JP2007176935A - Solid powdery cosmetic material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid powdery cosmetic material having smooth feeling in use without generating time-dependent dullness after its application. <P>SOLUTION: The solid powdery cosmetic material comprises 0.01-30 mass% of (a) flaky glass in which colorant component particles are dispersed and 5-80 mass% of (b) powder having a hydrophobic surface except the flaky glass. The flaky glass has 0.1-3 μm average thickness, 1-300 μm average particle size and 5-300 average aspect ratio. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solid powder cosmetic having no color dullness over time and having a smooth coating feeling.

  Conventionally, various properties have been required for solid powder cosmetics. In particular, in point makeup cosmetics where the color tone is most important, such as eye shadows and blushers, it is one of the most important functions that the color fading of the cosmetic coating film does not occur over time. . Much research has been done to enhance this function.

The solid powder cosmetic is composed of extender pigments such as talc and mica, colored pigments such as iron oxide, oil agents, antioxidants, and antifungal agents. The color dullness of the solid powder cosmetic over time is mainly caused by the progress of wetting of the colored pigment by sweat or sebum. For this reason, attempts have been made to prevent color dullness over time by suppressing the wetting of the colored pigment. For example, attempts have been made to coat the surface of colored pigments with various water and oil repellent compounds such as silicone compounds and fluorine compounds, or to coat with silica (see Patent Documents 1 to 5).
Japanese Patent Laid-Open No. 5-25019 JP-A-5-32525 JP-A-5-39436 JP-A-5-93153 JP-A-5-237360

  However, it is substantially impossible to completely cover the surface of the colored pigment by the coating treatment, and the pigment is exposed everywhere on the surface. When there was a portion where the pigment was exposed, wetting progressed from that portion, and thus the color dullness over time could not be completely suppressed. On the other hand, such wetting is reduced by increasing the coating treatment agent. However, in this case, an excessive concavo-convex structure is formed on the surface layer of the pigment, and as a result, the feeling of use of the cosmetic material becomes rough, the problem is that the spread is not good and the blur cannot be performed well.

  In view of the above circumstances, one of the objects of the present invention is to provide a solid powder cosmetic that has no color dullness over time and has a smooth coating feeling.

  In order to achieve the above object, as a result of intensive studies, the present inventors have formulated a composite color pigment in which a color pigment is contained in flaky glass, and a hydrophobic powder and / or a hydrophobized powder. As a result, the inventors have found that the above object can be achieved, and have completed the present invention.

  That is, the solid powder cosmetic of the present invention comprises (a) 0.01% by mass to 30% by mass of flaky glass in which coloring component particles are dispersed, and (b) a powder other than the flaky glass. And the surface thereof contains 5% by mass to 80% by mass of hydrophobic powder, and the flaky glass has an average thickness in the range of 0.1 μm to 3 μm and an average particle size in the range of 1 μm to 300 μm. The average aspect ratio is in the range of 5 to 300.

  According to the present invention, it is possible to obtain a solid powder cosmetic that has no color dullness over time and has a smooth coating feeling.

  Hereinafter, embodiments of the present invention will be described.

[Solid powder cosmetic]
The solid powder cosmetic of the present invention is (a) 0.01% by mass to 30% by mass of flaky glass in which colored component particles are dispersed, and (b) a powder other than the flaky glass. The surface contains 5% by mass to 80% by mass of hydrophobic powder. The flaky glass has an average thickness in the range of 0.1 μm to 3 μm, an average particle size in the range of 1 μm to 300 μm, and an average aspect ratio in the range of 5 to 300. Hereinafter, the flaky glass may be referred to as “flaky glass (A)”, and the hydrophobic powder may be referred to as “hydrophobic powder (B)”.

A typical flaky glass (A) comprises a transparent metal oxide base material and particles of coloring components dispersed therein. A typical example of the coloring component (color pigment) is ultramarine. In this specification, “ultraviolet” includes a pigment represented as sulfur-containing sodium-aluminosilicate (Na ₆ Al ₆ Si ₆ O ₂₄ S _x ), which is naturally produced or artificially synthesized. There are ultramarine blues with various colors such as blue, green, purple, and pink depending on the amount of sulfur, but blue to blue-violet are common. Examples of the dye name include CI77007, CI77013, Pigment Blue 29, Pigment Green 24, Pigment Violet 15, and the like.

  The coloring component particles (for example, ultramarine blue) are dispersed inside the glass and are not substantially exposed on the surface of the glass. It is suppressed. In addition, since the outer shape of the flaky glass (A) is scaly, it has characteristics such that it hardly aggregates and is easily aligned and aligned in parallel with the coating surface. Therefore, the cosmetic of the present invention containing flaky glass (A) has a smooth coating feeling.

  Examples of coloring components other than ultramarine blue include inorganic pigments such as yellow iron oxide, bengara, black iron oxide, manganese violet, bitumen, cobalt blue, titanium yellow, carbon black, yellow No. 4 Al lake, yellow No. 203 Ba lake. And rake dye powders.

  Preferred examples of the transparent metal oxide constituting the flaky glass (A) include silicon dioxide, aluminum sesquioxide, zirconium oxide, and titanium oxide.

  The particle size of the ultramarine particles used in the flaky glass (A) is usually in the range of 30 nm to 3000 nm. When the particle size is smaller than 30 nm, coloring is weak. If the particle size is larger than 3000 nm, ultramarine particles do not enter the flaky glass well, and the surface of the ultramarine particles is exposed. As a result, the effects of the present invention relating to dullness and feel are reduced. The particle size of the ultramarine particles is preferably in the range of 50 nm to 2000 nm.

  The flaky glass (A) has an average thickness of 0.1 to 3 μm, an average particle diameter of 1 to 300 μm, and an average aspect ratio of 5 to 300. Here, the average thickness was determined as follows. First, observe a large number of flake glasses with a scanning electron microscope, and identify the images in which the plane of the flake glasses stands almost perpendicular to the imaged surface. Observed at high magnification, the distance between the two planes of the flakes (the length in a direction substantially perpendicular to the plane) was measured. And the measured value of the distance between two planes was made into the thickness of the flaky glass. The thickness of 20 pieces of flaky glass was measured, and the arithmetic average was defined as the average thickness. JSM-T330A manufactured by JEOL Ltd. was used for the scanning electron microscope, and a micron reader MCR manufactured by JEOL Ltd. was used for the length measurement. The average particle diameter is a 50% particle diameter D50 of the particle diameter of the flaky glass measured using a laser diffraction particle size distribution analyzer (Microtrack II, manufactured by Nikkiso). The average aspect ratio is a value obtained by dividing the average particle diameter by the average thickness.

  If the average thickness of the flaky glass is less than 0.1 μm, problems such as difficulty in production and easy crushing occur. On the other hand, when the average thickness exceeds 3 μm, the feeling of use deteriorates, for example, a feeling of roughness occurs. If the average particle size of the flaky glass is less than 1 μm, the flaky glass is likely to be aggregated, which tends to cause unevenness. On the other hand, when the average particle size exceeds 300 μm, the flaky glass is easily crushed when blended as a filler, and when blended with a cosmetic, the feeling of use is deteriorated, for example, a feeling of roughness occurs. When the average aspect ratio of the flaky glass is less than 5, characteristics as spherical particles begin to appear, and aggregation tends to occur. On the other hand, if the average aspect ratio exceeds 300, it is crushed when blended as a filler, the particle size becomes non-uniform, and unevenness tends to occur.

  The flaky glass (A) has an average thickness in the range of 0.2 to 2.5 μm, an average particle diameter in the range of 8 to 300 μm, and an average aspect ratio in the range of 8 to 200. preferable. The flaky glass (A) has an average thickness in the range of 0.5 to 2.0 μm, an average particle diameter in the range of 8 to 50 μm, and an average aspect ratio in the range of 8 to 50. preferable.

  The amount of the coloring component (for example, ultramarine) contained in the flaky glass (A) is 5 to 60% by mass (hereinafter, when the content is simply described as “%”, it means “% by mass”). It is preferably in the range, and more preferably in the range of 10 to 50%. When the content of the coloring component is 5% or less, the color is thin and the coloring power is weak. When the content is 60% or more, it is exposed from the flaky glass or aggregated in the flaky glass, and the effects of the present invention relating to color dullness and feel are reduced.

  The manufacturing method of flake shaped glass (A) is not specifically limited. As a method for producing a metal oxide of a base material, for example, a method by a colloid process using a metal oxide colloid solution, a method by a so-called sol-gel method using a metal compound solution such as a metal alkoxide, an alkali silicate solution (water glass Etc.) can be applied. For example, a method described in JP-A-1-9803 using a sol-gel method may be applied. In this method, ultramarine fine particles are dispersed in a solution of a metal compound (for example, metal alkoxide or metal organic acid salt) or a metal oxide sol to prepare a mixed solution. This mixed solution is applied to the smooth surface of the substrate to form a coating film, and then the coating film is formed into a flake shape by a treatment such as drying or reaction. Then, the blue flakes are peeled off from the smooth surface. In this way, flaky glass is formed. Moreover, you may apply the method as described in Unexamined-Japanese-Patent No. 2004-026614 using a colloid process. In this method, a colloidal solution of metal oxide is used instead of the above metal oxide sol. The blue flakes peeled from the substrate are fired at 200 to 800 ° C. The flakes are pulverized and classified as necessary to obtain flakes having an arbitrary average particle diameter.

  The surface of the flaky glass (A) is preferably hydrophobized. By the hydrophobizing treatment, the stability and dispersibility of the flaky glass (A) are improved.

  The coloring component contained in the flaky glass (A) is preferably ultramarine blue. Further, flaky glass (A) containing ultramarine as a coloring component and having a hydrophobic surface is particularly preferable. The hydrophobic treatment may be a general hydrophobic treatment described later.

  The ratio of the flaky glass (A) in the cosmetic of the present invention is 0.01 to 30%. When the content of the flaky glass (A) is less than 0.01%, the effect of the invention is poor. On the other hand, if the content exceeds 30%, the smoothness of the cosmetic is impaired.

  The hydrophobic powder (B) contained in the cosmetic of the present invention is a powder having a hydrophobic substance at least on its surface and / or a powder having a hydrophobic surface.

  The hydrophobic powder made of a hydrophobic substance is not particularly limited as long as it is used in cosmetics. For example, polyethylene powder, polypropylene powder, polymethyl methacrylate powder, 12 nylon (registered trademark) powder is used. May be. Alternatively, fluororesin powder such as polytetrafluoroethylene powder may be used. Silicone powder, silicone rubber powder, and silicone elastomer spherical powder may also be used. Further, silicon resin powder such as polymethylsilsesquioxane spherical powder, acylated lysine powder such as lauroyl lysine, metal soap powder which is a higher fatty acid metal salt, and the like may be used.

  The powder to be hydrophobized is not particularly limited as long as it is a powder used in cosmetics. For example, pigments such as red No. 104, red No. 201, yellow No. 4, blue No. 1, black No. 401 and the like, and yellow No. 4 Al lake, yellow No. 203 Ba lake and other lake pigment powders may be used. Moreover, you may use polymer powder, such as nylon powder, silk powder, urethane powder, and cellulose powder. Also, colored pigments such as yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black and bitumen, white pigments such as zinc oxide, titanium oxide and cerium oxide, constitutions such as talc, mica, sericite and kaolin Powders of pearl pigments such as pigments and mica titanium may be used. Further, metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, and magnesium silicate, and inorganic powders such as silica and alumina may be used. Further, titanium oxide fine particles, zinc oxide fine particles, iron oxide fine particles, alumina-treated titanium oxide fine particles, and silica-treated titanium oxide fine particles may be used. In addition, powders such as bentonite and smectite may be used. There is no particular limitation on the shape of these powders. Further, hydrophobic powder such as polyfluorinated ethylene resin powder and silicone rubber powder may be used after further hydrophobizing treatment.

  Furthermore, in order to give a particularly clear visual effect, it is preferable to use mica titanium having interference color, titanium oxide-coated glass powder, titanium oxide-coated synthetic phlogopite, and the like. Examples of commercially available products of titanium mica having an interference color include “Timiron Super Gold”, “Timiron Super Red” (Merck), “Flamenco Sparkle Blue” and “Flamenco Green” (hereinafter Engelhard) And the like. Examples of commercially available titanium oxide-coated glass powder include Metashine (registered trademark) MC1080RB, Metashine (registered trademark) MC1020RY, Metashine (registered trademark) MC1080RRSI (above, manufactured by Nippon Sheet Glass Co., Ltd.), and the like. it can. Examples of commercially available titanium oxide-coated synthetic phlogopite include Prominence BH, Prominence YB, Prominence RBX (manufactured by Topy Industries, Ltd.), and the like. Further, pearlescent pigments having interference colors, such as “Xirona Magic Mauve” and “Xirona Caribbean Blue” (manufactured by Merck Ltd.), “Sicopearl Fantastico Pink”, “Sicoparant Fantastico RubyF”, Are also preferably used.

  As the hydrophobization treatment of the flaky glass (A) and the powder, a known method can be used. For example, fluorine compound treatment (perfluoroalkyl phosphate treatment, perfluoroalkylsilane treatment, perfluoropolyether treatment, fluorosilicone treatment, fluorinated silicone resin treatment is preferred), silicone treatment (methylhydrogenpolysiloxane treatment, dimethyl) Polysiloxane treatment, vapor phase tetramethyltetrahydrogencyclotetrasiloxane treatment is preferred), silicone resin treatment (trimethylsiloxysilicic acid treatment is preferred), pendant treatment (method of adding alkyl chains after vapor phase silicone treatment) , Silane coupling agent treatment, titanium coupling agent treatment, silane treatment (alkyl silane or alkylsilazane treatment is preferred), lipophilic oil agent treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal Soap treatment (stearic acid or myristic acid salts are preferred), an amino acid treatment, plasma treatment, can be applied mechanochemical treatment. A plurality of these may be combined.

  In particular, N-acylated lysine treatment using Nε-lauroyl-L-lysine (Ajinomoto AMIHOPE LL) or alkyl silane treatment using octyltrialkoxysilane or the like is preferable. The amount of the hydrophobizing agent is preferably in the range of 0.5 to 15 parts by mass with respect to 100 parts by mass of the powder. Silicone treatment is also preferable. For example, methyl hydrogen polysiloxane (eg, KF99P manufactured by Shin-Etsu Chemical), dimethyl group-containing methyl hydrogen polysiloxane (eg: KF 9901, HRS-2 manufactured by Shin-Etsu Chemical), cyclic methyl hydro A treatment with Genpolysiloxane (for example, KF9902 manufactured by Shin-Etsu Chemical Co., Ltd.) and its baking treatment may be used.

  Furthermore, it is also preferable to treat the surface of the powder with an inorganic oxide such as silica, alumina or zirconia prior to the hydrophobizing surface treatment.

  The content rate of the powder (B) in the cosmetics of this invention is 5 to 80%. If the content of the powder (B) is less than 5%, the effect of preventing color dullness over time is insufficient. If the content exceeds 80%, the strength of the cosmetic is reduced, which is not preferable, and an effect commensurate with the blending amount cannot be obtained.

  The cosmetic of the present invention may contain components other than the above components as long as the effects of the present invention are obtained. Examples of such other components include powders that are not treated at all, oil agents, surfactants, stickers, preservatives, fragrances, ultraviolet absorbers, humectants, which are used in ordinary solid powder cosmetics. Examples thereof include physiological salts, solvents, antioxidants and physiologically active ingredients.

  As the powders other than the flaky glass (A) and the hydrophobic powder (B), a spherical powder is preferable in that it has a high feeling adjustment capability. In particular, it is preferable to use a mixture of spherical powders having different particle sizes. Further, the use of a powder having water absorption or oil absorption can improve the longevity of the makeup.

  A physiologically active ingredient is a substance that imparts some physiological activity to the skin when applied to the skin. The cosmetic of the present invention preferably contains one or more physiologically active ingredients. Examples of physiologically active ingredients include whitening ingredients, anti-inflammatory agents, anti-aging agents, UV protection agents, slimming agents, tanning agents, antioxidants, hair growth agents, hair restorers, moisturizers, blood circulation promoters, antibacterial agents, Examples include bactericides, desiccants, cooling agents, warming agents, vitamins, amino acids, wound healing promoters, irritation relaxation agents, analgesics, cell activators, enzyme components, and the like. Of these, natural ingredients such as plant extract ingredients, seaweed extract ingredients, and herbal medicine ingredients are preferred.

  Examples of natural ingredients include Ashitaba extract, Avocado extract, Achacha extract, Altea extract, Arnica extract, Aloe extract, Apricot extract, Apricot extract, Ginkgo biloba extract, Fennel extract, Turmeric extract, Oolong tea extract, Ages extract, Echinashi leaf Extract, Ogon extract, Oat extract, Oen extract, Barley extract, Hypericum extract, Odrianthus extract, Dutch mustard extract, Orange extract, Seawater dried product, Seaweed extract, Hydrolyzed elastin, Hydrolyzed wheat powder, Hydrolyzed silk, Chamomile extract, Carrot extract, Kawara mugwort extract, licorice extract, calcade extract, oyster extract, kiwi extract, kina extract, cucumber extract, guanosine, gardenia extract, kumazasa extract, clara Kiss, walnut extract, grapefruit extract, clematis extract, chlorella extract, mulberry extract, gentian extract, tea extract, yeast extract, burdock extract, fermented rice bran extract, rice germ oil, comfrey extract, collagen, bilberry extract, saicin extract, psycho extract Extract Kizuta extract, hawthorn extract, elderberry extract, yarrow extract, mint extract, sage extract, mallow extract, Cucumber extract, assembly extract, soybean extract, peanut extract, thyme extract, tea extract, clove extract, chigaya extract, chimpi extract, touki extract, toshinsen extract, tonin extract, spruce extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract , Novara extract, hibiscus extract, bacmond extract, lotus extract, parsley extract, honey, hamamelis extract, parietalia extract, toad extract, bisabolol, loquat extract, dandelion extract, fukinotou extract, bukkuri extract, butcher bloom extract, grape extract, propolis, Loofah extract, safflower extract, peppermint extract, bodaiju extract, button extract, hop extract, pine extract, maronier extract , Citrus extract, Mulberry extract, Melissa extract, Peach extract, Cornflower extract, Eucalyptus extract, Yukinoshita extract, Yuzu extract, Yakuinin extract, Artemisia extract, Lavender extract, Apple extract, Lettuce extract, Lemon extract, Astragalus extract, Rose extract, Rosemary extract , Roman chamomile extract, royal jelly extract and the like.

  The solid powder cosmetic of the present invention may be, for example, a foundation, eye shadow, white powder, teak, or concealer. There is no limitation in particular in the manufacturing method of the solid powder cosmetics of this invention, For example, after mixing powders and oil agent, you may apply the method of filling and pressing to an inside dish. Moreover, after mixing powders and an oil agent, you may apply the manufacturing method of adding solvents, such as a light isoparaffin, volatile silicone, or alcohol, to make a slurry, filling this slurry in an inner dish, and drying.

  EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples. In addition, the numerical value in a table | surface represents content (mass%). The evaluation methods employed in each example are described below.

[Usefulness evaluation test method]
Twenty female evaluators evaluated the usage characteristics when applied (smoothness and smoothness) and the lack of color dullness 3 hours after application according to the following evaluation criteria.
More than 18 people answered good: ◎
14-17 people who answered good: ○
7-13 people answered that it was good: △
Less than 6 people answered good: ×
Four types of silica flakes (flaked glass (A)) were produced by the following production method. In the following Production Examples 1 to 4, “Silica Dole 30” (particle size 20 nm, water dispersion) manufactured by Nippon Chemical Industry Co., Ltd. was used as a sol solution of silicon dioxide (silica). Moreover, “CB-80” (particle size: 200 nm) manufactured by Daiichi Kasei Kogyo Co., Ltd. was used as ultramarine particles.

[Production Example 1] (Production of ultramarine inclusion silica flakes)
While stirring 141 g of silica sol solution (42 g of silica in the sol solution) so that the content of ultramarine in silica is about 15% by mass, 7.5 g of ultramarine particles are added, and 178 g of pure water is further added. In addition, they were mixed and dispersed for 10 minutes using a known homogenizer disperser to prepare ultramarine-containing silica sol. At this time, it was confirmed that the silica sol had an alkaline pH of 8-10.

  To this silica sol, 5.0 g of trehalose (molecular weight 342), which is a water-soluble substance, was added and dispersed for another 30 minutes using a known homogenizer disperser. Next, this sol solution was allowed to stand at 25 ° C. for 18 hours. Next, the sol solution was applied to a polyethylene terephthalate film (PET film) having a width of 10 cm using a bar coater so that the thickness after drying was 0.7 μm. This film was placed in a drying oven at 120 ° C. for 3 minutes to dry the sol solution on the film. And this film was taken out from the drying furnace and cooled to room temperature. At this time, the thin film was uniformly attached to the surface of the PET film.

  While spraying room temperature water on the film, the film sandwiched between commercially available binder clips was pressed against the surface on which the thin film was formed, and only the film was pulled and slid. As a result, the thin film was peeled off from the film surface, and a flake was generated. The flakes were collected and dried at 120 ° C. for 1 hour, and then fired at 400 ° C. for 5 hours. Thus, a flake made of silica in which ultramarine fine particles were dispersed was obtained. The flakes were pulverized and classified using a known apparatus to obtain flaky glass (A) having an average particle diameter of 30 μm, an average thickness of 0.7 μm, and an average aspect ratio of 43.

[Production Example 2] (Production of ultramarine inclusion silica flakes)
While stirring 154 g of silica sol solution (46 g of silica in the sol solution), 18 g of ultramarine particles were added, and 178 g of pure water was further added so that the content of ultramarine in silica was about 30% by mass. The mixture was dispersed for 10 minutes using a known homogenizer disperser to prepare ultramarine-containing silica sol. At this time, it was confirmed that the silica sol had an alkaline pH of 8-10.

  To this silica sol, 6.0 g of trehalose (molecular weight 342), which is a water-soluble substance, was added and further dispersed for 30 minutes using a known homogenizer disperser. Next, this sol solution was allowed to stand at 25 ° C. for 18 hours. Next, the sol solution was applied to a PET film having a width of 10 cm using a bar coater so that the thickness after drying was 1.0 μm, and the film was placed in a drying oven at 120 ° C. for 3 minutes. The sol solution was dried. And this film was taken out from the drying furnace and cooled to room temperature. At this time, the thin film was uniformly attached to the surface of the PET film.

  While spraying room temperature water on the film, the film sandwiched between commercially available binder clips was pressed against the surface on which the thin film was formed, and only the film was pulled and slid. As a result, the thin film was peeled off from the film surface, and a flake was generated. The peeled flakes were collected and dried at 120 ° C. for 1 hour, and then fired at 400 ° C. for 5 hours. Thus, a flake made of silica in which ultramarine fine particles were dispersed was obtained. The flakes were pulverized and classified using a known apparatus to obtain flaky glass (A) having an average particle diameter of 10 μm, an average thickness of 1.0 μm, and an average aspect ratio of 10.

[Production Example 3] (Production of ultramarine inclusion silica flakes)
While stirring 141 g of silica sol solution (42 g of silica in the sol solution), 34 g of ultramarine particles were added, and 178 g of pure water was further added so that the content of ultramarine in silica was about 45% by mass. The mixture was mixed and dispersed for 10 minutes using a known homogenizer disperser to prepare an ultramarine-containing silica sol. At this time, it was confirmed that the pH of the ultramarine-containing silica sol was alkaline of 8-10.

  To this silica sol, 7.6 g of water-soluble substance trehalose (molecular weight 342) was added, and further dispersed for 30 minutes using a known homogenizer disperser. Further, this sol solution was allowed to stand at 25 ° C. for 18 hours. This sol solution was applied to a PET film having a width of 10 cm using a bar coater so that the thickness after drying was 1.8 μm, and the film was placed in a drying oven at 120 ° C. for 3 minutes to dry the sol solution. It was. And this film was taken out from the drying furnace and cooled to room temperature. At this time, the thin film was uniformly attached to the surface of the PET film.

  While spraying room temperature water on the film, the film sandwiched between commercially available binder clips was pressed against the surface on which the thin film was formed, and only the film was pulled and slid. As a result, the thin film was peeled off from the film surface, and a flake was generated. The peeled flakes were collected and dried at 120 ° C. for 1 hour, and then fired at 400 ° C. for 5 hours. As a result, flakes made of silica in which ultramarine fine particles were dispersed were obtained. The flakes were classified using a known apparatus to obtain flaky glass (A) having an average particle diameter of 30 μm, an average thickness of 1.8 μm, and an average aspect ratio of 16.

[Production Example 4] (Production of silicone-treated ultramarine inclusion silica flakes)
The ultramarine encapsulated silica flakes obtained in Production Example 2 were subjected to a dry coating treatment using methyl hydrogen polysiloxane (KF-9901 manufactured by Shin-Etsu Chemical Co., Ltd.) so that the coating amount was 3% by mass.

[Examples 1-4 and Comparative Examples 1-3]
Using the silica flakes of Production Example 1 and Production Example 4, solid powder eye shadows (Examples 1 to 4 and Comparative Examples 1 to 3) containing the components shown in Table 1 below were prepared by a conventional method. The obtained eye shadow was evaluated for use characteristics and color dullness by the above test methods. The evaluation results are shown in Table 1. In the components shown in the following table, the hydrophobic powder (B) is marked with a mark.

[Application example]
Using the flaky glass (A) produced in Production Examples 1 to 4, the following solid powder cosmetic was prepared by a conventional method. The cosmetics of any application examples had no color dullness over time and had a smooth coating feeling.

[Application Example 1] (Powder Eye Shadow)
Powder eye shadows containing the components in Table 2 below were prepared.

[Application Examples 2 to 6] (Powder Eye Shadow)
Powder eye shadows containing the components in Table 3 below were prepared.

[Application Example 7-1] (Powder Eye Shadow)
Powder eye shadows containing the components in Table 4 below were prepared.

[Application Example 7-2] (Powder Eye Shadow)
Powder eye shadows having the components shown in Table 5 below were prepared.

[Application 8] (Prestore Ibrow)
A prestable blow having the components shown in Table 6 below was prepared.

[Application 9] (Prestore Shadow)
A pre-storey shadow containing the components shown in Table 7 below was prepared.

[Application Example 10] (powder powder)
Powdered white powder containing the components shown in Table 8 below was prepared.

[Application Example 11] (Foundation)
A foundation containing the components in Table 9 below was prepared.

[Application Example 12] (Powder Foundation)
A powder foundation containing the components shown in Table 10 below was prepared.

[Application Example 13] (Powder Foundation)
A powder foundation containing the components shown in Table 11 below was prepared.

[Application Example 14] (Powder Foundation)
A powder foundation containing the components shown in Table 12 below was prepared.

  The embodiments of the present invention have been described above with examples. However, the present invention is not limited to the above-described embodiments and examples, and can be applied to other embodiments based on the technical idea of the present invention.

  The present invention can be applied to solid powder cosmetics.

Claims (3)

(A) 0.01% by mass to 30% by mass of flaky glass in which coloring component particles are dispersed; and (b) 5% by mass of powder other than the flaky glass and having a hydrophobic surface. % To 80% by mass,
The flaky glass is a solid powder cosmetic having an average thickness in the range of 0.1 μm to 3 μm, an average particle diameter in the range of 1 μm to 300 μm, and an average aspect ratio in the range of 5 to 300.   The solid powder cosmetic according to claim 1, wherein a surface of the flaky glass is subjected to a hydrophobic treatment.   The solid powder cosmetic according to claim 1, wherein the coloring component is ultramarine.