JP7827433B2 - cosmetics - Google Patents

Description

The present invention relates to cosmetics.

BACKGROUND ART Cosmetics containing various composite powders have been investigated to obtain cosmetics that are excellent in feel when used and have an excellent effect of covering unevenness.
For example, Patent Document 1 describes that a solid powder cosmetic containing a composite powder containing spherical silica and titanium oxide, an organic spherical elastic powder, a plate-like powder, and an oil can be taken up in an optimal amount using a sponge or the like, reduces the sense of resistance when applied to the skin using a sponge or the like, and provides a natural finish without leaving a white cast while having excellent unevenness coverage.

Japanese Patent Application Laid-Open No. 2021-80182

Cosmetics that use a combination of composite powder and plate-like powder, as described in Patent Document 1, have issues such as a poor feel when applied to the skin with a puff, such as a squeaky sensation when spreading, and uneven finish.

The inventors have discovered that by combining silica, which has a small specific surface area, with a specific composite powder and boron nitride, it is possible to obtain a cosmetic that does not feel rough when applied to the skin with a puff and is spread, has an excellent feel when used, feels smooth when applied to the skin with a puff, provides an even finish after application, and has excellent ability to cover skin irregularities and lasts for a long time.

The present invention comprises the following components (A), (B) and (C):
(A) a composite powder containing spherical silica and one or more metal oxides selected from titanium oxide and zinc oxide, and having a volume average particle size of 1 to 50 μm;
(B) silica other than component (A) having a specific surface area of 200 m ² /g or less;
(C) Cosmetics containing boron nitride.

The cosmetic composition of the present invention has an excellent feel when applied to the skin with a puff, does not feel rough when spreading, feels smooth when applied to the skin with a puff, leaves a good, even finish after application, and is also excellent in terms of its ability to cover skin irregularities and long-lasting makeup.

The component (A) used in the present invention is a composite powder containing spherical silica (A1) and one or more metal oxides (A2) selected from titanium oxide and zinc oxide, and having a volume average particle size of 1 to 50 μm.
In the present invention, the spherical shape includes a perfect sphere, an approximately spherical shape, and a spheroid, and may also be a spherical powder having an irregular surface.
The base spherical silica (A1) preferably has a volume average particle size of 1 to 50 μm, more preferably 1 to 40 μm, even more preferably 1 to 30 μm, and even more preferably 2 to 10 μm, from the viewpoint of being able to be applied to the skin with a puff or the like and spread without causing any squeaky feeling.
Here, the volume average particle size is a value measured using ethanol as a dispersion medium with a laser diffraction scattering particle size distribution analyzer (LMS-350, manufactured by Seishin Enterprise Co., Ltd.) The volume average particle size is the average particle size on a volume basis, and is the 50% median diameter.
The content of the spherical silica (A1) in the composite powder is preferably from 1 to 95% by mass, more preferably from 40 to 92% by mass, and even more preferably from 60 to 90% by mass.

Furthermore, the one or more metal oxides (A2) selected from titanium oxide and zinc oxide may be any of pigment-grade titanium oxide, titanium oxide, and zinc oxide, and preferably contain at least zinc oxide from the viewpoints of being able to be applied to the skin with a puff or the like without causing a squeaky feeling when being spread, and of being excellent in the ability to cover skin irregularities.
From the viewpoint of excellent ability to cover skin irregularities, the metal oxide (A2) preferably has a number average particle size of 1 to 1,000 nm, more preferably 3 to 500 nm, even more preferably 5 to 100 nm, and even more preferably 8 to 50 nm.
Here, the number average particle size is a value determined as the arithmetic mean of the major and minor axes of particles from a transmission electron microscope photograph.
From the viewpoint of excellent ability to cover irregularities on the skin, the metal oxide (A2) preferably has a specific surface area of 15 to 100 m ² /g, more preferably 18 to 95 m ² /g.
Here, the specific surface area refers to the surface area per unit mass, and in the present invention, it means the specific surface area obtained by the BET method (N2).
The content of the metal oxide (A2) in the composite powder is preferably from 5 to 99% by mass, more preferably from 8 to 60% by mass, and even more preferably from 10 to 40% by mass.

In the composite powder of component (A), the mass ratio (A1)/(A2) of the base spherical silica (A1) to the metal oxide (A2) is preferably 0.01 to 19, more preferably 0.67 to 11.5, even more preferably 1.5 to 9, and even more preferably 2 to 6, from the viewpoints of being able to apply and spread the powder on the skin without any squeaking sensation when applied to the skin with a puff or the like, and of having excellent ability to cover skin irregularities.

The composite powder of component (A) preferably contains spherical silica as a base and at least a metal oxide, with the metal oxide being encapsulated within the spherical silica particles and/or dotted on the surface thereof, and the metal oxide may be present either dispersed within the spherical silica particles or on the particle surface.
Furthermore, the composite powder of component (A) may contain a component other than spherical silica and a metal oxide selected from titanium oxide and zinc oxide, such as iron oxide.
The composite powder of component (A) preferably contains a composite powder containing spherical silica and zinc oxide, from the viewpoints of being able to be applied to the skin with a puff or the like without causing a squeaky feeling when spreading it, and of having excellent ability to cover skin irregularities, and it is more preferable to use a combination of a composite powder containing spherical silica and zinc oxide and a composite powder containing spherical silica and titanium oxide.
Furthermore, the composite powder of component (A) is preferably spherical in shape, from the viewpoints of being able to be applied to the skin with a puff or the like without causing any squeaky feeling when being spread, and of having excellent ability to cover skin irregularities.

The composite powder of component (A) can be produced by adding a silica sol containing spherical silica as a base to a dispersion of a metal oxide or the like in water, followed by firing and/or mixing and granulation.
The composite powder of component (A) is preferably obtained by firing.
The volume average particle size of the composite powder is 1 to 50 μm, preferably 1 to 40 μm, more preferably 1 to 30 μm, and even more preferably 2 to 10 μm, from the viewpoints of enabling use without a squeaky feeling when applied to and spread on the skin with a puff or the like, and of providing excellent ability to cover skin irregularities.
The volume average particle size of the composite powder is measured in the same manner as for the component (A1).

Examples of the composite powder of component (A) include PULSEA SIZ-30 (manufactured by Suzuki Oil & Fat Industries Co., Ltd., volume average particle size: 4 μm, 70% by mass of silica (volume average particle size 4 μm) in the composite powder, and 30% by mass of zinc oxide in the composite powder), INAFLEX IWS22S13 (manufactured by Nippon Sheet Glass Co., Ltd., volume average particle size: 4 μm, 78% by mass of silica (volume average particle size 4 μm) in the composite powder, and 22% by mass of titanium oxide), SUNSIL TIN 50 (manufactured by SUNJIN CHEMICAL Co., Ltd., volume average particle size: 5 μm, 58% by mass of silica (volume average particle size 5 μm) in the composite powder, and 42% by mass of titanium oxide (number average particle size 12 nm)), and SUNSIL TIN 40 (manufactured by SUNJIN Commercially available products that can be used include SH219 (manufactured by SUNJIN CHEMICAL Co., Ltd., volume average particle size: 5 μm, composite powder containing 70% silica (volume average particle size 5 μm) and 30% titanium oxide (number average particle size 12 nm)), SH219 (manufactured by SUNJIN CHEMICAL Co., Ltd., volume average particle size: 5 μm, composite powder containing silica (volume average particle size 5 μm) and titanium oxide (number average particle size 12 nm)), and PC ball WT-35H (manufactured by Suzuki Yushi Kogyo Co., Ltd., volume average particle size: 3 μm, composite powder containing 65% silica (volume average particle size 3 μm) and 35% fine titanium oxide particles).

The composite powder of component (A) may be used as it is, or may be subjected to a hydrophobic treatment by a conventional method before use.
Examples of hydrophobic treatments include surface treatments such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, acylated amino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, and urethane resin treatment.
As the hydrophobic treatment, from the viewpoints of being able to use the cosmetic composition without a squeaky feeling when applied to the skin with a puff or the like and spread, being excellent in ability to cover unevenness of the skin, and being excellent in long-lasting makeup, at least one or two or more hydrophobic treatments selected from silicone treatment, amino acid treatment, and acylated amino acid treatment are preferred, silicone treatment is more preferred, and dimethicone treatment is even more preferred.
When the composite powder of component (A) is used after being subjected to a hydrophobic treatment, the content of component (A) means the mass including the agent used for the hydrophobic treatment.

The composite powder of component (A) can be used alone or in combination of two or more types. From the viewpoints of being able to apply and spread the powder on the skin without a squeaky feeling when applied with a puff or the like, and of being excellent at covering skin irregularities, the content is preferably 1 to 20% by mass, more preferably 3 to 15% by mass, and even more preferably 5 to 12% by mass of the total composition.

The silica of component (B) is other than component (A) and has a specific surface area of 200 ^m2 /g or less. From the viewpoints of providing a smooth feel during application to the skin with a puff, suppressing unevenness in the finish after application, and providing excellent coverage for skin irregularities and makeup durability, the specific surface area is preferably 150 ^m2 /g or less, more preferably 120 ^m2 /g or less, even more preferably 80 ^m2 /g or less, and it is even more preferably non-porous.
Here, the specific surface area is measured in the same manner as for component (A).

Furthermore, the silica of component (B) is preferably spherical in shape, from the viewpoints of suppressing unevenness in the finish after application and providing excellent coverage of skin irregularities. Here, "spherical" has the same meaning as for component (A).
The volume average particle size of the silica of component (B) is preferably 1 to 50 μm, more preferably 1 to 35 μm, even more preferably 2 to 25 μm, and even more preferably 3 to 15 μm, from the viewpoints of suppressing unevenness in the finish after application and excellent ability to cover skin irregularities.
The volume average particle size is measured in the same manner as described for component (A).

The silica of component (B) may be used as is, or may be hydrophobized by a conventional method. The hydrophobization treatment may be carried out in the same manner as for component (A).
When hydrophobized silica is used, the content of component (B) means the mass including the hydrophobizing agent.

From the viewpoints of suppressing unevenness in the finish after application and providing excellent coverage of skin irregularities, the content of component (B) is preferably 0.5 to 15% by mass of the total composition, more preferably 1 to 11% by mass, and even more preferably 3 to 8% by mass.

In the present invention, the mass ratio (A)/(B) of component (A) to component (B) is preferably 0.2 to 10, more preferably 0.5 to 6, and even more preferably 1 to 4, from the viewpoints of providing an excellent feel in use, a smooth feel during application to the skin with the puff, suppressing unevenness in the finish after application, and providing excellent coverage for skin irregularities and makeup durability without any roughness when applied to the skin with the puff and spreading it over the skin.

The boron nitride used as component (C) in the present invention is not particularly limited as long as it is one that is commonly used in cosmetics. The morphology of boron nitride may be any of hexagonal, wurtzite structure, cubic, rhombohedral, turbostratic structure, etc., with hexagonal crystals being preferred from the viewpoint of excellent spreadability and providing a smooth feel.
From the viewpoint of providing excellent spreadability and a smooth feel, boron nitride preferably has a volume average particle size of 2 to 20 μm, more preferably 4 to 15 μm, and even more preferably 5 to 12 μm.The shape is preferably plate-like.
The volume average particle size is measured in the same manner as for component (A).
As the boron nitride of component (C), commercially available products such as SHP-6 (volume average particle size 9.6 μm), SHP-3 (volume average particle size 5.3 μm) (all manufactured by Mizushima Ferroalloy Co., Ltd.), PUHP-1109J (volume average particle size 12 μm), PUHP-3008J (volume average particle size 8 μm) (all manufactured by Saint-Gobain), Denka Boron Nitride C-7N (volume average particle size 7.5 μm, manufactured by Denka Company Limited), and Denka Boron Nitride C-10N (volume average particle size 10 μm, manufactured by Denka Company Limited) can be used.

The boron nitride of component (C) may be used as is, or may be hydrophobized by a conventional method. The hydrophobization treatment may be carried out in the same manner as for component (A).
When hydrophobically treated boron nitride is used, the content of component (C) means the mass including the agent used for the hydrophobizing treatment.

Component (C) boron nitride can be used alone or in combination of two or more types. The content is preferably 1 to 35% by mass, more preferably 8 to 30% by mass, and even more preferably 15 to 25% by mass of the total composition, from the viewpoints of providing an excellent feel in use, a smooth feel during application to the skin with a puff, and preventing unevenness in the finish after application, without any squeaky feeling when applied and spread on the skin with a puff.

In the present invention, the mass ratio (B)/(C) of component (B) to component (C) is preferably 0.05 to 1, more preferably 0.1 to 0.8, and even more preferably 0.15 to 0.4, from the viewpoints of providing an excellent feel when applied to the skin with a puff and spreading it without any squeaky sensation, a smooth feel when applied to the skin with a puff, suppressing unevenness in the finish after application, and providing excellent coverage for skin irregularities and makeup durability.

The cosmetic of the present invention may further contain, as component (D), a plate-like powder other than components (B) and (C), which can impart a smooth feel during application.
The platy powder of component (D) is not limited as long as it is one that is commonly used in cosmetics, and examples thereof include silicic acid, silicic anhydride, magnesium silicate, sericite, talc, mica, kaolin, clay, bentonite, synthetic phlogopite, titanium mica, titanium oxide-coated borosilicate, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, etc. Of these, talc and synthetic phlogopite are preferred from the viewpoints of suppressing white cast and imparting a smooth feel during application.

From the viewpoints of suppressing white floating and imparting a smooth feel during application, the plate-like powder of component (D) preferably has a volume average particle size of 1 to 50 μm, more preferably 2 to 40 μm, even more preferably 3 to 30 μm, and even more preferably 5 to 20 μm.
Here, the volume average particle size is measured in the same manner as for the component (A).
The aspect ratio is preferably from 10 to 80, more preferably from 15 to 70, from the viewpoint of suppressing whitish appearance and imparting a smooth feel during application.
The aspect ratio is calculated from the ratio of the volume average particle diameter to the average particle thickness, and is defined as aspect ratio=(volume average particle diameter/average thickness).
The average particle thickness can be determined by averaging the thicknesses of 10 to 50 base particles measured by observation using a scanning electron microscope or a transmission electron microscope.

Component (D) includes, for example, talc such as Talc JA-13R (manufactured by Asada Flour Milling Co., Ltd., volume average particle size 7 μm, aspect ratio 18), Talc JA-46R (manufactured by Asada Flour Milling Co., Ltd., volume average particle size 9 μm, aspect ratio 50), and Talc JA-68R (manufactured by Asada Flour Milling Co., Ltd., volume average particle size 11 μm, aspect ratio 50); and synthetic phlogopite such as PDM-NFE (manufactured by Topy Industries, Ltd., volume average particle size 5 μm, aspect ratio 40), PDM-1 Commercially available products such as PDM-000 (manufactured by Topy Industries, Ltd., average particle size 12 μm, aspect ratio 20), PDM-5L (manufactured by Topy Industries, Ltd., average particle size 6 μm, aspect ratio 40), PDM-10L (manufactured by Topy Industries, Ltd., average particle size 12 μm, aspect ratio 60), PDM-20L (manufactured by Topy Industries, Ltd., average particle size 20 μm, aspect ratio 70), and PDM-40L (manufactured by Topy Industries, Ltd., average particle size 40 μm, aspect ratio 80) can be used.

The plate-like powder of component (D) may be used as is, or may be hydrophobized by a conventional method. The hydrophobization treatment may be carried out in the same manner as for component (A).
When a hydrophobically treated plate-like powder of component (D) is used, the content of component (D) means the mass including the agent used for the hydrophobizing treatment.

The plate-like powder of component (D) can be used alone or in combination of two or more types. From the viewpoint of suppressing white cast and imparting a smooth feel during application, the content is preferably 10 to 60% by mass, more preferably 25 to 50% by mass, and even more preferably 30 to 45% by mass of the total composition.

In the present invention, the mass ratio (B)/((A) + (B) + (C) + (D)) of component (B) to the total mass of components (A), (B), (C), and (D) is preferably 0.03 to 0.2, more preferably 0.04 to 0.15, and even more preferably 0.05 to 0.12, from the viewpoints of providing a smooth feel during application to the skin with a puff, suppressing unevenness in the finish after application, excellent coverage of skin irregularities, and excellent makeup wear durability, without any squeaky feeling when applied to the skin with a puff and spreading it over the skin.

The cosmetic of the present invention may further contain an oil, which can suppress powdery or uneven finish after application and improve the durability of the makeup.
Such oils are not limited as long as they are used in ordinary cosmetics, and those that are liquid or paste-like at 25°C can be suitably used.
Examples of oils include ester oils, higher alcohols, hydrocarbons, and silicone oils.

Examples of ester oils include monoester oils, diester oils, and triester oils. Preferred are one or more selected from octyldodecyl myristate, diisostearyl malate, neopentyl glycol dicaprate, isotridecyl isononanoate, isononyl isononanoate, dipentaerythrityl tetraisostearate, di(phytosteryl/octyldodecyl) lauroyl glutamate, 2-ethylhexyl paramethoxycinnamate, caprylic/capric triglyceride, triethylhexanoin, ethylhexyl hydroxystearate, propylene carbonate, jojoba oil, and partially hydrogenated jojoba oil. More preferred are one or more selected from neopentyl glycol dicaprate, 2-ethylhexyl paramethoxycinnamate, and triethylhexanoin, with 2-ethylhexyl paramethoxycinnamate being even more preferred.

The higher alcohol is preferably one or more selected from higher alcohols having 16 to 24 carbon atoms and a branched structure, such as decyltetradecanol, octyldodecanol, isostearyl alcohol, hexyldecanol, and oleyl alcohol, with octyldodecanol being preferred.
The hydrocarbon oil may be either volatile or nonvolatile, preferably nonvolatile, and may be linear or branched hydrocarbon oil such as liquid paraffin, light isoparaffin, liquid isoparaffin, squalane, or squalene, preferably one or more selected from squalane and liquid paraffin, more preferably squalane.

Silicone oils may be either volatile or nonvolatile, with nonvolatile oils being preferred. Examples include dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and higher alcohol-modified organopolysiloxane, with dimethylpolysiloxane being preferred.

As oils, from the viewpoint of suppressing powdery or uneven finish after application and improving makeup durability, one or more selected from neopentyl glycol dicaprate, 2-octyl paramethoxycinnamate, squalane, jojoba oil, and partially hydrogenated jojoba oil are preferred, one or more selected from neopentyl glycol dicaprate, 2-ethylhexyl paramethoxycinnamate, and squalane are more preferred, and one or more selected from neopentyl glycol dicaprate and 2-ethylhexyl paramethoxycinnamate are even more preferred.

One or more oils can be used in combination. From the viewpoint of suppressing powdery or uneven finish after application and improving makeup durability, the content is preferably 0.1 to 15% by mass, more preferably 1 to 12% by mass, even more preferably 3 to 10% by mass, and even more preferably 6 to 9% by mass of the total composition.

The cosmetic composition of the present invention may further contain a color pigment other than component (A).
The color pigments are those used in ordinary cosmetics, such as titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, iron oxide red, iron blue red, ultramarine blue red, chromium oxide, chromium hydroxide, and other metal oxides, manganese violet, cobalt titanate, and other metal complexes, as well as inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 2 Examples of the pigments to be treated include synthetic organic pigments such as Red No. 20, 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 No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment, as well as composites of these colored pigments and composite pigments combining these colored pigments with pearl pigments. Examples of the pearl pigments to be treated include natural or synthetic inorganic powders such as mica, phlogopite, talc, silica, sericite, glass, kaolin, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, and plate-like alumina powder. Specific examples of composite pigments include titanium oxide-coated mica, iron oxide-coated mica, iron oxide-coated mica titanium, iron oxide-coated synthetic phlogopite, chromium oxide-coated mica titanium, titanium oxide-coated glass powder, iron oxide-coated glass powder, titanium oxide-containing glass powder, and iron oxide-containing glass powder.
Of these, metal oxides are preferred, and it is more preferred to include at least one or two or more selected from titanium oxide, zinc oxide, yellow iron oxide, black iron oxide, and red iron oxide, and it is even more preferred to include at least one or two or more selected from titanium oxide, yellow iron oxide, black iron oxide, and red iron oxide.

These color pigments can be used as they are, or can be subjected to a hydrophobic treatment in the same manner as component (A).
When a hydrophobized color pigment is used, the content of the color pigment means the mass including the agent used for the hydrophobization treatment.

One or more color pigments can be used, and from the perspective of achieving a beautiful makeup effect on the skin, the content is preferably 0.1 to 35% by mass of the total composition, more preferably 1 to 30% by mass, even more preferably 5 to 28% by mass, and even more preferably 10 to 25% by mass.

In addition to the above-mentioned components, the cosmetic of the present invention may contain components commonly used in cosmetic preparations, such as powders other than components (A), (B), (C), and (D), preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, UV absorbers, moisturizers, blood circulation promoters, cooling agents, antiperspirants, disinfectants, and skin activators.

From the viewpoints of environmental consideration and excellent usability, the cosmetic of the present invention preferably contains no more than 1% by mass of organic resin powder in the total composition, more preferably no more than 0.1% by mass, and even more preferably is substantially free of organic resin powder.
The content of spherical organic resin powder in the total composition is preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably substantially zero.
Examples of organic resin powders include crosslinked or non-crosslinked organic resin powders such as powders of one or more polymers or copolymers selected from polyamide resin, nylon resin, polyester resin, polyethylene resin, polytetrafluoroethylene resin, polypropylene resin, polystyrene resin, benzoguanamine resin, polymethylbenzoguanamine resin, polyurethane resin, vinyl resin, fluororesin, acrylic resin, and melamine resin; and butyl acrylate-vinyl acetate copolymer, styrene-acrylic acid copolymer, silicone resin, and divinylbenzene-styrene copolymer.

The cosmetic of the present invention can be produced according to a conventional method.
The cosmetic of the present invention is preferably a powder cosmetic, more preferably a solid powder cosmetic.
When preparing a solid powder cosmetic, for example, all of the powder components including components (A), (B), and (C) are mixed and pulverized, and then an oil is added and mixed. The resulting mixture is further pulverized in a pulverizer, and the pulverized product is filled into a container and molded at a molding pressure of 1000 to 2500 kgf, thereby obtaining a solid powder cosmetic.

The cosmetic product of the present invention is suitable as a makeup cosmetic product such as a powder foundation, blusher, or eye shadow.

Examples 1 to 8, Comparative Examples 1 to 3
Solid powder cosmetics (powder foundations) were prepared with the compositions shown in Table 1, and the squeaky feeling when spread with a puff, the smooth feeling when applied to the skin with the puff, the finished state after application, the ability to cover skin irregularities, and the durability of the makeup were evaluated. The results are also shown in Table 1.

(Manufacturing method)
All of the powder ingredients, including components (A), (B), and (C), were mixed and pulverized, and then an oil was added and mixed. The resulting mixture was then pulverized in a pulverizer. The pulverized product was filled into a container and molded at a molding pressure of 1,000 to 2,500 kgf to obtain a solid powder cosmetic (powder foundation).

(Evaluation method)
(1) Squeaky feeling when spreading with a puff:
Five expert panelists applied each powder solid cosmetic (foundation) to the skin using a puff and spread it, and then performed a sensory evaluation based on the following criteria for the feeling of squeaking. The results were expressed as the total score of the five panelists.
5: No creaking sensation.
4: I don't feel much creaking.
3: There is a slight creaking sensation.
2: There is a creaking sensation.
1: There is a noticeable creaking sensation.

(2) Smooth feel when applying to skin using a puff:
Five expert panelists applied each powder solid cosmetic (foundation) to the skin using a puff, and evaluated the smooth feel during application according to the following criteria. The results were expressed as the total score of the five panelists.
5: Feels very smooth.
4: Smooth feel.
3: Slightly smooth feel.
2: Not very smooth feeling.
1: Not smooth to the touch.

(3) Finished condition after application:
Five expert panelists evaluated the finish (evenness) after application of each powder solid cosmetic (foundation) according to the following criteria. The results are shown as the total score of the five panelists.
5: Not uneven.
4: Not very uneven.
3: Slightly uneven.
2: Uneven.
1: Quite inconsistent.

(4) Ability to cover skin irregularities:
After applying each powder solid cosmetic (foundation), five expert panelists performed a sensory evaluation of the ability to cover uneven skin surfaces according to the following criteria. The results were expressed as the total score of the five panelists.
5: Covers uneven skin texture well.
4: Covers uneven skin.
3: Slightly covers uneven skin tone.
2: Doesn't cover uneven skin texture very well.
1: Does not cover uneven skin.

(5) Makeup durability:
Five expert panelists applied each powder solid cosmetic (foundation) and then performed a sensory evaluation of the makeup durability 10 hours later according to the following criteria. The results were expressed as the total score of the five panelists.
5: My makeup stays put.
4: Makeup stays put.
3: Makeup doesn't come off easily.
2: Makeup is slightly ruined.
1: Makeup doesn't come off.

Claims (2)

The following components (A), (B), and (C):
(A) 1 to 20 mass% of a composite powder containing spherical silica and one or more metal oxides selected from titanium oxide and zinc oxide and having a volume average particle size of 1 to 50 μm,
(B) 0.5 to 15 mass% of silica other than component (A) having a specific surface area of 200 m ² /g or less,
(C) 1 to 35 mass% of boron nitride
Contains
A cosmetic preparation in which the mass ratio (A)/(B) of component (A) to component (B) is 0.5 to 6 . 2. The cosmetic according to claim 1, which is a solid powder cosmetic.