JPH0156044B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to skin cosmetics, particularly skin cosmetics containing porous powder containing proteins and tannins. [Prior Art] It is known that porous powders are blended into conventional skin cosmetics, such as cake-type foundations, and it is also already known that porous powders can be blended into astringent lotions and the like by taking advantage of the astringent action of tannins. It is being [Problems to be solved by the invention] However, although conventional products containing simple porous powder have the effect of absorbing sweat, the powder absorbs even sebum from the skin and removes it, causing skin irritation in early autumn. It has the disadvantage of drying the skin, and for people with weak sebum secretion, the skin tends to be rough even in summer, and when wearing cakes, etc., the color becomes dull due to sweat after applying makeup. In addition, products that contain tannins as they are are highly irritating to the skin, and because they bind directly to skin proteins, they tend to dry out the skin, causing problems beyond makeup smearing and streaking. [Means for Solving the Problems] The present invention solves these conventional problems by alleviating the skin irritation and drying properties of tannins, as well as exerting a moderate astringent effect on porous powders. This product provides water repellency and water retention, improves adhesion, and prevents skin roughness and makeup fading, thereby making the best use of both advantages and eliminating their shortcomings. That is, the present invention provides a protein-tannin combination obtained by adding an aqueous tannic acid solution or a tannin-containing plant extract to a porous powder that has been impregnated or attached with protein, stirring the mixture, and then concentrating and drying or freeze-drying the resulting protein-tannin combination. This skin cosmetic is characterized by containing a porous powder containing the following: In the present invention, various inorganic and organic materials can be used as the porous powder, and particularly preferred examples include silica powder, crystalline cellulose, acrylic resin powder, silk powder, and collagen powder. Further, as the protein to be impregnated or attached to the porous powder, various animal or plant-derived substances can be used, and suitable examples include elastin, gelatin, casein, collagen, lecithin, and silk powder. Note that if the porous powder is a powder that itself is made of protein, such as silk powder or collagen, or a powder that contains protein, the process of impregnating or adhering the protein can be omitted. As a means of impregnating or adhering proteins to a non-protein porous powder, it is usually sufficient to add the porous powder to water or a water-alcohol mixed solvent of the protein and thoroughly stir the mixture under heating. Then, the next tannin solution may be added to this dispersion for treatment. In this case, it is usually preferable to dissolve 3 to 50 parts of protein in 5 to 70 parts of non-protein porous powder (same weight below) in water or a water-alcohol mixed solvent in the range of 50 to 100 parts. The amount of tannic acid aqueous solution or tannin-containing plant extract used in the tannin addition treatment is usually preferably in the range of 1.0 to 30 parts. Through such treatment, the porous powder becomes impregnated with or attached with a combination of protein and tannin. When silk powder or collagen, which is itself a protein, is used as the porous powder, the addition treatment of a tannin-containing liquid yields a porous protein powder whose surface or interior is bound to tannins. Examples of the production of porous powder and cosmetics will be described below. (1) Manufacturing example 1 of porous powder (porous silica powder) - (elastin) -
(Tannic acid) Production of mixed treated product 50g of porous silica powder and 45g of 10% elastin aqueous solution are mixed and stirred, uniformly dispersed, and further
% tannic acid aqueous solution was added thereto, heated to 40° C., thoroughly mixed and stirred, and then dried under reduced pressure. After coarsely pulverized, the mixture was dried under reduced pressure to obtain 53.0 g of a mixed product. Production example 2 (porous silica powder) - (elastin) -
(Hammamelis extract) Mixed product 40g of porous silica powder and 40g of 10% elastin aqueous solution are mixed and stirred to uniformly disperse them, then 20g of Hamamelis extract is added, heated to 40℃, thoroughly mixed and stirred, and then dried under reduced pressure. The mixture was then roughly pulverized and dried under reduced pressure to obtain 43 g of a mixed product. Production example 3 (porous crystalline cellulose) - (elastin) -
(Hammamelis extract) Mixed product Made from the silica powder of Production Example-2 and crystalline cellulose. Production example 4 (porous silica powder) - (gelatin) -
(Hammamelis extract) Mixture processed product Elastin from Production Example-2 is converted into gelatin. Production example 5 (Silk powder) - (Tannic acid) mixed product 10 g of 5% tannic acid aqueous solution was added to 90 g of 30% silk powder aqueous solution, heated to 40°C, thoroughly mixed and stirred, then dried under reduced pressure, and further coarsely ground and dried under reduced pressure. 25 g of a mixed product was obtained. (2) Examples of cosmetics

[Table] Manufacturing method Mix 1 to 7, add 8, and mix. Further, 9 to 12 and 13 dissolved by heating are added, mixed, and pulverized to produce the product. Example 2: Foundation

[Table] Manufacturing method 1 to 8 were dissolved by heating and kept at 80℃. Separately, 9 to 17 were dissolved and dispersed by heating and kept at 83℃. Added and cooled while stirring and mixing. When the temperature was 50℃, 18 was added and then brought to room temperature. Prepare by cooling while stirring. Example 3: Base cream 1 Stearic acid 5.0 2 Behenyl alcohol 0.5 3 Squalane 15.0 4 Polyoxyethylene sorbitan monooleate 1.0 5 Polyoxyethylene sorbitan tetraoleate 1.5 6 Self-emulsifying glyceryl monostearate 3.0 7 Cetyl octoate 5.0 8 Paraoxybenzoic acid ester 0.2 9 1,3-butylene glycol 5.0 10 Purified water 55.6 11 (Porous silica powder) - (Elastin)
- (Hammamelis extract) mixed product 3.0 12 Purified water 5.0 13 Fragrance 0.2 Manufacturing method Dissolve 1 to 8 by heating and keeping at 78℃. Separately, add 9 and 10 by heating and dissolving and keep at 80℃ and mix with stirring. While cooling, add 11 to 13 at 50°C, and further cool to room temperature while stirring to prepare. Example 4: Deodorant powder 1 (porous silica powder) - (elastin)
-(Tannic acid) mixed product 20.0 2 Zinc oxide 4.0 3 Zinc stearate 3.0 4 Talc 70.7 5 Squalane 2.0 6 Fragrance 0.3 Manufacturing method Mix 1 to 4, and further add 5 and 6 and mix. Then crush. Example 5 Red blush 1 Talc 20.0 2 Mica 57.6 3 Kaolin 5.0 4 Titanium oxide 2.0 5 (Silk powder) - (Tannic acid mixed treatment product) 5.0 6 Pigment 3.0 7 Statutory pigment 0.4 8 Liquid paraffin 4.0 9 Octyldodecyl myristate 2.0 10 Octyldodecanol 1.0 11 Fragrance Appropriate amount Manufacturing method Mix 1-7 and then heat and dissolve 8-10 and 11
Add, mix and grind. [Effect of the invention] Actual results for Examples 1 and 2 (A, B, C, D)
Makeup was applied to 10 women and they were evaluated on the following criteria in terms of the feel of the product on the skin, dullness of the color, and the feeling of oiliness and dewyness. The results were as shown in the table below.

[Table] As is clear from the results, the present invention has extremely good functions necessary for a skin cosmetic, and also has a moderate astringent effect without irritation or side effects caused by tannins. The effect is extremely large.

Claims (1)

[Claims] 1 Protein-tannin bond obtained by adding tannic acid aqueous solution or tannin-containing plant extract to porous powder or porous protein powder impregnated or attached with protein, stirring the mixture, and concentrating and drying or freeze-drying the mixture. A skin cosmetic characterized by containing a porous powder containing a substance.