Method for producing a solid powder cosmetic composition

Abstract

A production method for a solid composition, that includes: a step in which a mixture is prepared that includes a powdered wax and a liquid non-volatile hydrocarbon oil; a step in which a non-volatile solvent is added to the mixture and a slurry is prepared; a step in which the slurry is suctioned and a container is filled; and a step in which the slurry inside the container is heated to a temperature that is at least the melting temperature of the wax.

Description

Technical Field

[0001] The present invention relates to a method for producing a solid composition, a solid composition, and a cosmetic.

Background Art

[0002] Patent Document 1 discloses a solid powder cosmetic obtained by mixing a cosmetic base material containing an organic laminated powder and an oil agent with a solvent such as silicone oil, filling the mixture into a container, and removing the solvent in a liquid state.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Non-volatile solvents such as silicone oil are difficult to remove during the production of cosmetics and may reduce the quality of the resulting cosmetics.

[0005] An object of the present invention is to provide a solid composition that facilitates the removal of non-volatile solvents and suppresses a decrease in the quality of cosmetics.

Means for Solving the Problems

[0006] A method for producing a solid composition according to one aspect of the present invention includes a step of preparing a mixture containing powdery wax and liquid non-volatile hydrocarbon oil, a step of adding a non-volatile solvent to the mixture to prepare a slurry, a step of sucking and filling the slurry into a container, and a step of heating the slurry in the container to a temperature not lower than the melting temperature of the wax. Powdered cosmetics 組成物の製造方法は、粉末状のワックス及び At 20℃ 液状の不揮発性炭化水素油を含む混合物を調製する工程と、前記混合物に不揮発性溶媒を添加してスラリーを調製する工程と、前記スラリーを吸引し且つ容器に充填する工程と、前記容器内の前記スラリーを前記ワックスの溶融温度以上の温度に加熱する工程と、を含 Furthermore, the average particle size of the wax in the mixture contained in the slurry is 1 μm or more and 1000 μm or less. 。

Effects of the Invention

[0007] According to one aspect of the present invention, it is possible to provide a solid composition that facilitates the removal of non-volatile solvents and suppresses the deterioration of cosmetic quality. [Brief explanation of the drawing]

[0008] [Figure 1] This is a flowchart illustrating the method for producing a solid composition according to the embodiment. [Modes for carrying out the invention]

[0009] The embodiments of the present invention will be described in detail below.

[0010] <Method for producing solid compositions> Figure 1 is a flowchart illustrating the method for producing a solid composition according to this embodiment. The method for producing a solid composition according to this embodiment includes the step of preparing a mixture containing powdered wax and liquid non-volatile hydrocarbon oil (Figure 1, step S1). In this specification, a solid composition refers to a material obtained by molding a predetermined composition into a solid.

[0011] The powdered wax may be prepared by crushing solid wax into a powder, or it may be wax that has been prepared into a powder from the beginning. The average particle size of the powdered wax is arbitrary, but preferably 1 μm to 1000 μm, and more preferably 10 μm to 600 μm. Here, the average particle size is the particle size at which the cumulative distribution based on volume, measured by laser diffraction and scattering, reaches 50%. Furthermore, the average particle size of the wax refers to the average particle size before filling the slurry, as described later.

[0012] The melting point of the wax is not particularly limited, but is preferably 55°C to 90°C, more preferably 60°C to 85°C, and even more preferably 65°C to 80°C.

[0013] The components of the wax are not particularly limited, and examples include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, privet wax, whale wax, montan wax, rice bran wax (rice wax), kapok wax, Japanese wax, lanolin acetate, liquid lanolin, sugarcane wax, isopropyl lanolin fatty acid, hexyl laurate, reduced lanolin, jojoba ester (hydrogenated jojoba oil), hard lanolin, shellac wax, beeswax, microcrystalline wax, paraffin wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, fatty acid glycerides, hydrogenated castor oil, POE hydrogenated lanolin alcohol ether, sucrose fatty acid ester (sucrose tetrastearate triacetate), etc. These components may be used individually or in combination of two or more.

[0014] The amount of wax added is arbitrary, but can be 0.5% by mass or more and 10% by mass or less relative to the resulting solid composition, preferably 1% by mass or more and 9% by mass or less, more preferably 1.5% by mass or more and 8% by mass or less, and even more preferably 2% by mass or more and 7% by mass or less.

[0015] The liquid non-volatile hydrocarbon oil exhibits a kinematic viscosity of 5 cSt (centistokes) or higher. The viscosity of the non-volatile hydrocarbon oil is not particularly limited, but is preferably 10 mPa·s to 50 mPa·s at 20°C, more preferably 15 mPa·s to 45 mPa·s, and even more preferably 20 mPa·s to 40 mPa·s.

[0016] The components of the liquid non-volatile hydrocarbon oil are not particularly limited, but include, for example, at least one non-volatile hydrocarbon oil selected from paraffin oil, mineral oil, saturated or unsaturated dodecane, saturated or unsaturated tridecane, saturated or unsaturated tetradecane, saturated or unsaturated pentadecane, saturated or unsaturated hexadecane, or mixtures thereof. Among these non-volatile hydrocarbon oils, paraffin oil and mineral oil are preferred.

[0017] Examples of paraffin oils include, for example, liquid paraffin. Examples of mineral oils include, for example, hydrogenated polydecene and hydrogenated polyisobutene. Among these, hydrogenated polydecene is more preferred. Here, hydrogenated polydecene refers to a hydrogenated product of an α-olefin oligomer.

[0018] The blending amount of the non-volatile hydrocarbon oil is arbitrary, but it can be 0.5% by mass or more and 20% by mass or less, preferably 1% by mass or more and 15% by mass or less, more preferably 2% by mass or more and 10% by mass or less, and even more preferably 3% by mass or more and 8% by mass or less, based on the resulting solid composition.

[0019] Also, the mass ratio of the non-volatile hydrocarbon oil to the wax is not particularly limited, but is preferably 1 or more and 6 or less, more preferably 1.3 or more and 5 or less, and even more preferably 1.5 or more and 4 or less.

[0020] The mixture containing the powdery wax and the liquid non-volatile hydrocarbon oil may contain spherical powder. In this specification, the spherical powder refers to powder having a substantially spherical shape and an aspect ratio (ratio of major diameter to minor diameter) of 1.2 or less.

[0021] The blending amount of the spherical powder is arbitrary, but is preferably 0.1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and even more preferably 3% by mass or more and 8% by mass or less, based on the resulting solid composition.

[0022] The average particle diameter of the spherical powder is arbitrary, but is preferably 1 μm or more and 10 μm or less, more preferably 2 μm or more and 9 μm or less, and even more preferably 3 μm or more and 8 μm or less. Here, the average particle diameter is the particle diameter at which the volume-based cumulative distribution measured by the laser diffraction / scattering method is 50%.

[0023] In the method for producing the solid composition according to this embodiment, the mixture may contain components other than those described above, as long as they do not impair the effects of the present invention. Examples of components other than those described above include powders other than the spherical powder, colorants, surfactants, antioxidants, humectants, and the like.

[0024] Other powder components besides the spherical powder mentioned above are arbitrary and include, for example, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, rose mica, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, silicone powder, magnesium myristate, zinc myristate, calcium palmitate, aluminum stearate, chlorphenesin, boron nitride, etc. These powders may be used individually or in mixtures of two or more. The amount of powder used is arbitrary.

[0025] The components of the colorant are arbitrary and include, for example, red iron oxide, yellow iron oxide, black iron oxide, inorganic white pigments (e.g., zinc oxide); inorganic red pigments (e.g., iron titanate); inorganic purple pigments (e.g., mango violet, cobalt violet); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate); inorganic blue pigments (e.g., ultramarine, Prussian blue); metal powder pigments (e.g., aluminum powder, copper powder); organic pigments such as zirconium, barium, or aluminum lake. Examples include organic pigments such as Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404; Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3, and Blue 1; and natural pigments (e.g., chlorophyll, β-carotene). These colorants may be used individually or in combination of two or more. The amount of colorant used is arbitrary.

[0026] The active ingredients are arbitrary and include, for example, hydrogenated lecithin, sorbitan laurate, sorbitan palmitate, sorbitan oleate, sorbitan stearate, sorbitan isostearate, sorbitan sesquioleate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquiisostearate, etc. These active ingredients may be used individually or in combination of two or more. The amount of active ingredients used is arbitrary.

[0027] The antioxidant component is arbitrary, and examples include ascorbic acid, α-tocopherol, dibutylhydroxytoluene, and butylhydroxyanisole. These antioxidants may be used individually or in combination of two or more. The amount of antioxidant used is also arbitrary.

[0028] The ingredients of the moisturizer are optional and include, for example, polyhydric alcohols (such as 1,3-butylene glycol), parahydroxybenzoic acid esters, phenoxyethanol, octoxyglycerin, benzoic acid, salicylic acid, carbolic acid, sorbic acid, parachlormethacresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, etc.

[0029] The method for producing the solid composition according to this embodiment includes the step of preparing a slurry by adding a non-volatile solvent to a mixture (Figure 1, step S2). In this specification, slurry refers to a suspension in which a mixture containing powdered wax and liquid non-volatile hydrocarbon oil is dispersed in a non-volatile solvent. The non-volatile solvent is a solvent with a kinematic viscosity of 5 cSt (centistokes) or higher.

[0030] The components of the non-volatile solvent are not particularly limited, but are preferably silicone oil. Here, silicone oil refers to an oily silicone with a relatively low degree of polymerization.

[0031] The silicone oil is not particularly limited and examples include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, and methylhydrogenpolysiloxane. These components may be used individually or in combination of two or more. Among these silicone oils, dimethylpolysiloxane 6CS (INCI name) is preferred.

[0032] Furthermore, non-volatile solvents may be added to the mixture in any ratio.

[0033] The method for producing the solid composition according to this embodiment includes the steps of aspirating the slurry and filling it into a container (Figure 1, step S3). In this specification, aspirating the slurry means removing the non-volatile solvent in the slurry by suction.

[0034] The method of aspirating the slurry and filling it into a container is not particularly limited. The slurry may be filled into the container after aspirating the solvent, the slurry may be filled into the container while aspirating the solvent, or the slurry may be filled into the container and then aspirated.

[0035] As for the method of aspirating the slurry and filling it into a container, for example, a method can be used in which the slurry is poured into a tray, compressed and molded using a molding head, and simultaneously aspirated from the back surface of the molding head. Alternatively, a method can be used in which the slurry is poured into a tray and degassed in a reduced-pressure environment using a vacuum pump or the like. Furthermore, the commonly used wet method can be applied.

[0036] The method for producing the solid composition according to this embodiment includes a step of heating the slurry in a container to a temperature above the melting point of the wax (Figure 1, step S4). In this specification, the melting point of the wax refers to the melting point of the wax (the temperature at which the wax melts). Heating to a temperature above the melting point means heating until the wax in the slurry is completely melted.

[0037] In the method for producing a solid composition according to this embodiment, the compatibility between the non-volatile hydrocarbon oil and the non-volatile solvent in the slurry can be reduced by adding a non-volatile solvent to a mixture containing powdered wax and liquid non-volatile hydrocarbon oil to prepare a slurry. This makes it easy to remove the non-volatile solvent during the molding of the solid composition. As a result, less non-volatile solvent remains in the obtained solid composition.

[0038] Furthermore, in the method for producing the solid composition according to this embodiment, a slurry is formed in which powdered wax mixed with liquid non-volatile hydrocarbon oil is dispersed in a non-volatile solvent. By heating such a slurry to a temperature above the melting point of the wax, with the non-volatile solvent removed during the molding of the solid composition, the resulting solid composition can have the melted wax dispersed within it.

[0039] In the method for producing a solid composition according to this embodiment, using such a solid composition in products such as cosmetics makes it easier to remove non-volatile solvents and suppresses deterioration of product quality.

[0040] In the method for producing the solid composition according to this embodiment, as described above, by using a wax with an average particle size of 1 μm or more and 1000 μm or less, the removal of non-volatile solvents can be facilitated, and a deterioration in the quality of the resulting solid composition can be suppressed.

[0041] In the method for producing the solid composition according to this embodiment, as described above, by using a wax and non-volatile hydrocarbon oil in which the mass ratio of the wax to the non-volatile hydrocarbon oil is adjusted to 1 or more and 6 or less, the removal of the non-volatile solvent becomes even easier, and the deterioration of the quality of the resulting solid composition can be further suppressed.

[0042] Furthermore, in the method for producing the solid composition according to this embodiment, as described above, the powdered wax and non-volatile hydrocarbon oil become easier to mix, which further facilitates the removal of the non-volatile solvent and further suppresses the deterioration of the quality of the resulting solid composition.

[0043] In the method for producing the solid composition according to this embodiment, as described above, by using a non-volatile hydrocarbon oil with a viscosity of 10 mPa·s or more and 50 mPa·s or less at 20°C, the removal of the non-volatile solvent becomes even easier, and the deterioration of the quality of the resulting solid composition can be further suppressed.

[0044] Furthermore, in the method for producing the solid composition according to this embodiment, as described above, the powdered wax and the non-volatile hydrocarbon oil become easier to mix, thereby further reducing the compatibility between the non-volatile hydrocarbon oil and the non-volatile solvent in the slurry. This makes it easier to remove the non-volatile solvent during the molding of the solid composition, and less non-volatile solvent remains in the resulting solid composition.

[0045] In the method for producing the solid composition according to this embodiment, as described above, by using hydrogenated polydecene as the non-volatile hydrocarbon oil, the removal of the non-volatile solvent becomes even easier, and the deterioration of the quality of the resulting solid composition can be further suppressed.

[0046] In the method for producing the solid composition according to this embodiment, as described above, by using silicone oil as a non-volatile solvent, the non-volatile solvent can be further removed from the solid composition because silicone oil has poor compatibility with non-volatile hydrocarbon oils. Therefore, the deterioration of the quality of the product using the obtained solid composition can be further suppressed.

[0047] In the method for producing a solid composition according to this embodiment, as described above, if the mixture contains spherical powder, the removal of the non-volatile solvent becomes even easier, and the deterioration of the quality of the resulting solid composition can be further suppressed.

[0048] In the method for producing the solid composition according to this embodiment, as described above, by using spherical powder with an average particle size of 1 μm or more and 10 μm or less, the removal of non-volatile solvents becomes even easier, and the deterioration of the quality of the resulting solid composition can be further suppressed.

[0049] <Solid composition> The solid composition according to this embodiment is produced by the method for producing a solid composition described above. Specifically, the solid composition according to this embodiment can be obtained by performing the following steps: preparing a mixture containing powdered wax and liquid non-volatile hydrocarbon oil; adding a non-volatile solvent to the mixture to prepare a slurry; aspirating the slurry and filling it into a container; and heating the slurry in the container to a temperature above the melting point of the wax.

[0050] As described above, the solid composition obtained in this way contains melted wax dispersed within the solid composition. Therefore, by using such a solid composition in products such as cosmetics, it is possible to suppress the deterioration of product quality.

[0051] The solid composition according to this embodiment is obtained by heating a slurry prepared by adding a non-volatile solvent to a mixture containing powdered wax and liquid non-volatile hydrocarbon oil to a temperature above the melting point of the wax. However, the powdered state of the wax disappears in the obtained solid composition. Therefore, even if the state of the solid composition before production (for example, the properties of a mixture containing powdered wax and liquid non-volatile hydrocarbon oil, or a slurry prepared by adding a non-volatile solvent to the mixture) is analyzed, it is currently technically difficult to determine the structure or characteristics of the solid composition according to this embodiment.

[0052] Furthermore, even if it were possible to analyze the structure or properties of the solid composition according to this embodiment by some method, given the need for speed and other factors inherent in patent applications, the task of identifying the structure or properties of the solid composition according to this embodiment would require an excessively large economic expenditure and amount of time. In other words, there are impossible and impractical circumstances that make it impossible to specify the structure or properties of the solid composition according to this embodiment.

[0053] <Cosmetics> The cosmetic composition according to this embodiment includes the solid composition described above. Since the solid composition has the effect of suppressing the deterioration of the quality of the cosmetic composition, it is suitably used in solid powder cosmetics such as foundation, eyeshadow, blush, body powder, perfume powder, baby powder, pressed powder, deodorant powder, and face powder, taking advantage of this effect. [Examples]

[0054] The present invention will be further described below with reference to examples. Note that the values ​​for each component in Tables 1 and 2 are in units of "mass%". Furthermore, various tests and evaluations were carried out according to the methods described below.

[0055] <Test specimen> After mixing the powders in a Henschel mixer, dimethylpolysiloxane 6CS, a solvent, was added to the resulting mixture to prepare a slurry. The obtained slurry was poured into a mold (middle dish) while suctioning. The slurry filled in the mold was heated in a constant temperature bath at 70°C for 1 hour. After that, the mold was removed from the constant temperature bath and left at room temperature for 1 hour, and the resulting molded body (solid) was used as the test specimen.

[0056] <Solvent evaporation> The ease of removing the non-volatile solvent (solvent removal) was evaluated by observing how much the volatile solvent spread onto the tissue when the obtained slurry was aspirated. The evaluation criteria for solvent removal are shown below. A and B were evaluated as good solvent removal, and a C was evaluated as poor solvent removal. A: It spreads very well. B: Slightly good spread C: Poor spread

[0057] <Surface condition> The surface condition of the obtained molded body (solid) was observed visually. The evaluation criteria for the surface condition are shown below. A and B indicate a good surface condition, while a C indicates a poor surface condition. A: The surface is very smooth. B: The surface is somewhat smooth. C: The surface is uneven.

[0058] <Impact Resistance> The test specimen was dropped from a height of 30 cm onto a metal plate, and the number of drops until it could no longer maintain its position, such as falling out of the tray, was measured. The number of tests (N) was 3. The evaluation criteria for impact resistance are shown below. A and B ratings indicated good impact resistance, while a C rating indicated poor impact resistance. A: More than 10 times B: 5 to less than 10 times C: Less than 5 times

[0059] Table 1 shows the component formulations and evaluation results for the following examples and comparative examples.

[0060] [Table 1]

[0061] In Table 1, the specifications of the functional powder (pearl agent) are as follows: • Synthetic fluorphlogopite • Titanium oxide • Tin oxide *1: TWINCLEPEARL (registered trademark) 400 (manufactured by Nippon Koken Kogyo Co., Ltd.) • Synthetic fluorphlogopite • Titanium oxide • Tin oxide *2: TWINCLEPEARL(registered trademark) 500 (manufactured by Nippon Koken Kogyo Co., Ltd.)

[0062] Table 1 shows the specifications of the waxes used in the formulation as follows: • Jojoba esters: Flora Ester 70HG (manufactured by FLORATECH) (average particle size 10-100 μm)

[0063] Table 1 shows the specifications of the non-volatile hydrocarbon oils to be blended as follows: • Hydrogenated polydecene:olefin oligomer 30 (manufactured by Nikko Chemicals Co., Ltd.) (viscosity 25-37 mPa·s at 20°C) • Mineral oil: Liquid paraffin (viscosity 21-26 mPa·s at 20°C) • Vaseline: semi-solid Triethylhexanoin: RA-G-308 (manufactured by Nippon Seika Co., Ltd.) (viscosity at 20°C: 20-35 mPa·s)

[0064] In Table 1, the specifications of the non-volatile solvents to be blended are as follows: • Dimethylpolysiloxane 6CS:Silicone KF-96A-6T (added later) (manufactured by Shin-Etsu Chemical Co., Ltd.) In Table 1, dimethylpolysiloxane 6CS was added to the mixture as a solvent, as described above. However, some of it was removed by suction, and it remained as an oily component in the final solid.

[0065] [Table 2]

[0066] In Table 2, the specifications of the functional powder (pearl agent) are the same as those of the synthetic fluorphlogopite, titanium dioxide, and tin oxide in Table 1 (*1, *2).

[0067] Table 2 shows the specifications of the waxes used in the formulation as follows: • Jojoba ester*1: Flora ester 70HG (manufactured by FLORATECH) (melting point 65°C, average particle size 550 μm) • Jojoba ester*2: Flora ester 70HG (manufactured by FLORATECH) (melting point 65°C, average particle size 10-100 μm) • Paraffin wax: PressAid® (manufactured by PressPerse) (melting point 105-125°C, average particle size 6-7.5 μm) Palmitic acid: Melting point 58-68°C, average particle size 800 μm • Polyethylene wax: Performalene PL (manufactured by Newphase Technologies) (melting point 83-90°C, average particle size 870 μm) Myristyl myristate: Melting point 41-45°C, average particle size 100-300 μm • Sucrose tetrastearate triacetate: Sugar wax (registered trademark) A-10E (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) (melting point 44-50°C, average particle size 500 μm) Paraffin microcrystalline wax: Permic 160 (manufactured by Nikko Rica Co., Ltd.) (melting point 66-73°C, average particle size 3000-5000 μm)

[0068] In Table 2, the specifications of the non-volatile hydrocarbon oil used are the same as those of the hydrogenated polydecene in Table 1.

[0069] In Table 2, the specifications of the non-volatile solvent used are the same as those of dimethylpolysiloxane 6CS in Table 1.

[0070] Furthermore, in Table 2, the particle size of the components refers to the average particle size of the wax before the slurry is filled into the mold.

[0071] Tables 1 and 2 show that Examples 1-9 exhibited good solvent removal. Of these, Examples 3-9 had even better surface conditions, and Examples 3, 4, and 7 showed particularly good impact resistance.

[0072] In contrast, Comparative Examples 1-3 exhibited poor solvent removal, and of these, Comparative Example 3 further showed poor surface condition and impact resistance.

[0073] These results indicate that a method for producing a solid composition, comprising the steps of preparing a mixture containing powdered wax and liquid non-volatile hydrocarbon oil, preparing a slurry by adding a non-volatile solvent to the mixture, aspirating the slurry and filling it into a container, and heating the slurry in the container to a temperature above the melting point of the wax, makes it easier to remove the non-volatile solvent and suppresses the deterioration of the quality of the cosmetic product.

[0074] Although embodiments of the present invention have been described above, the present invention is not limited to any particular embodiment, and various modifications and changes are possible within the scope of the invention as described in the claims.

[0075] This application claims priority based on Japanese Patent Application No. 2021-69865, filed on 16 April 2021, which is incorporated herein by reference in its entirety.

Claims

1. A step of preparing a mixture containing powdered wax and a non-volatile hydrocarbon oil that is liquid at 20°C, The steps include: preparing a slurry by adding a non-volatile solvent to the mixture; The steps include aspirating the slurry and filling it into a container, The process includes heating the slurry in the container to a temperature above the melting point of the wax, The average particle size of the wax in the mixture contained in the slurry is 1 μm or more and 1000 μm or less. A method for producing a solid powder cosmetic composition.

2. A method for producing a solid powder cosmetic composition according to claim 1, wherein the mass ratio of the non-volatile hydrocarbon oil to the wax is 1 or more and 6 or less.

3. A method for producing a solid powder cosmetic composition according to claim 1 or 2, wherein the viscosity of the non-volatile hydrocarbon oil is 10 mPa·s or more and 50 mPa·s or less at 20°C.

4. A method for producing a solid powder cosmetic composition according to any one of claims 1 to 3, wherein the non-volatile hydrocarbon oil is hydrogenated polydecene.

5. A method for producing a solid powder cosmetic composition according to any one of claims 1 to 4, wherein the non-volatile solvent is silicone oil.

6. A method for producing a solid powder cosmetic composition according to any one of claims 1 to 5, wherein the mixture contains spherical powder.

7. A method for producing a solid powder cosmetic composition according to claim 6, wherein the average particle size of the spherical powder is 1 μm or more and 10 μm or less.

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