JPH0539436A - Water-repellent powder and cosmetic containing the same powder - Google Patents

Abstract

PURPOSE:To obtain the subject powder useful for cosmetic, etc., hiding color unevenness such as stain or freckle, having excellent touch in use, feeling of transparency, smoothness and water resistance by treating specific barium sulfate powder with an N-mono long-chain aliphatic acyl basic amino acid. CONSTITUTION:Barium sulfate powder showing a lamellar structure, having 5-100 aspect ratio and a ratio of square of peripheral length of lamellar face to area of orthograph of the lamellar face of 20/1 to 150/1 is subjected to surface treatment with 0.5-15wt.% Nmono long-chain aliphatic acyl basic amino acid such as Nepsilon-2-ethylhexanoyllysine to give the objective powder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in water repellency, has good spreadability on the skin, has a good feeling in use, gives a feeling of transparency and bare skin, and has color unevenness such as spots, freckles and the like existing on the skin. TECHNICAL FIELD The present invention relates to a water-repellent powder having an excellent effect of making it difficult to see and a cosmetic containing the powder.

[0002]

2. Description of the Related Art As cosmetics containing powder, makeup cosmetics such as foundation, white powder, blusher, eye shadow and eyebrow, body cosmetics such as body powder and baby powder are commercially available.

Due to the nature of their cosmetic effect, these cosmetics are required to hide color irregularities such as spots and freckles existing on the skin when they are applied to the skin, and they are spread and smooth on the skin. Performance such as water repellency and the like for preventing the feeling and collapse of sweat is also a problem. In order to meet the demand for hiding color unevenness, pigments with high hiding power, that is, pigments with a large refractive index and pigments with high coloring power, such as titanium dioxide, red iron oxide, iron oxide yellow, and organic pigments, have been compounded as coloring pigments. Then
The covering power has been increased, and a method has been taken to make it difficult to see color spots, freckles, and the like present on the skin. However, a pigment having a high hiding power as described above, that is, a cosmetic containing a large amount of a pigment having a large refracting power or a pigment having a high coloring power exhibits a thick makeup feeling when applied to the skin,
It has the drawback of becoming opaque and losing the natural feel of the skin.

On the other hand, in order to give the skin to which the makeup has been applied to the skin a feeling of transparency and a bare skin, it has been customary to mix pigments having a small refractive index such as talc, kaolin, mica and mica as extender pigments, Further, these extender pigments have been blended in a large amount in cosmetics because they have a better feeling of use such as spreading and sticking compared with the above-mentioned coloring pigments. However, if a large amount of such an extender pigment is blended, it tends to give a lustrous appearance or give an unnatural luster when applied to the skin, so the surface of these extender pigments should be coated with an inorganic silicic acid compound. (Japanese Patent Application Laid-Open No. 61-228406), coating with an acrylic resin (Japanese Patent Application Laid-Open No. 61-69708) and the like, and the resulting pigment is added to a cosmetic composition.
Attempts have been made to obtain transparency, bare skin, and a natural finish. However, when a cosmetic containing the extender pigment, the inorganic silicate compound-coated extender pigment, the acrylic resin-coated extender pigment, etc. as described above is applied to the skin, it is possible to give a transparent feeling and a bare skin feeling, but it is refraction itself. Since it is a pigment with a low rate, it has a drawback that it lacks the covering power and cannot fully exhibit the original function of the cosmetic, which hides the uneven color such as spots and freckles existing on the skin.

Further, when the cosmetic is applied to the skin, performances such as elongation and smoothness on the skin are also problems, and N-mono long-chain acyl basic amino acid is used to improve the feel and adhesion. Has been proposed (Japanese Patent Laid-Open No. 61-10503). However, as described above, pigments with high hiding power that have been conventionally used, that is, pigments with a large refractive index, pigments with high coloring power and extender pigments, inorganic silica compound-coated extender pigments, acrylic resin-coated extender pigments, etc. are transparent. It has the drawback that it cannot satisfy both the feeling of feeling and the feeling of bare skin and the cover of uneven color such as spots, freckles and the like which are present on the skin.

[0006]

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to have a transparent feeling and a bare skin feeling while concealing the color unevenness such as spots and freckles present on the skin, and moreover, the feeling in use, especially the smoothness, Another object of the present invention is to provide a water-repellent powder that simultaneously satisfies the four requirements for water repellency against sweat sweat and cosmetics containing the same.

[0007]

Therefore, as a result of intensive studies to solve the above problems, the present inventors have found that barium sulfate powder having a specific plate-like structure is surface-treated with N-mono long-chain acyl basic amino acid. Water-repellent powder having water repellency and excellent feel when used is obtained by the treatment, and by incorporating this, water resistance is extremely good and it has transparency and bare skin feel The present invention has been completed by finding that a cosmetic excellent in the ability to conceal existing color spots such as spots and freckles can be obtained.

That is, the present invention has a plate-like structure, has an aspect ratio of 5 to 100, and has a ratio of the square of the perimeter of the plate-like surface to the area of the orthogonal projection surface of the plate-like surface. 20:
A water-repellent powder obtained by surface-treating a barium sulfate powder of 1 to 150: 1 with an N-mono long-chain acyl basic amino acid, and a cosmetic containing the same.

The barium sulfate powder used in the present invention has a plate-like structure, has an aspect ratio of 5 to 100, and squares the perimeter of the plate-like surface and the area of the orthographic plane of the plate-like surface. Is defined as 20: 1 to 150: 1. Further, the shape is preferably a butterfly shape having one or two mirror image planes perpendicular to the plate-like surface and having a concave portion at the edge. Further, when this barium sulfate powder was subjected to X-ray diffraction, the diffraction peak intensity ratio of the (020) and (200) planes of the crystal became very large, and (020) / (20
0) = 1.5 to 100 is particularly preferable.

The barium sulfate powder is produced by reacting a barium salt solution with a sulfate solution. The barium salt used here is soluble in a solvent such as water or alcohol, and examples thereof include barium chloride, barium nitrate, barium acetate, and barium hydroxide.
Since the purity does not impair the transparency which is a feature of the cosmetics of the present invention, it is preferable that the metal ion other than barium is 1000 ppm or less. Further, the sulfate means water, a sulfate soluble in a solvent such as alcohol and sulfuric acid, and examples of the sulfate include sodium sulfate, ammonium sulfate and the like, but like the barium salt, a metal ion from the viewpoint of transparency. It is preferable to use a sulfate solution containing no.

The barium ion concentration of the barium salt solution and the sulfate ion concentration of the sulfate solution must be 0.001 to 0.05 mole / l before the reaction. If the concentration of these is less than 0.001 mole / l, the crystal plate-like structure collapses and becomes nearly columnar, resulting in a poor feeling of use and a low yield as barium sulfate, which is industrially undesirable. On the other hand, if it exceeds 0.05 mole / l, the plate-like structure of the crystal collapses to form fine particles, resulting in poor usability and a large light scattering effect, which is not preferable because of poor transparency. In the reaction, the barium salt solution and the sulfate solution are mixed in a molar ratio of 1:10 to 5: 1. Further, during the reaction, the pH is adjusted to 1.0 to 5.0, if necessary, with hydrochloric acid, sulfuric acid, and nitric acid, and the reaction temperature is 50 to 100 ° C, preferably 60 to 95 ° C.
If the pH and the reaction temperature deviate from this range, the crystal plate-like structure will collapse, and the usability and transparency will deteriorate.

The barium sulfate powder obtained as described above has a scattering transmittance of 70% or more and a total transmittance of 8 when a thin film having a powder concentration of 20% by weight and a thickness of 25 μm is formed.
It has an optical property of being 5% or more. A powder having such optical properties has a high total transmittance and thus a small amount of reflected and scattered light, while a large scattering transmittance causes a large amount of transmitted and scattered light. The transmitted light has the effect of being scattered and blurring the base, making it difficult to see. Such an effect does not exist in conventional pigments and is hereinafter referred to as "sharpness suppressing effect".

On the other hand, N-mono (aliphatic acyl having 8 to 22 carbon atoms) used for the surface treatment of the above barium sulfate powder.
As the basic amino acid that constitutes the basic amino acid,
Examples include α, γ-diaminobutyric acid, ornithine, lysine, arginine, histidine, etc. These may be optically active or racemic. The long-chain aliphatic acyl group is a saturated or unsaturated straight-chain or branched-chain aliphatic acyl group having 8 to 22 carbon atoms, which may have a single chain length or a mixed chain length. Good. Specifically, 2
-Ethylhexanoyl, capryloyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl, isostearoyl, oleoyl, behenoyl, cocoyl, tallow fatty acid acyl, hardened tallow fatty acid acyl and the like. The binding site of the long-chain acyl group to the basic amino acid is the α-position amino group or the ω-position amino group, but in arginine and histidine, it is limited to the α-position amino group. Specific examples include Nε-2-ethylhexanoyl lysine, Nε-lauroyl lysine, Nε-cocoyl lysine, Nε-palmitoyl lysine, Nε-isostearoyl lysine, Nε-hardened tallow fatty acid acyl lysine, N
α-capryloyl lysine, N α-lauroyl lysine, N
α-myristoyl lysine, N α-oleoyl lysine, N
α-behenoyl lysine, N δ-cocoyl ornithine, N
δ-stearoylornithine, Nδ-beef tallow fatty acylornithine, Nα-ethylhexanoylornithine, N
α-lauroylornithine, Nα-isostearoylornithine, Nγ-palmitoyl-α, γ-diaminobutyric acid, Nα-beef tallow fatty acid acyl-α, γ-diaminobutyric acid,
Nα-caproylarginine, Nα-lauroylarginine, Nα-palmitoylarginine, Nα-cured tallow fatty acid acylarginine, Nα-cocoylhistidine,
Examples include Nα-isostearoylhistidine,
It is not limited to these examples.

As a method for treating the barium sulfate powder with the N-mono long-chain aliphatic acyl basic amino acid, either a dry method or a wet method can be used. The dry method is simple and effective, and either the fine powder of N-mono long-chain aliphatic acyl basic amino acid is mixed with barium sulfate powder by stirring, or the N-mono long-chain aliphatic acyl basic amino acid and sulfuric acid are mixed. The surface of the barium sulfate powder can be easily treated by mixing the barium powder and then co-milling. Since the wet method hardly dissolves N-mono long-chain aliphatic acyl basic amino acids in water and neutral oil near neutrality, calcium chloride is used as a solubilizing agent, and N-mono long-chain aliphatic acyl basic amino acids are used. After being dissolved in an organic solvent, the surface of the barium sulfate powder can be treated by bringing it into contact with barium sulfate powder and further washing with water to remove calcium chloride and drying. Alternatively, the N-mono long-chain aliphatic acyl basic amino acid is dissolved in acidic or alkaline water or an aqueous solvent and contacted with barium sulfate powder, and then neutralized to near neutrality to form a barium sulfate powder surface. The same surface treatment can be carried out by depositing N-mono long-chain aliphatic acyl basic amino acid, depositing the salt produced by the neutralization by washing with water, and drying the salt (JP-A-61-2202).
No. 61-10503).

The amount of N-mono long-chain aliphatic acyl basic amino acid to be treated with respect to the barium sulfate powder is preferably 0.0.
It is 5 to 20% by weight, more preferably 0.5 to 15% by weight. If it is less than 0.05% by weight, the surface treatment effect is not sufficient, and if it exceeds 20% by weight, the treatment effect does not improve so much, so there is no advantage from the economical aspect.

The surface-treated powder thus obtained has an excellent effect of suppressing sharpness, an excellent water repellency, and a good feel when applied to the skin. Therefore, an excellent cosmetic composition can be obtained by using the powder. ..

The cosmetics of the present invention include foundation, powder powder, solid powder, blusher, eye shadow,
Makeup cosmetics such as lipstick and eyeliner and emulsion,
Basic cosmetics such as cream can be mentioned,
The form can be widely applied such as powder, cake, emulsion, oil, gel and the like.

The content of the surface-treated powder in the cosmetic of the present invention is arbitrarily selected according to the properties of the cosmetic, but is preferably 0.1 to 99% by weight in the total amount of the cosmetic ingredients.

In the cosmetic of the present invention, in addition to the surface-treated powder which is the above-mentioned essential component, if necessary, the components to be added to ordinary cosmetics within a range that does not impair the effects of the present invention, such as, for example, Various oils, surfactants, other powders, water-soluble polymers,
Preservatives, drugs, dyes, fragrances, moisturizers, UV absorbers, water and the like may be added.

As the oil, for example, liquid paraffin,
Vaseline, paraffin wax, squalane, beeswax, carnauba wax, olive oil, lanolin, higher alcohol, fatty acid, higher fatty acid, ester oil, ceresin, microcrystalline wax, candelilla wax, diglyceride, triglyceride, silicone oil, perfluoropolyether, perfluoro Oils commonly used in cosmetics such as decalin and perfluorooctane are used.
As the surfactant, for example, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, poly Nonionic surfactants such as oxyethylene sorbitol fatty acid esters; anionic surfactants represented by fatty acid soaps such as sodium stearate and triethanolamine palmitate; and cationic surfactants, amphoteric surfactants, etc. A surfactant commonly used in cosmetics is used. Examples of the water-soluble polymer include carboxymethyl cellulose, methyl cellulose, hydroxymethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, tragacanth gum, carrageenan, locust bean gum, dextrin, dextrin fatty acid ester, carboxyvinyl polymer, xanthan gum, gelatin, sodium alginate, and gum arabic. The water-soluble polymer widely used for cosmetics is used.

Examples of moisturizers include cosmetics such as sorbitol, xylitol, glycerin, maltitol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, sodium pyrrolidonecarboxylate, lactic acid, sodium lactate and polyethylene glycol. A moisturizer commonly used for is used. As a preservative,
For example, preservatives commonly used in cosmetics such as paraoxybenzoic acid alkyl ester, sodium benzoate and potassium sorbate are used. As the drug, for example, drugs commonly used in cosmetics such as vitamins, crude drugs, antiphlogistics, and bactericides are used. Examples of the ultraviolet absorber include paraaminobenzoic acid-based ultraviolet absorbers, anthranyl-based ultraviolet absorbers, salicylic acid-based ultraviolet absorbers, cinnamic acid-based ultraviolet absorbers, and benzophenone-based ultraviolet absorbers, which are commonly used in cosmetics. Used.

Examples of other powders include talc, mica, kaolin, sericite, muscovite, synthetic mica, phlogopite, phlogopite, biotite, lithia mica, vermiculite,
Magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, tungstate metal salt,
Hydroxyapatite, hydrous silicic acid, anhydrous silicic acid, magnesium oxide, bentonite, zeolite, ceramic powder, inorganic powder such as aluminum hydroxide; nylon powder, polyethylene powder, polymethylbenzoguanamine powder, polymethylmethacrylate powder, tetrafluoroethylene powder fine Organic powders of crystalline cellulose, rice starch lauroyl lysine, etc .; surfactant metal salt powders of calcium stearate, zinc stearate, magnesium stearate, magnesium myristate, calcium cetyl phosphate, sodium zinc cetyl phosphate, etc .; titanium oxide, oxidation Zinc, zirconium oxide, iron oxide (red iron oxide), iron titanate, iron hydroxide, ocher, black iron oxide, carbon black, mango violet, cobalt violet, oxidation Inorganic coloring powders such as ROM, chromium hydroxide, cobalt titanium, ultramarine, and navy blue; titanium oxide coated mica, titanium oxide coated bismuth oxychloride, bismuth oxychloride, titanium oxide coated talc, fish scale foil, colored titanium oxide coated mica, etc. Pearl pigment; aluminum powder, stainless powder,
Powders generally used for cosmetics such as metal powders such as copper powder, and powders treated with silicon or a fluorine compound are used.

As the dye, for example, red No. 3 and red 10
No. 4, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226
No., Red 227, Red 228, Red 230, Red 401, Red 505, Yellow 4, Yellow 5, Yellow 2
02, yellow 203, yellow 204, yellow 401,
Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, Green No. 205,
Orange 201, Orange 203, Orange 204, Orange 20
Tar dyes such as No. 6 and orange No. 207; natural dyes such as carminic acid, laccaic acid, bradylin, and crocin, which are commonly used in cosmetics, are used.

The cosmetic of the present invention can be produced by a conventional method except that the above-mentioned surface-treated powder is blended.

[0025]

The present invention will be described in more detail with reference to examples, but the present invention is not limited thereto. All compounding amounts are% by weight.

Reference Example 1 1.974 g of special grade barium chloride reagent and 0.50 of special grade sulfuric acid
Dissolve 5 g of each in 1000 g of ion-exchanged water,
A barium solution of 008 mole / l and a sulfuric acid solution of 0.005 mole / l were used. Next, each solution was heated to 70 ° C., a barium solution was added dropwise to the sulfuric acid solution stirred at a rotation speed of 1000 rpm for 10 minutes using a U-shaped stirring spring, and then stirring was continued for 3 minutes to complete the reaction. The pH during the reaction was 3.5. Then, the mixture was cooled to room temperature, filtered through a 5C filter paper, washed with water, and dried at 105 ° C. for 2 hours to obtain barium sulfate powder 1.
12 g was obtained. The obtained powder has a plate-shaped surface having an average diameter of 5.
The thickness was 3 μm, the aspect ratio was 58, and the ratio of the square length of the plate-like surface to the area of the orthogonal projection surface of the plate-like surface was 88: 1.
In addition, in the X-ray diffraction, (020)
The diffraction peak ratio of the (200) plane and the (200) plane was 5.3, and it had a butterfly shape. The plate-like structure was well developed, and the powder was transparent and slippery. Here, the degree of development of the plate-like structure was measured as follows. That is, 1 g of powder is dispersed in 50 cc of ethanol, and then a thin film having a thickness of about 15 μm is formed on a glass plate and dried, and then X
The intensity ratio of the (020) / (200) diffraction peak of the crystal was evaluated by line diffraction. X-ray diffraction is manufactured by Rigaku Denki (model;
RAD-200) was performed at Cukα ray, 40 kV, and 80 mV.

Production Example 1 The butterfly-like barium sulfate obtained in Reference Example 1 was added to 150
g and N-lauroyl lysine 7.5 g were put in a Henschel mixer and stirred and mixed for 10 minutes to perform surface treatment to obtain 155 g of target water-repellent powder N-lauroyl lysine treated butterfly-like barium sulfate.

Production Example 2 50 g of the butterfly-shaped barium sulfate obtained in Reference Example 1 is placed in a round bottom flask (or kneader). 50 g of calcium chloride was dissolved in 2500 g of ethanol in advance, then 2.5 g of N-lauroyl lysine was dissolved, and the mixture was stirred and mixed at room temperature for 2 hours. Next, this was filtered, washed with water to remove calcium chloride, and then dried to obtain 51 g of target water-repellent powder N-lauroyl lysine-treated butterfly-like barium sulfate.

Test Example 1 Water repellency and touch of the surface-treated powders obtained in Production Examples 1 and 2 were evaluated. (Water repellency evaluation method) About 0.05 g of each powder was floated on 15 ml of water in a 30 ml beaker, and the beaker was shaken to observe the dispersibility of the powder in water. The evaluation was based on the following criteria. 0: The powder was immediately dispersed in water. 1: When the beaker was shaken, the powder was almost dispersed in water within 30 seconds. 2: After shaking the beaker, the water became cloudy after 1 minute, but floating powder was also seen. 3: When the beaker was shaken, water became cloudy after 1 minute, but many powders floated. 4: When the beaker was shaken, water did not turn cloudy after 1 minute and no dispersed powder was observed. No powder dispersed in water was observed even if the beaker was shaken for 5 minutes or more. (Feeling evaluation method) The feeling of the powder was evaluated by five specialized panelists from the smoothness, squeaky feeling, and roughness of the powder on the following five-grade scale of 1 to 5, and the average value was shown. In addition, a plate-shaped barium sulfate H having an average particle size of 5 μm (manufactured by Sakai Chemical Industry Co., Ltd .: aspect ratio = 5, ratio of square of perimeter of plate-shaped surface to area of orthogonal projection surface = 9: 1) The feel of the untreated powder was set to a standard value of 3.0. 1: Feeling of smoothness etc. is bad 2: Feeling of smoothness etc. is slightly bad 3: Normal (equivalent to plate-like barium sulfate H) 4: Feeling of smoothness etc. is slightly good 5: Feeling of smoothness etc. is good The results are shown in Table 1.

[0030]

[Table 1]

It can be seen from Table 1 that the surface-treated powder of the present invention is excellent in both water repellency and feel as compared with untreated plate-shaped barium sulfate.

Example 1 Using the surface-treated powder obtained in Production Example 2, a pressed face powder shown in Table 2 was prepared, and its feeling of use and feeling of finish were evaluated. The results are shown in Table 4. (Production method) Powder components 1 to 6 are mixed and pulverized. This was transferred to a Henschel mixer, and the oil layer components 7 and 8 were added and mixed uniformly. Ingredient 9 was added to this mixture, mixed, and then ground again and passed through a sieve. This was press-molded on a gold plate to obtain a product.

[0033]

[Table 2]

(Evaluation method) In the evaluation, 16 professional panelists evaluated Example 1 against Comparative Examples 1 and 2 on the basis of the following items with respect to the following items, and the total evaluation points of 16 panelists are shown in Table 4. Indicated. Item 1: Feeling of use Item 2: Feel of bare skin (transparency) Item 3: Difficult to see uneven skin color

[0035]

[Table 3]

[0036]

[Table 4]

As is clear from Table 4, the cosmetics of the present invention, when applied to the skin, are more effective than Comparative Examples 1 and 2 due to the sharpness-suppressing effect of the blended surface-treated powders, such as spots and freckles. It is clear that it is an excellent face powder that conventional cosmetics do not have. For example, it is difficult to see the color unevenness and the surface feeling is improved by N-mono long-chain fatty acid acyl basic amino acid. Became.

Example 3 Powder Foundation (Production Method) Powder components 1 to 7 were mixed and ground. This was transferred to a Henschel mixer, and the oil layer components 8 to 10 were added and uniformly mixed. Ingredient 11 was added to this mixture and mixed, then pulverized again and passed through a sieve. This was press-molded on a gold plate to obtain a product. (Composition) (wt%) 1. Surface-treated powder of Production Example 2 50.0 2. Remaining amount of mica 3. Talc 20.0 4. Titanium oxide 10.0 5. Red iron oxide 0.8 6. Yellow iron oxide 2.5 7. Black iron oxide 0.1 8. Liquid paraffin 8.0 9. Beeswax 2.0 10. Preservative appropriate amount 11. Fragrance Total 100

Example 4 Powder powder (manufacturing method) Powder components 1 to 8 were mixed and pulverized. This was transferred to a Henschel mixer, and the ingredients 9 and 10 were further added and mixed uniformly. The mixture was ground and sieved to obtain the product. (Composition) (wt%) 1. Surface-treated powder of Production Example 2 50.0 2. Remaining amount of mica 3. Talc 20.0 4. Titanium oxide 0.5 5. Red iron oxide 0.1 6. Yellow iron oxide 0.1 7. Black iron oxide 0.01 8. Magnesium stearate 10.0 9. Preservative Suitable amount 10. Fragrance Total 100

Example 5 Creamy foundation (Production method) Powder components 11 to 14 were mixed and pulverized. Separately, a solution in which the aqueous phase components 7 to 10 were mixed was prepared, and the pulverized pigment was added and dispersed, and then heated to 75 ° C. Oil phase components 1-6
What was melt | dissolved by heating at 80 degreeC was added to the water phase prepared previously, and was stirred, and was emulsified. Cool this with stirring and
Component 15 was added at 0 ° C. and cooled with stirring to obtain a product. (Composition) (wt%) 1. Stearic acid 5.5 2. Lipophilic type glyceryl monostearate 2.5 3. Cetostearyl alcohol 1.0 4. Propylene glycol monolaurate 3.0 5. Squalane 7.0 6. Olive oil 8.0 7. Purified water Remaining amount 8. Preservative appropriate amount 9. Triethanolamine 1.2 10. Sorbit 3.0 11. Titanium oxide 10.0 12. Talc 5.0 13. Coloring pigment (black iron oxide, red iron oxide, yellow iron oxide) Suitable amount 14. Surface-treated powder of Production Example 8.0 15. Fragrance Total 100

Example 6 Blusher (manufacturing method) Powder components 1 to 7 were mixed and pulverized. This was transferred to a Henschel mixer, and the oil layer components 8 to 10 were added and uniformly mixed. The mixture was ground again and passed through a sieve. This was press-molded on a gold plate to obtain a product. (Composition) (wt%) 1. Surface-treated powder of Production Example 2 50.0 2. Remaining amount of mica 3. Talc 20.0 4. Titanium oxide 4.0 5. Zinc stearate 5.0 6. Rice starch 5.0 7. Color material 3.0 8. Liquid paraffin 3.0 9. Preservative Suitable amount 10. Fragrance Total 100

Example 7 Eye Shadow (Production Method) Powder components 1 to 7 were mixed and pulverized. This was transferred to a Henschel mixer, and the oil layer components 8 to 10 were added and uniformly mixed. The mixture was ground again and passed through a sieve. This was press-molded on a gold plate to obtain a product. (Composition) (wt%) 1. Surface-treated powder of Production Example 2 50.0 2. Remaining amount of mica 3. Talc 5.0 4. Mica titanium 5.0 5. Zinc stearate 5.0 6. Zinc laurate 3.0 7. Color material 10.0 8. Liquid paraffin 7.5 9. Preservative Suitable amount 10. Fragrance Total 100

Example 8 Lipstick (manufacturing method) Powder components 7 to 14 were melted by heating and uniformly mixed. 1 to 6 are added to this, and the mixture is kneaded by a roll mill and uniformly dispersed, then remelted and added with 15 to 17 to defoam, then poured into a mold and rapidly cooled to solidify. Remove the solid from the mold and fill the container. Then, in order to adjust the appearance of the stick, it is passed through a flame and the surface is made uniform. (Composition) (wt%) 1. Titanium oxide 1.0 2. Red No. 201 1.0 3. Red No. 202 2.0 4. Blue No. 4 aluminum rake 1.0 5. Red No. 223 0.1 6. Surface-treated powder of Production Example 5.0 7. Castor oil 46.9 8. Octyldodecanol 15.0 9. Lanolin 5.0 10. Liquid lanolin 5.0 11. Beeswax 5.0 12. Ozokelite 4.0 13. Candelilla Row 7.0 14. Carnauba Barrow 1.0 15. Suitable amount of antioxidant 16. Preservative trace amount 17. Fragrance suitable amount total 100

Example 9 6 was added to a part of the eyeliner (manufacturing method) 5 and passed through a colloid mill to disperse and gel. On the other hand, 1 to 4 and 10 were mixed, heated and dissolved, added 7 to 9, cooled, kneaded with a roll mill, heated again to be melted, and bentonite gel and the remaining 5 were added and stirred. While cooling. (Composition) (wt%) 1. Carnauba Barrow 5.0 2. Beeswax 1.0 3. Microcrystalline wax 10.0 4. White petrolatum 1.0 5. Light liquid isoparaffin 67.5 6. Organic bentonite 0.5 7. Surface-treated powder in Production Example 2 10.0 8. Titanium oxide 3.0 9. Carbon black 2.0 10. Preservative Suitable amount 100

Example 10 O / W cream (manufacturing method) 8, 9, 12 and 13 were mixed by stirring and kept at 80 ° C. The other components were mixed, heated and dissolved to 80 ° C. The above-mentioned water phase portion was added to this oil phase portion for preliminary emulsification, and the mixture was uniformly emulsified with a homomixer and then cooled to 30 ° C to obtain a product. (Composition) (wt%) 1. Beeswax 5.5 2. Cetanol 4.5 3. Hydrogenated lanolin 7.0 4. Squalane 33.0 5. Fatty acid glycerin 3.5 6. Lipophilic glyceryl monostearate 2.0 7. Polyoxyethylene sorbitan mono lauric acid ester (20EO) 2.0 8. Surface-treated powder of Production Example 2 8.0 9. Perfume 0.1 10. Preservative 0.2 11. Antioxidant 0.1 12. Propylene glycol 10.0 13. Purified water Total residual amount 100 When any of the cosmetics obtained in Examples 3 to 10 is applied to the skin, it becomes difficult to see color spots, freckles, etc. due to the sharpness suppressing effect of the surface-treated powder blended. Above all, it is very good that conventional cosmetics do not have such an improved feeling of use.

[0046]

EFFECTS OF THE INVENTION According to the present invention, while having a transparent feeling and a bare skin feeling, it hides color unevenness such as spots and freckles present on the skin, and is excellent in the feeling to use, especially smoothness, and water resistance against sweat sweating. We were able to provide cosmetics that satisfied the four parties at the same time.

Claims (2)

[Claims] 1. A plate-like structure having an aspect ratio of 5
To 100 and the ratio of the square of the perimeter of the plate-like surface to the area of the orthogonal projection surface of the plate-like surface is 20: 1 to 150: 1. A water-repellent powder obtained by surface treatment with an aliphatic acyl basic amino acid. 2. A cosmetic comprising the water repellent powder according to claim 1.