KR20220041115A - solid cosmetics - Google Patents

Abstract

An object of the present invention is to provide a solid cosmetic and method capable of adjusting the color tone of the cosmetic film by rubbing the coating film after applying the cosmetic, and further, having a smooth feeling of use. The solid cosmetic of the present invention is (a) particles containing a pigment, in which some or all of the external color of the pigment is masked, (b) 2 to 15% by mass of a water-insoluble powder component based on the total amount of the cosmetic (excluding the color material) ) and (c) characterized in that it contains 10% by mass or less of a colorant based on the total amount of the cosmetic.

Description

solid cosmetics

The present invention relates to a solid cosmetic that can change color tone by applying a frictional force to a coating film after the cosmetic is applied on the skin and a method therefor.

In recent years, in cosmetics, especially makeup cosmetics, not only the good color development of the coating film when applied to the skin, but also the novelty of the appearance color of the cosmetics itself and the specificity of use are important factors of commercial value.

As one of the techniques for realizing a color tone different from that of cosmetics on the skin, multi-layered capsule-type or aggregate-type particles containing a pigment are used.

For example, in Patent Document 1, in a sunscreen cosmetic containing a large amount of ultraviolet scattering agent, by blending the capsule particles containing the pigment, the pigment color is masked before application, while having a clear appearance color, and the pigment is removed during application. Cosmetics have been proposed in which white turbidity caused by UV scattering agents is suppressed by being emitted.

In addition, in Patent Document 2, by preparing as a water-in-oil emulsified cosmetic containing soft agglomerated particles formed by mixing a pigment and a specific water-soluble polymer in the inner phase, it is smoothly crushed by rubbing it on the skin and is different from the appearance color of the cosmetic. Cosmetics capable of imparting a colored cosmetic film have been proposed.

Although there is novelty in that the cosmetic material itself has a different color from the appearance color of the cosmetic material and the color tone of the applied surface, the color development occurs immediately after application, and the timing of color development and the degree of color development cannot be adjusted according to the user's preference.

Japanese Patent Publication No. 2017-515864 Japanese Patent Laid-Open No. 2011-225563

An object of the present invention is to provide a solid cosmetic that can control the color development of the cosmetic by applying a frictional force (rubbing) to the application surface to which the cosmetic is applied, and also has a smooth feeling of use.

As a result of repeated intensive studies to solve the above problems, the present inventors, in a cosmetic containing particles containing a pigment, have a solid cosmetic containing a specific powder component, so that the color tone of the coating film can be changed after application. It was discovered that there exists, and came to complete this invention.

That is, the present invention is

(a) particles comprising a pigment, wherein some or all of the appearance color of the pigment is masked;

(b) 2 to 15 mass % of water-insoluble powder components (excluding colorants) based on the total amount of the cosmetic; and

(c) To provide a solid cosmetic containing 10% by mass or less of a color material with respect to the total amount of the cosmetic.

In addition, the present invention,

Particles containing a pigment and masking part or all of the external color of the pigment, 2 to 15% by mass of water-insoluble powder components (excluding colorants) based on the total amount of the cosmetic, 10% by mass or less with respect to the total amount of the cosmetic A process of applying a solid cosmetic comprising a colorant to the skin, and

It provides a method of changing the color tone of a cosmetic coating film, comprising the step of applying a frictional force greater than a frictional force generated when the cosmetic is applied to the coating film.

According to the present invention, when the cosmetic is applied on the skin, the particles containing the pigment are not pulverized and are held in the coating film by setting it as the above configuration. In addition, by applying a frictional force to the coating film, particles containing the pigment are pulverized to release the pigment, so that the color tone of the coating film can be adjusted at a desired time and to a desired degree by the user. The cosmetic of the present invention is novel in that it is possible for the user to adjust the color tone of the cosmetic coating film after application. According to the present invention, since it is possible to develop color again after a certain period of time has elapsed after application, it is possible to obtain a cosmetic excellent in makeup retention. In addition, in spite of blending a lot of powder components, a smooth feeling of use can be realized.

The cosmetic of the present invention is characterized in that it contains (a) particles including a pigment, (b) a water-insoluble powder component (excluding a color material), and (c) a color material. Hereinafter, each component constituting the cosmetic of the present invention will be described in detail.

<(a) Particles Containing Pigment>

As the particles containing (a) pigment to be formulated in the cosmetic according to the present invention (hereinafter, simply referred to as “component (a)”), some or all of the appearance color of the pigment generally used in cosmetics is masked. As long as it is a particle, the thing of any form may be sufficient. Examples include multi-layered capsule particles encapsulating a pigment, agglomerated particles in which the pigment is integrated with other components, and the like. Among them, from the viewpoint of easiness of controlling the pigment emission from the particles, multilayered capsule particles containing pigments are preferably used.

The multi-layered capsule particle containing the pigment has a structure including an inner layer and one or a plurality of outer layers. Color pigments such as red inorganic pigments and yellow inorganic pigments are contained as essential components in the inner layer, and the outer layer using a polymer as a base material covers the inner layer. The outer layer made of a polymer as a base material may be further covered with a layer comprising a functional pigment. The outer layer using a polymer as the base material and the layer containing the functional pigment (inorganic powder) may be coated in any order, and each may be a single layer or a multilayer. The inner and outer layers may optionally include inorganic powders.

The polymer serving as the base material is not particularly limited as long as it is commonly used in cosmetics, but for example, (meth)acrylic resins such as polymethyl methacrylate, nylon, polyester, polyethylene, polystyrene, polyurethane, silicone resin, cellulose, etc. of organic polymers.

The "color pigment" in the present invention is not particularly limited as long as it has a function of changing the color tone of cosmetics. Pigments generally referred to as "color pigments", for example, red inorganic pigments such as red iron oxide, iron oxide/titanium oxide sinter, cadmium red, molybdenum red, yellow iron oxide, cerium oxide, bismuth vanadium yellow, yellow lead, cadmium Yellow inorganic pigments, such as yellow, etc. are mentioned.

The "functional pigment" in the present invention includes not only boron nitride, which is generally called a functional pigment, but also pigments other than the above "colored pigment", for example, white pigments such as titanium oxide and zinc oxide, talc, mica and silica. extender pigments, such as etc. are included.

Commercially available products include Magicolor (registered trademark) (manufactured by Biogenic Co., Ltd.), Sugarcapsule Magic SP Series (manufactured by DAITO KASEI KOGYO CO., LTD.), TagraCap (trademark) (manufactured by Takara Bio Inc.) and MicroBeads (trademark) (manufactured by Salvona Technologies) is mentioned.

The multi-layered capsule particle encapsulating the pigment is prepared by, for example, a color pigment, a plasticizer and a polymer as described in US Patent Publication No. 2011/0165208 A1 (corresponding Japanese Patent Application Publication No. 2011-529104). Homogeneously mixing with the first solvent to prepare a first mixed solution, spray-drying the prepared solution to form core particles in which a color pigment is coated with a polymer, and adding the formed core particles and functional pigment to a second solvent It can be prepared by homogeneously mixing to prepare a second mixed solution, and spray-drying the second mixed solution to produce multi-layered capsule particles in which a coating layer of a functional pigment is formed on the outside of the core particles.

In multi-layered capsule particles, multi-layer refers to two to three layers, or three or more layers, and preferably has a two-layer structure comprising an inner layer containing a pigment and an outer layer containing a polymer as a base material, or an inner layer containing a pigment. It has a three-layer structure in which an outer layer based on a polymer and a polymer is also covered by a layer comprising a functional pigment.

The shape of the multi-layered capsule particle may be a spherical shape, a square shape, an elliptical shape, etc., and an irregular shape may be sufficient, and a shape does not matter.

Although component (a) of this invention can be used in the state as it is, it can also be used by performing hydrophobization treatment with the hydrophobization treatment agent normally used for the surface. Although it does not restrict|limit especially as a hydrophobization surface treatment, For example, silicone treatment (silicone oil, such as methylhydrogenpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane; methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, jade Alkylsilane such as tyltrimethoxysilane, treatment with fluoroalkylsilane such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane), fatty acid treatment (palmitic acid, isostearic acid, Treatment with stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, rosin acid, 12-hydroxystearic acid, etc.), fatty acid soap treatment (treatment with aluminum stearate, calcium stearate, etc.), fatty acid ester treatment (treatment with aluminum stearate, calcium stearate, etc.) treatment with dextrin fatty acid ester, cholesterol fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, etc.) and the like. These hydrophobization treatment can be performed according to a conventional method.

The particle diameter of component (a) of the present invention is less than 300 μm, preferably 280 μm or less, more preferably 250 μm or less, still more preferably 150 μm or less, still more preferably 100 μm or less, most preferably is less than or equal to 60 µm. Here, the particle diameter represents a number average diameter. When the particle diameter is 300 µm or more, the feeling of use of the cosmetic tends to be poor.

The blending amount of component (a) in the cosmetic according to the present invention is not particularly limited as long as it is an effective amount in order to achieve a desirable visual effect on the coated surface. For example, it is 0.1-10 mass % with respect to the cosmetics whole quantity, Preferably it is 0.5-9.0 mass %, More preferably, it is 1.0-8.0 mass %. When a compounding quantity is less than 0.1 mass %, the change of color tone is hard to be obtained, and when it exceeds 10 mass %, there exists a tendency for usability to worsen.

<(b) water-insoluble powder component>

The (b) water-insoluble powder component (hereinafter, simply referred to as "(b) component") to be blended in the cosmetic according to the present invention is not particularly limited as long as it is a water-insoluble powder that can be normally formulated in cosmetics, and inorganic powder and organic powders. However, the (c) colorant, which will be described later, and the powder filler or dispersant to be blended at the time of molding the product are not included in the component (b). (b) As the water-insoluble powder component, various shapes such as spherical shape, plate shape, and lump shape can be used. In this invention, it is preferable to use the thing with an average particle diameter of 1-50 micrometers. In addition, when preparing the cosmetic of the present invention in the form of a stick, it is preferable to use that having an average particle diameter of 2 to 30 µm.

Any of natural and synthetic materials can be arbitrarily used for the inorganic powder, and although not limited to, talc, kaolin, mica (mica), cirrus mica (sericite), muscovite, phlogopite mica, synthetic mica, synthetic phlogopite mica, synthetic gold Iron mica, muscovite, biotite, calcined talc, calcined cerasite, calcined muscovite, calcined phlogopite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salt, magnesium, Spherical silica, porous silica particles, borosilicate (Ca/Al), zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, titanium oxide, aluminum oxide, silicon oxide, oxide Zinc, iron oxide, metallic soap (eg, zinc myristate, magnesium myristate, calcium palmitate, aluminum stearate, etc.), boron nitride, photochromic titanium oxide (titanium dioxide obtained by sintering iron oxide); reduced zincization and the like.

Although not limited to organic powder, silicone elastomer powder (for example, (vinyldimethicone/methiconesilsesquioxane) crosspolymer [trade name: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)]); Silicone powder (for example, polymethylsilsesquioxane [trade name: Tospearl 2000B (manufactured by Momentive Performance Materials Inc.)]), silicone resin-coated silicone elastomer powder, polyamide resin powder (nylon powder) (for example, nylon- 12 [trade name: SP-500 (manufactured by Toray Industries, Inc.)]), polyethylene powder, polymethyl methacrylate powder (for example, methyl methacrylate crosspolymer [trade name: Microspare M-306, M-330 ( MATSUMOTO YUSHI SEIYAKU CO., LTD.)]), polystyrene powder, copolymer resin powder of styrene and acrylic acid, cross-linked polyurethane copolymer resin powder (such as (HDI/trimethylolhexyllactone) crosspolymer [brand name: Plastic powder D (manufactured by TOSHIKI)]), benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder (eg, cellulose [brand name: Celluflow C-25 (manufactured by CHISSO CORPORATION)]), corn starch, etc. can be heard

The powder component used in the present invention may be subjected to hydrophobization surface treatment. Although it does not restrict|limit especially as a hydrophobization surface treatment, For example, silicone treatment (silicone oil, such as methylhydrogenpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane; methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, jade Alkylsilane such as tyltrimethoxysilane, treatment with fluoroalkylsilane such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane), fatty acid treatment (palmitic acid, isostearic acid, Treatment with stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, rosin acid, 12-hydroxystearic acid, etc.), fatty acid soap treatment (treatment with aluminum stearate, calcium stearate, etc.), fatty acid ester treatment (treatment with aluminum stearate, calcium stearate, etc.) treatment with dextrin fatty acid ester, cholesterol fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, etc.) and the like. These hydrophobization treatment can be performed according to a conventional method.

As (b) component of this invention, the said powder component may be used individually by 1 type, and 2 or more types may be mixed and used for it. As component (b) of the present invention, it is preferable to use at least one selected from mica, synthetic phlogopite mica, porous silica powder, silicone elastomer powder, silicone powder, nylon powder, and polymethyl methacrylate powder, and synthetic phlogopite mica. , it is more preferable to use at least one selected from silica, nylon, and methyl methacrylate crosspolymer.

The compounding quantity of the component (b) in the cosmetic which concerns on this invention is 2-15 mass % with respect to the cosmetics whole quantity, Preferably it is 3-10 mass %. When the blending amount is less than 2% by mass, it is difficult to obtain a change in color tone, and when it exceeds 15% by mass, it is difficult to obtain a smooth feeling of use.

According to the present invention, when the cosmetic is applied on the skin, the particles containing the pigment are not crushed but are held on the coated surface by having the above configuration. In addition, by applying a friction force greater than the friction force generated when the cosmetic is applied to the skin by rubbing the skin on the application surface with each other or rubbing the application surface with a finger (well fusing the coating film), the particles containing the pigment are pulverized and The pigment is released and the color tone of the coating film is changed. ADVANTAGE OF THE INVENTION According to this invention, the color tone of a coating film can be adjusted to a desired time and a desired degree of a user.

<(c) Color material>

The color material (c) to be blended in the cosmetic according to the present invention (hereinafter, simply referred to as "component (c)") is not particularly limited as long as it is a color material that can be usually blended in cosmetics. By way of example, it may be selected from organic synthetic pigments (including tar pigments, dyes, lakes, organic pigments), natural pigments and inorganic pigments.

As organic synthetic dyes, the dyes listed in the legal dyes Tables 1 to 3, specifically, Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Yellow No. 5, Green No. 3, Blue No. No. 1, Blue No. 2, Yellow No. 4, Red No. 201, Red No. 202, Red No. 203, Red No. 204, Red No. 205, Red No. 206, Red No. 207, Red No. 208, Red No. 213, Red No. 214 , Red No. 215, Red No. 218, Red No. 219, Red No. 220, Red No. 221, Red No. 223, Red No. 225, Red No. 227, Red No. 230, Red No. 231, Red No. 232, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 205, Orange No. 206, Orange No. 207, Yellow No. 201, Yellow No. 202, Yellow No. 203, Yellow No. 204, Yellow No. 205, Green No. 201, Green No. 202, Green No. , Green No. 205, Blue No. 201, Blue No. 202, Blue No. 203, Blue No. 204, Blue No. 205, Brown No. 201, Purple No. 201, Purple No. 401, Yellow No. 403, Red No. 401, Red No. 404, Red No. No. 405, Red No. 501, Red No. 502, Red No. 503, Red No. 504, Red No. 505, Red No. 226, Red No. 228, etc. are mentioned.

Examples of the natural pigment include carotenoid pigments such as β-carotene, flavonoid pigments, flavin pigments, quinone pigments, porphyrin pigments, diketone pigments, and betacyanidin pigments.

As inorganic pigments, red iron oxide (Bengala), iron oxide/titanium oxide sinter, cadmium red, molybdenum red, yellow iron oxide, cerium oxide, bismuth vanadium yellow, yellow lead, cadmium yellow, iron oxide, chromium oxide, ultramarine blue, royal blue, colored pigments such as carbon black; white pigments such as titanium oxide and zinc oxide; and pearlescent pigments such as mica titanium, young gourd, and bismuth oxychloride.

The blending amount of component (c) in the cosmetic according to the present invention is not particularly limited as long as it is an effective amount to achieve a desirable visual effect on the appearance of the cosmetic and color development on the skin at the time of application. In the present invention, less than 15% by mass, preferably 10% by mass or less with respect to the total amount of the cosmetic, for example, 0 to 10% by mass, preferably 0.1 to 10% by mass, more preferably 0 to 5% by mass, More preferably, by setting it as 0.1-5 mass %, the effect of the color tone change in a coating film becomes easy to be acquired.

The hardness of the cosmetic of the present invention is 5 to 1200 gf (in grams). When the cosmetic of the present invention is prepared in a stick shape, the hardness is 12 to 55 gf, and preferably 15 to 55 gf. Here, "hardness" is applied to a stick-shaped sample using a durometer (manufactured by FUDO) and a load (after 20 mm/s pressure, 50 gf open) is applied, and the number of loads until the sample is bent is measured, and brittleness value when evaluated.

When the hardness of the cosmetic is less than 5 gf, the base material is too soft, the particles containing the pigment are not pulverized, and sufficient color development cannot be obtained. In addition, when the hardness of the cosmetic exceeds 1200 gf, the base material is too hard and the usability deteriorates.

In the present invention, the term "solid" refers to a state in which it is solidified to an extent capable of maintaining a constant shape. In this case, the shape is not limited to the stick shape, and the chestnut shape (ointment shape) filled in the photosphere container and the cream shape which can maintain a constant shape are also included.

In the cosmetic of the present invention, when a frictional force greater than that generated when the cosmetic is applied to the skin is applied after application, the component (a) is pulverized and the pigment is released. Here, the friction force applied after application is specifically about 0.01N to 2N, and when rubbed for about 1 to 20 seconds, the component (a) is pulverized, resulting in color change.

In the cosmetic of the present invention, in order to change the color tone, it is necessary to apply a frictional force greater than that generated when the cosmetic is applied to the skin. When the cosmetic of the present invention is prepared in a stick shape, it is possible to suppress frictional force generated during application to a small extent. Accordingly, the stick-shaped cosmetic contributes to sufficient retention of the component (a) in the cosmetic coating film.

other optional ingredients

<oil>

The oil to be formulated in the cosmetic according to the present invention is an oil generally used in cosmetics, and is selected from a solid or semi-solid solid oil at room temperature (25° C.) and a liquid oil component at room temperature (25° C.).

Examples of the solid oil include solid paraffin, microcrystalline wax, ceresin, varico wax, polyethylene wax, silicone wax, behenyl alcohol, stearyl alcohol, cetyl alcohol, batyl alcohol, carnauba wax, beeswax (bees wax). , candelilla wax, jojoba wax, lanolin, select wax, brazing wax, Japanese axe, myristic acid, pallitic acid, stearic acid, behenic acid, 12-hydroxystearic acid, cacao fat, hydrogenated castor oil, hydrogenated oil, hydrogenated palm oil, Palm oil, hydrogenated palm oil, polyethylene powder, petrolatum, various hydrogenated animal and plant oils and fats, fatty acid monocarboxylic acid lanolin alcohol ester, etc. are mentioned.

As the liquid oil, for example, olive oil, avocado oil, camellia oil, macadamia nut oil, evening primrose oil, jojoba oil, rapeseed oil, egg yolk oil, sesame oil, castor oil, safflower seed oil, cottonseed oil, soybean oil, teaseed oil, rice bran oil, wheat germ oil , Germ oil, peanut oil, sunflower oil, almond oil, corn oil, turtle oil, mink oil, perilla oil, camellia oil, flaxseed oil, perilla oil, lemongrass oil, Japanese tung oil, meadowfoam oil, squalene, squalane, vegetable squalane , Jojoba alcohol, liquid paraffin, polybutene, hydrogenated polyisobutene, isocetyl isostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylol propane tri-2-ethylhexanoate, tetra -2-ethylhexanoate pentaerythrityl, cetyl octanoate, pentaerythryl tetraoctanoate, tri-2-heptylundecanoic acid glyceride, diisobutyl adipate, 2-hexyldecyl sebacate, glycerin trioctanoate, Glycerin triisopalmitate, diisostearyl malate, isopropyl myristate, 2-octyldodecyl oleate, hexyldecyl dimethyloctanoate, 2-hexyldecyl myristate, myristyl myristate, octyldodecyl myristate , isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, butyl stearate, isocetyl stearate, decyl oleate, dodecyloleate, oleyl oleate , myristyl lactate, cetyl lactate, 12-hydroxystearyl cholesteryl, castor oil fatty acid methyl ester, succinate 2-ethylhexyl, adipic acid 2-hexyldecyl, adipic acid di-2-heptylundecyl, Diisopropyl sebacate, di-2-ethylhexyl sebacate, neopentyl glycol dicaprate, neopentyl glycol dioctanoate, glycerin tri-2-ethylhexanoate, glycerin trimyristic acid, trimethylolpropane triisostearate , triisostearic acid diglyceryl, tri2-ethylhexanoic acid glyceryl, dimethicone, dimethylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, triglycerin, oleic acid, tall oil fatty acid, isostearic acid , lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, methyl polysiloxane, methyl hydrogen polysilox Acid, cyclic polysiloxane, isopropyl myristic acid, hexyl laurate, diethyl phthalate, dibutyl phthalate, dioctyl succinate, fluorine denatured oil, trioctanoin, tripropylene glycol dipivarate, di(phyto)lauroylglutamic acid steryl/octyldodecyl) and the like.

In the cosmetic of the present invention, it is preferable to use a combination of a solid oil and a liquid oil from the viewpoint of improving the spreadability and compatibility with the skin when applied to the skin.

In the cosmetic of the present invention, in addition to the above compounding ingredients, if necessary, oil-soluble film agent, surfactant, lower alcohol (ethanol, etc.), moisturizer, ultraviolet absorber, thickener, dispersant, stabilizer, antioxidant, preservative, bactericide, pH adjuster , vitamins, blood circulation promoters, whitening agents, skin activators, medicinal ingredients, extracts from animals and plants, fragrances, etc. ingredients commonly used in cosmetics can be blended in a range that does not impair the effects of the present invention. However, it is not limited to these examples.

The cosmetic of the present invention is solid and can be formulated in oily type, water-in-oil type, or water-in-water type emulsification type, and can be formulated in a cream form, chestnut form, or stick form. Moreover, you may prepare it as the powdery solid cosmetic which mix|blended the powder abundantly.

In addition, although the cosmetic of the present invention can be prepared with various cosmetics, the effect of the present invention is preferably exhibited by preparing it as a makeup cosmetic, particularly, a color makeup cosmetic for lips, eyes, and cheeks.

The solid cosmetic according to the present invention can be manufactured according to a conventionally used method. For example, it can manufacture by separately mixing an oil component and a powder component, adding a powder component to an oil component, stirring, filling, and performing a press as needed. Alternatively, when preparing the cosmetic of the present invention as an emulsified cosmetic, the oily component and the aqueous component are mixed with heating as needed, respectively, the aqueous phase is emulsified in the oil phase, and then the obtained emulsion can be filled in a container and slowly cooled. .

The cosmetic of the present invention is novel in that it is possible for the user to adjust the color tone of the cosmetic coating film by himself/herself after the cosmetic is applied to the skin.

Accordingly, the present invention provides a cosmetic application comprising the steps of (A) applying the solid cosmetic of the present invention to the skin, and (B) applying a frictional force greater than that generated when the cosmetic is applied to the skin to the coating film. A method for changing the color tone of a film is provided. It is preferable that the frictional force greater than the frictional force generated when the cosmetic is applied to the skin is a force of about 0.01 to 2N.

Example

The present invention will be further described in detail below with reference to Examples, but the present invention is not limited thereto. Unless otherwise specified, the blending amount is expressed in mass% with respect to the system in which the component is blended.

Prior to the Examples, the evaluation method used in the present invention will be described.

(1) hardness

A load (after 20 mm/s press, 50 gf open) was applied to the sample prepared in the stick shape using a durometer (manufactured by FUDO), the number of loads until the sample was bent was measured, and brittleness was evaluated.

(2) color change

The sample was applied to the artificial skin on the tactile force plate, and the change in color tone of the coated surface generated when the sample was rubbed so that the friction force and the friction time became constant was visually observed.

A++: A very clear color change was observed.

A+: A clear color change was observed.

A: A color change was observed.

B: A slight color change was observed.

C: A color change was not observed.

(3) feeling of use

It evaluated by the practical use test by 10 expert panelists. Specifically, the prepared sample was applied to the face of the expert panel with a finger, and sensory evaluation was performed about the feeling of use when spreading. Here, using Test Example 1 as a control, the evaluation when compared with the control was scored, and the average value obtained by dividing the total of the scores by each panel by the number of panel members was calculated, and the evaluation results were obtained according to the following evaluation criteria .

(based on scoring)

+2: It spreads very smoothly compared to Sample 1

+1: It spreads smoothly compared to Sample 1

0: Spread evenly

-1: It is slightly more difficult to spread compared to Sample 1

-2: Compared to Sample 1, it is puffy and difficult to spread.

(Evaluation standard)

A++: The average value of 10 panelists is +2.0 or higher

A+: The average value of 10 panelists is +1.0 or more and less than +2.0

A: The average value of 10 panelists was 0 or more and less than +1.0.

B: The average value of 10 panelists is -0.5 or more and less than 0 points

C: The average value of 10 panelists is less than -0.5

(Test Examples 1 to 19)

Test Examples 1 to 19 shown in Tables 1 and 2 below were prepared. Specifically, the powder was dispersed in the oily component mixed using a homomixer, and then the well mixed aqueous component was added to obtain a composition.

Test Examples 1 to 14 of Table 1 differ in the amount of powder component blended. When the compounding quantity of the powder component was 1 mass % or less, the change of color tone could not be observed.

On the other hand, when the compounding quantity of a powder component became 20 mass % or more, the feeling of use at the time of application|coating worsened.

Test Examples 15 to 19 in Table 2 were different in the amount of colorant blended. Although both test examples were excellent in usability, in the test example which mix|blended 15 mass % or more of a color material, the effect of a color tone change was hard to be acquired.

(Test Examples 20 to 28)

Next, Test Examples 20 to 28 shown in Table 3 below were prepared. Test Examples 20 to 28 differed in the powder components used.

It is not limited to the kind of powder component, and the composition was able to observe sufficient color change by applying frictional force to the coating film. Moreover, both compositions were excellent in the feel of use.

Claims (5)

(a) particles comprising a pigment, wherein some or all of the appearance color of the pigment is masked;
(b) 2 to 15% by mass of water-insoluble powder components (excluding colorants) based on the total amount of the cosmetic, and
(c) A solid cosmetic comprising 10% by mass or less of a colorant based on the total amount of the cosmetic. The method of claim 1,
A solid cosmetic having a hardness of 12 to 55 gf. 3. The method of claim 1 or 2,
A solid cosmetic wherein the component (a) is a multi-layered capsule particle containing a pigment. 4. The method according to any one of claims 1 to 3,
An oil-based cosmetic, a solid cosmetic. Particles containing a pigment and masking part or all of the external color of the pigment, 2 to 15 mass % of water-insoluble powder components (excluding colorants) based on the total amount of the cosmetic, and 10 mass % or less with respect to the total amount of the cosmetic A process of applying a solid cosmetic containing a colorant to the skin, and
A method of changing the color tone of a cosmetic coating film, comprising the step of applying a frictional force greater than a frictional force generated when a cosmetic is applied to the coating film.