Solid powder cosmetic

Abstract

To provide a solid powder cosmetic that is produced by a wet molding method in which a solvent is removed from a mixture composed of the solvent and a cosmetic base, and does not exhibit cracks or shrinkage after the solvent removal, offering a moisturizing feel.SOLUTION: A solid powder cosmetic is obtained by removing a solvent from a mixture composed of the solvent and a cosmetic base containing the following components (A) to (D): (A) polyurethane-79, (B) fluorine-modified silicone-treated powder, (C) ester oil, and (D) spherical powder (excluding component (B)).SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a solid powder cosmetic which is produced by a wet molding method in which the solvent is removed from a mixture of a cosmetic base and a solvent, and which does not crack or shrink after the solvent is removed. [Background technology]

[0002] Solid powder cosmetics are a dosage form that is widely used for foundations, eye shadows, etc., due to advantages such as portability and ease of application. There are two methods for molding solid powder cosmetics: a dry molding method in which a powder and an oil are mixed, filled into a container, and then molded under pressure, and a wet manufacturing method in which a volatile solvent is added to a cosmetic base consisting of a powder and an oil, mixed to form a slurry, filled into a container, and molded by removing the volatile solvent. Solid powder cosmetics obtained by the wet manufacturing method are excellent in that the powder is arranged in a more dense and orderly manner by being made into a slurry, resulting in a smooth feel when used and a uniform cosmetic film.

[0003] In the wet manufacturing method, the process of removing the volatile solvent is roughly divided into two stages. It is a suction removal during compression molding, and a drying process after compression molding. When the affinity between the cosmetic base and the solvent is high, the compatibility is high, so the solvent is difficult to remove during the compression molding process. This tendency is particularly noticeable when a volatile oil is used as the solvent. If the volatile solvent cannot be adequately removed during compression molding, a large amount of the volatile solvent will be removed during the drying process. In this case, since the volatile solvent is removed after the powder has already been arranged in an orderly manner, there is a problem that the cosmetic after drying has cracks, surface irregularities, shrinkage, and other poor appearances. Therefore, in the wet manufacturing method, the quality of the final product is greatly affected by how well the solvent can be removed during compression molding, before the powder is arranged in an orderly manner, that is, by improving the efficiency of solvent removal, rather than the drying process after compression molding.

[0004] Incidentally, suppression of cracking and shrinkage of a cosmetic material is sometimes expressed as the term impact resistance. However, even if the term impact resistance is used uniformly, it can mean the drop strength when the cosmetic material is dropped, or it can mean suppression of cracking and shrinkage after solvent removal in a wet manufacturing process. The former is intended to avoid problems during use after the cosmetic material is marketed, and generally solves the problem mainly by absorbing external forces applied to the cosmetic material. The latter is intended to avoid problems during the production of the cosmetic material, and generally solves the problem mainly by improving the efficiency of solvent removal. The issue in this application refers to the latter, cracking and shrinkage after solvent removal.

[0005] Various efforts have been made to improve the cracking and shrinkage that occurs after the solvent is removed. For example, it has been disclosed that when fluorine-modified silicone oil, silicone wax, silicone oil, or a compound having a hydrophilic group and a lipophilic group, in which the lipophilic group is a two-chain type, is used (Patent Document 1), or when silicone oil agents or amino-modified silicone-treated powders are used (Patent Document 2), the solvent removal efficiency is good and impact resistance is excellent. However, all of the prior patents use silicone oil as an essential ingredient, which reduces compatibility with the solvent and improves the efficiency of solvent removal, and although the products provide a smooth finish, they do not provide a sufficiently moist feel.

[0006] On the other hand, it has been disclosed that the use sensation and impact resistance are excellent when fluorine-treated talc, hydrophobized silica, hydrophobized fine titanium oxide particles, and water-holding oil agents are blended (Patent Document 3). However, the impact resistance in Patent Document 3 refers to the drop strength when the cosmetic is dropped, which is different from the problem to be solved by the present application.

[0007] As a technology using polyurethane-79, Patent Document 4 discloses a solid cosmetic preparation that has a good feel when used, such as spreadability, and excellent impact resistance, when oil-soluble polyurethane, fluorine-modified silicone resin, volatile oil, and powder are blended. However, the impact resistance in Patent Document 4 refers to the impact resistance when the cosmetic preparation is dropped (see paragraph 0059), which is different from the problem of the present application. In addition, Patent Document 4 contains a large amount of volatile oil and silicone oil, and the moist feeling is insufficient. If a large amount of oil such as hydrocarbon oil or ester oil is blended from this composition to impart a moist feeling, the solvent removal efficiency becomes poor, and there is a problem that cracks, surface unevenness, and shrinkage are observed. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2022-156111 A [Patent Document 2] Patent No. 7227917 [Patent Document 3] Patent No. 6945809 [Patent Document 4] JP 2022-152038 A Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention aims to provide a solid powder cosmetic which is produced by a wet molding method in which the solvent is removed from a mixture of a cosmetic base and a solvent, does not crack or shrink after the solvent is removed, and can impart a moist feel. [Means for solving the problem]

[0010] As a result of intensive research, the inventors discovered that by combining (A) polyurethane-79, (B) fluorine-modified silicone-treated powder, (C) ester oil, and (D) spherical powder (excluding component (B)), it is possible to obtain a solid cosmetic preparation that is free of cracks and shrinkage with good solvent removal efficiency, and thus completed the present invention.

[0011] That is, the present invention comprises the following components (A) to (D): (A) Polyurethane-79 (B) Fluorine-modified silicone-treated powder (C) Ester oil (D) Spherical powder (excluding component (B)) The solid powder cosmetic is obtained by removing the solvent from a mixture of a cosmetic base containing the above-mentioned component (I) and a solvent. Effect of the Invention

[0012] The present invention can provide a solid powder cosmetic which is produced by a wet molding method in which the solvent is removed from a mixture of a cosmetic base and a solvent, and which does not crack or shrink after the solvent is removed. BEST MODE FOR CARRYING OUT THEINVENTION

[0013] The present invention will be described in more detail below. Unless otherwise noted, the amount of each component is expressed as "%" below, meaning mass%. In this specification, when a numerical range is expressed using ~, the range includes both ends of the numerical range.

[0014] Although the details of the principle of the present invention are unclear, it is believed that by reducing the compatibility between the cosmetic ingredients and the solvent, the cosmetic ingredients do not hold the solvent, and the solvent can be efficiently removed during compression molding. In this application, it is presumed that by blending a fluorine-modified silicone-treated powder and turning a part or all of the blended oil into an oil gel, the compatibility between the cosmetic ingredients and the solvent is reduced, achieving more efficient solvent removal. In this application, the term "good solvent removal efficiency" refers to the appropriate amount of solvent removal during compression molding.

[0015] In the present invention, component (A) Polyurethane-79 is a component that forms an oil gel together with component (C) ester oil described below. The component (A) polyurethane-79 used in the present invention is a polyurethane in which both ends of a copolymer having a hard segment block of 1,6-hexamethylene diisocyanate (HDI), a linear aliphatic diisocyanate, and 1,4-butane dihydric alcohol, a linear extendable dihydric alcohol, which is polyurethane formed by urethane bonds, and a soft segment block of hydrogenated dilinoleyl alcohol and hydrogenated polybutane dihydric alcohol, are blocked with stearyl alcohol. Due to the polarity of the polyurethane block, a physical network is formed in the oil by association via hydrogen bonds between polymer-polymer and polymer-oil. It is believed that gelation occurs when an oil is incorporated into this three-dimensional network structure. Polyurethane-79 has higher alcohol residues at its ends, which improves its solubility in various oils. The polyurethane-79 (A) used in the present invention can be easily and uniformly dissolved by dissolving it in a liquid oil to form a gel composition.

[0016] The component (A) polyurethane-79 of the present invention may be a single compound or a mixture containing polyurethane-79. For example, a commercially available product, OILKEMIA 5S CC (manufactured by LUBRIZOL), may be used. The composition contains 30% of (A) polyurethane-79 and 70% of tri(caprylic acid / capric acid)glyceryl as a liquid oil. When it is blended in cosmetics in Japan, it is common to display the blended ingredients as 70% tri(caprylic acid / capric acid)glyceryl, 25% hydrogenated polyolefin (C6-20), and 5% (HDI / trimethylol hexyl lactone) crosspolymer.

[0017] The amount of polyurethane-79 (A) in the solid powder cosmetic of the present invention is not particularly limited, but it is desirable that the amount in the cosmetic is 0.01 to 1.5%, preferably 0.02 to 0.9%, and more preferably 0.03 to 0.3% in terms of pure content. This range is preferable because the viscosity of the oil gel formed when it is present together with the ester oil (C) is not too high and it is easily dispersed when added to a solvent.

[0018] Component (A), which is an essential component of the present invention, can gel component (C). When the ratio of component (A) to component (C) is high, a hard gel is formed, and when it is low, a soft gel is formed. The ratio of component (A) to component (C) is preferably in the range of 1:10 to 1:300. This range is preferable because it provides appropriate dispersibility in the solvent, has good solvent removal efficiency, and provides a good moist feeling.

[0019] The fluorine-modified silicone-treated powder (B) of the present invention is not particularly limited. The base powder may be one that is normally used in cosmetics, and there is no particular limit to the shape (plate-like or spherical) or particle size. Examples include talc, mica, sericite, silica, titanium oxide, zinc oxide, and nylon. The fluorine-modified silicone treatment agent (B), which is the surface treatment agent, is not particularly limited as long as it is normally used in cosmetics. Examples include perfluorooctylethoxysilane, perfluorocapryltriethoxysilylethylmethicone, trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, and heptadecafluorodecyltriethoxysilane, but it is preferable to treat with perfluorooctylethoxysilane because it provides a better solvent removal efficiency and a smooth feel when used.

[0020] The amount of component (B) in the solid powder cosmetic of the present invention is not particularly limited, but the total amount in the cosmetic is preferably 10 to 50%, and more preferably 20 to 40%, which is preferable because it provides better solvent removal efficiency and a smooth feel when used.

[0021] The component (C) ester oil of the present invention is a compound of a higher fatty acid and a higher alcohol, or a compound of a higher fatty acid and glycerin. The component (C) of the present invention is not particularly limited as long as it is one that is usually used in cosmetics. For example, octyldodecyl myristate, 2-ethylhexyl palmitate, tri(caprylic acid / capric acid) glyceryl, diisostearyl malate, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, dipentaerythrityl tetra(hydroxystearate / isostearate), polyglyceryl-2 hexyltriisostearate, cetyl 2-ethylhexanoate, ethylhexyl methoxycinnamate, octocrylene, triethylhexanoin, etc. are mentioned, but paste oils such as dipentaerythrityl tetra(hydroxystearate / isostearate) are preferred because they provide a better moist feeling.

[0022] In the present invention, component (C) ester oil not only imparts a moist feeling, but also functions as a component that forms an oil gel with the above-mentioned component (A) polyurethane-79. Therefore, it is not necessary for the entire amount of component (C) to be blended to form an oil gel, and the blending ratio of the oil gel in component (C) can be appropriately selected.

[0023] The amount of component (C) in the solid powder cosmetic of the present invention is not particularly limited, but the total amount in the cosmetic is 3 to 20%, preferably 4 to 15%, and more preferably 5 to 10%. This range is preferable because it provides an appropriate moist feeling.

[0024] In the present invention, the spherical powder (D) (excluding component (B)) may be any powder that is normally used in cosmetics, and is not particularly limited to a particle structure such as non-porous or porous. Examples include silica, titanium oxide, zinc oxide, magnesium oxide, alumina, aluminum hydroxide, barium sulfate, calcium carbonate, magnesium carbonate, nylon, polyester, polyethylene, polypropylene, polystyrene, polyamide, polymethylmethacrylate silicone resin, vinyl resin, fluororesin, silicon resin, acrylic resin, melamine resin, cellulose, starch, etc., and one or more of these may be used regardless of the shape or particle size.

[0025] The amount of component (D) in the solid powder cosmetic of the present invention is not particularly limited, but the total amount in the cosmetic is desirably 3 to 30%, preferably 10 to 20%, which is preferable because excellent solvent removal efficiency and a smoother feel can be obtained within this range.

[0026] The solvent used in the present invention is preferably one or a mixture of two or more selected from volatile oily solvents such as isododecane, hydrogenated polyisobutene, dimethicone, cyclopentasiloxane, etc., and volatile aqueous solvents such as water, ethyl alcohol, isopropyl alcohol, etc. Furthermore, volatile oily solvents are preferred because they provide a good moist feeling.

[0027] Furthermore, in the present invention, in order to make the cosmetic base into a uniform slurry using a volatile solvent, it is preferable to use 50 to 100% by mass of the solvent relative to 100% by mass of the cosmetic base. A mixture formed at this ratio is preferable because it is easy to fill a container and the cosmetic base is easily dispersed in the solvent. The cosmetic base referred to in the present invention refers to a mixture of powder components, oils, and other optional components, and refers to the entire cosmetic before mixing with a volatile solvent.

[0028] In addition to the above-mentioned components, the composition of the present invention can also contain components that are generally used in cosmetics, etc., if necessary. For example, additives other than the essential components of the present application, such as extender pigments, coloring pigments, pearlescent agents, liquid oils, solid oils, paste oils, ultraviolet absorbers, surfactants, moisturizers, fragrances, bactericides, preservatives, antioxidants, ultraviolet scattering agents, anti-inflammatory agents, herbal extracts, vitamins, etc., can be appropriately blended in. The blending ratio when these components are contained can be appropriately selected according to their types and purposes, and one type may be used alone, or two or more types may be used in appropriate combination.

[0029] The form of the solid powder cosmetic of the present invention is not particularly limited, and any form used in conventional cosmetics can be widely applied, such as makeup cosmetics such as face powder, foundation, blush, eye shadow, etc., hair cosmetics, body cosmetics, etc. EXAMPLES

[0030] The present invention will be further described below with reference to examples, but the present invention is not limited to these examples in any way.

[0031] The formulations in Table 1 were used to evaluate the solvent removal efficiency. <Evaluation of Solvent Removal Efficiency> For five sheets of each solid powder cosmetic product obtained in each Example and Comparative Example, the efficiency of solvent removal was evaluated by checking the ratio of the amount of solvent remaining after compression molding to the amount of solvent removed upon completion using Equation 1. Specifically, according to the manufacturing method described in

[0039] , the amount immediately after filling the metal plate in (3) was defined as the "filling amount", the amount immediately after compression molding in (3) was defined as the "amount after compression molding", and the amount after drying in (4) was defined as the "amount after drying". The quantities in Equation 1 are as follows, and none of the quantities include the mass of the gold plate. [Evaluation Criteria] The average value of the five cards is 50% or more: Average value of 5 sheets is less than 50% and more than 30%: △ Average value of 5 sheets is less than 30%: ×

[0032]

number

[0033] <Evaluation of appearance defects (cracks)> For five sheets of each of the solid powder cosmetics obtained in each Example and Comparative Example, the appearance upon completion was visually judged by three evaluators. [Evaluation Criteria] No cracks were found on any of the five sheets. The maximum crack size observed is less than 1.0 mm. : △ The maximum crack size observed is 1.0 mm or more.

[0034] <Evaluation of appearance defects (shrinkage)> For five sheets of each of the solid powder cosmetics obtained in each Example and Comparative Example, the appearance upon completion was visually judged by three evaluators. [Evaluation Criteria] There are no gaps on the periphery of any of the five pieces. The maximum observed peripheral gap is less than 0.5 mm. The maximum observed peripheral gap is 0.5 mm or more and less than 1.0 mm. : △ The maximum observed peripheral gap is 1.0 mm or more.

[0035] <Evaluation of moisturizing sensation> A 20-member expert panel conducted a usability test on each sample, and each panel member rated it on a 5-point scale according to the absolute criteria below. The average score was calculated from the total scores of all panel members, and judged according to the following criteria. Specifically, each sample was spread once on the skin using an applicator (puff), and the moisturizing feel of the cosmetic on the skin was evaluated. (Score): (Evaluation result) 5: Very much 4: Feel 3: Somewhat 2: Barely felt 1: No feeling at all <Judgment criteria> (Average score): (Judgment) 4.5 points or more: ◎ 3.5 points or more and less than 4.5 points: ○ 2 points or more and less than 3.5 points: △ Less than 2 points: ×

[0036] [Table 1]

[0037] [Table 2]

[0038] *1 Leopard KL2 (manufactured by Chiba Flour Mills) *2 Amino acid-based oil gelling agent EB-21 (manufactured by Ajinomoto) *3 FHS-3A TALC JA-46R (manufactured by Daito Kasei Kogyo) *4 FHS-3 SERICITE FSE (manufactured by Daito Kasei Kogyo) *5 SOFT TALC (manufactured by Miyoshi Chemicals) *6 Sericite GMS-C (Kinseimatic) *7 XS66-B8226 (MOMENTIVE) *8 Cosmol 222 (manufactured by Nisshin Oillio Group) *9 Esterol DP-HIS (National Mimatsu) *10 PLANDOOL-H (manufactured by Nippon Fine Chemicals) *11 NIKKOL CIO-JP(OH SUNG CHEMICAL IND. CO., LTD) *12 ORGASOL 2002 EXD NAT COS (made by Arkema) *13 E+ 540 (made by ABC NANOTECH)

[0039] Examples 1 to 18 and Comparative Examples 1 to 16 (solid powder cosmetics) The solid powder cosmetic preparations shown in Table 1 were produced by the following production method. Each sample was evaluated by the above evaluation method, and the results are also shown in Table 1. [Manufacturing method] (1): Mix the cosmetic powders and oils listed in Table 1 or Table 2 uniformly. (2) Add a solvent to (1) and mix uniformly to form a slurry. (3): (2) is poured into a metal dish and compression molded at room temperature while aspirating the solvent for a total of 10 seconds or less. (4): (3) was dried at 50°C for 1 day to obtain a solid cosmetic preparation.

[0040] Examples 1 to 18, which contained polyurethane-79, were excellent in solvent removal efficiency, and no cracks or shrinkage were observed in appearance defects, and the compositions also had a good moist feeling. Comparative Example 1 was a composition in which polyurethane-79 was replaced with polyurethane-10, and the moist feeling was good, but the solvent removal efficiency was not good, and both cracks and shrinkage were observed. Comparative Examples 2 and 3 were compositions that did not contain polyurethane-79, and the moist feeling was good, but the solvent removal efficiency was not good, and both cracks and shrinkage were observed. Comparative Examples 4 and 5 were compositions that did not contain polyurethane-79 or fluorine-modified silicone-treated powder, and the solvent removal efficiency was inferior to Comparative Examples 2 and 3, and more severe appearance defects were observed. Comparative Examples 6 and 7 were compositions in which polyurethane-79 was replaced with a typical oil-based gelling agent, but the solvent removal efficiency was inferior, and Comparative Example 6 also had a poor moist feeling. Comparative Example 8 is a composition that does not contain polyurethane-79, and uses a water-holding oil agent selected from among ester oils, and uses isododecane as the solvent. The moist feeling was good, but the solvent removal efficiency was poor, and the appearance was not good. Comparative Example 9 is a composition in which the solvent was changed from Comparative Example 8 to water, and the solvent removal efficiency was good and the appearance was good, but the moist feeling was poor. Comparative Example 10 is a composition that does not contain fluorine-modified silicone-treated powder, and contains titanium oxide-coated mica, and the moist feeling, solvent removal efficiency, cracking, and shrinkage were all poor. Comparative Example 11 is a composition that does not contain fluorine-modified silicone-treated powder, and the moist feeling was good, but the solvent removal efficiency was poor, and the appearance was not good. Comparative Example 12 is a composition in which the fluorine-modified silicone-treated powder was replaced with a fluororesin, and the solvent removal efficiency was good, and the appearance was not cracked or shrinking, but the moist feeling was poor. Comparative Examples 13 and 14 were compositions in which only ester oil was used as a solvent for polyurethane-79, and the remaining ester oil was replaced with hydrocarbon oil. The composition had a good moist feeling, but the solvent removal efficiency was poor, and the appearance was not good. Comparative Example 15 was a composition that did not contain polyurethane-79, and the ester oil was replaced with hydrocarbon oil. The composition had a good moist feeling, but the solvent removal efficiency was poor, and the appearance was not good.Comparative Example 16 is a composition containing no spherical powder, and although it had a good moist feel, the solvent removal efficiency was poor and the appearance was not good.

[0041] Examples of formulations for the solid powder cosmetic preparation according to the present invention are given below.

[0042] Formulation example 1: Powder Ingredients (mass%) 1: Polyurethane-79 · Tri(caprylic / capric acid)glyceryl *14 0.1% 2: 2-Ethylhexyl paramethoxycinnamate 2% 3: Diisostearyl malate 3% 4: Tocopherol 0.1% 5: Fluorine-modified silicone-treated talc *3 remaining 6: Fluorine-modified silicone-treated sericite *4 25% 7: Talc 12% 8: Silicone-treated mica 12% 9: Boron nitride 5% 10: (Diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer 7% 11: Dimethicone 5% 12: Titanium dioxide 3% 13: Zinc oxide 3% 14: Phenoxyethanol 0.2% Total 100% *14 OILKEMIA 5S CC (manufactured by LUBRIZOL) (Manufacturing method) A powder was obtained in the same manner as in Example 1 above, using water as the solvent in an amount of 70% by mass relative to 100% by mass of the cosmetic base.

[0043] Formulation example 2: Foundation Ingredients (mass%) 1: Polyurethane-79 · Tri(caprylic acid / capric acid)glyceryl ※14 0. 2% 2: Cetyl ethylhexanoate 2% 3: Diisostearyl malate 2% 4: Tocopherol 0.1% 5: Fluorine-modified silicone-treated talc *3 remaining 6: Fluorine-modified silicone-treated sericite *4 25% 7: Amino acid-treated talc 20% 8: Mica 15% 9: Polymethylmethacrylate 15% 10: Barium sulfate 5% 11: Titanium dioxide 5% 12: Zinc oxide 5% 13: Yellow iron oxide 1.0% 14: Bengala 0.2% 15: Black iron oxide 0.015% 16: Methylparaben 0.2% 17: Ethylparaben 0.1% Total 100% (Manufacturing method) A foundation was obtained in the same manner as in Example 1 above, using 50% by mass of hydrogenated polyisobutene as the solvent relative to 100% by mass of the cosmetic base.

[0044] Formulation example 3: Cheek Ingredients (mass%) 1: Polyurethane-79 · Tri(caprylic / capric acid)glyceryl *14 0.2% 2: Cetyl ethylhexanoate 2% 3: Isostearyl malate 2.7% 4: Tocopherol 0.1% 5: Fluorine-modified silicone-treated talc *3 remaining 6: Fluorine-modified silicone-treated sericite *4 25% 7: Silicone-treated mica 23% 8: Nylon-6 20% 9: Dimethicone 6% 10: (Dimethicone / vinyl dimethicone) crosspolymer 1% 11: Titanium dioxide 0.2% 12: Yellow iron oxide 0.2% 13: Red No. 226 0.2% 14: Titanium oxide coated mica 5% 15: Niacinamide 5% 16: Phenoxyethanol 0.2% Total 100% (Manufacturing method) A 50% aqueous solution of ethanol was used as the solvent in an amount of 80% by mass relative to 100% by mass of the cosmetic base, and a blush was obtained in the same manner as in Example 1 above.

[0045] Formulation example 4: Eye shadow Ingredients (mass%) 1: Polyurethane-79 · Tri(caprylic / capric acid)glyceryl *14 3% 2: Ethyl acetate 2% 3: Isostearyl malate 7.1% 4: Polyglyceryl triisostearate-2 10% 5: Tocopherol 0.1% 6: Fluorine-modified silicone-treated talc *3 remaining 7: Silicone-treated sericite 10% 8: Hexamethylene diisocyanate / trimethylol hexyl lactone crosslinked polymer 20% 9: Dimethicone 3% 10: Titanium dioxide 0.2% 11: Yellow iron oxide 0.2% 12: Red No. 226 0.2% 13: Titanium oxide coated mica 30% 14: Methylparaben 0.2% 15: Ethylparaben 0.1% Total 100% (Manufacturing method) A blush was obtained in the same manner as in Example 1 above, using isododecane as the solvent in an amount of 100% by mass relative to 100% by mass of the cosmetic base.

[0046] Formulation Examples 1 to 4 had high solvent removal efficiency, were free of shrinkage or cracking, had a good appearance, and had a moist feel on the skin.

Claims

1. The following components (A) to (D) (A) Polyurethane-79 (B) Fluorine-modified silicone-treated powder (C) Ester oil (D) Spherical powder (excluding component (B)) A solid powder cosmetic is obtained by removing the solvent from a mixture of a cosmetic base containing the above and a solvent.

2. 2. The solid powder cosmetic preparation according to claim 1, wherein component (C) is in a paste form (semi-solid at 20°C and having a melting point of 25 to 70°C).

3. 2. The solid powder cosmetic preparation according to claim 1, wherein the solvent is a hydrocarbon oil.

4. 4. The solid powder cosmetic according to claim 1, wherein the blending amount of said component (A) in the solid powder cosmetic is 0.01 to 1.5% by mass.

5. In the process of producing a powdered solid cosmetic product, a cosmetic base and a volatile solvent are mixed to form a slurry, and the volatile solvent is removed to form the product. (1) mixing the following component (A) with all or a part of the following component (C); (A) Polyurethane-79 (C) Ester oil (2) mixing (1) with the following ingredients: (2-1) When all of the component (C) is mixed in (1): (B) Fluorine-modified silicone-treated powder (D) Spherical powder (excluding component (B)) (2-2) In the case where component (C) is partially mixed in (1): (B) Fluorine-modified silicone-treated powder (C) Ester oil balance (D) Spherical powder (excluding component (B)) (3) mixing (2) with a volatile solvent; (4) A step of filling the slurry obtained in (3) into a container, removing the volatile solvent, and molding the mixture. A method for improving the efficiency of removal of a volatile solvent comprising:

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