mass or less, and the amount Y of component (B) is preferably 7% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less.

[0046] 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 manufacturing equipment, being environmentally friendly, and improving the appearance, moist feeling, adhesion, and color development of the product, 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.

[0047] In addition, the step of producing a slurry by mixing the plate-like powder coated with (D) the color pigment containing iron oxide and (E) the color pigment 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 centrifugal mixer, a disperser mixer, or the like. 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.

[0048] The solid powder cosmetic of the present invention is suitable as a makeup cosmetic such as a powder foundation, blusher, eye shadow, etc. [Example]

[0049] Examples 1 to 10, Comparative Examples 1 to 5 Solid powder cosmetics were produced using the formulations shown in Table 1, and evaluated for moldability, moist feeling, adhesion, color development, appearance, and impact resistance. The results are also shown in Table 1.

[0050] (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 18 of the cosmetic base materials 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.

[0051] (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.

[0052] (2) Moisturizing, close contact, and color development: A panel of 20 female subjects conducted a sensory evaluation of the moist feeling, adhesion, and color development of each solid powder cosmetic product when it was applied to the skin. The results are shown as the number of people who answered "good" for each item.

[0053] (3) 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.

[0054] (4) 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.

[0055] [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) 1.5 to 2 mass% of a nonionic surfactant having an HLB of 6.5 or more, (C) 12 to 40 mass% of an oil agent that is liquid at 25°C, (D) 7 to 35 mass% of a color pigment containing iron oxide, (E) Plate-like powder coated with color pigment: 15 to 60% by mass A solid powder cosmetic containing

2. 2. The solid powder cosmetic according to claim 1, which contains a hydrophobic powder, including hydrophobic components (D) and (E).

3. 3. The solid powder cosmetic preparation according to claim 1, wherein (v+w) / z=1.8 to 4.5, where z is the content of component (C), v is the content of component (D), and w is the content of component (E).

4. 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) 1.5 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: a step of mixing (D) a color pigment containing iron oxide and (E) a plate-like powder coated with the color pigment 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 (C) contained in the slurry is 12 to 40 mass%, the amount of component (D) contained in the slurry is 7 to 35 mass%, and the amount of component (E) contained in the slurry is 15 to 60 mass%, based on the components other than the volatile solvent including water.

5. When the amount of component (A) contained in the slurry relative to the components other than the volatile solvent including water is X and the amount of component (B) contained is Y, The method for producing a solid powder cosmetic according to claim 4, wherein Y≧7X / 3 (X>0).

6. When the amount of component (A) contained in the slurry relative to the components other than the volatile solvent including water is X and the amount of component (B) contained is Y, The method for producing a solid powder cosmetic according to claim 4 or 5, wherein Y≧1.5−X.

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