JPS635010A - Cosmetic - Google Patents

Abstract

PURPOSE:An improved cosmetic having synergistically increased improved effects on skin touch, using both a soluble collagen and a cationic polysaccharide having a specific nitrogen content. CONSTITUTION:A cosmetic usable as skin cosmetic such as cream, milky lotion, toilet lotion, beauty culture solution, etc., hair cosmetic, etc., containing both a soluble collagen [especially preferably extracted and purified collagen (atherocollagen) from which telopeptide is removed, obtained by treating corium tissue of young bovine or swine with pepsin, extracting and purifying and preferably 0.001-0.5wt% blended amount] and a cationic polysaccharide having 1.5-2.5wt% nitrogen content (especially preferably cationic cellulose having 1.5-2.5wt% nitrogen content and 0.001-2.0wt%, especially preferably 0.01-1.0wt% blended amount). Suitable for treating chapped skin in winter, skin after shaving, hair damaged by dyeing or permanent wave, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to cosmetics, and more particularly to skin products containing soluble collagen and a cationic polysaccharide having a nitrogen content of 1.5 to 2.5% by weight. This invention relates to cosmetics that have an excellent effect on improving the feel of skin.

[Conventional technology]

The stratum corneum of normal skin normally contains 10 to 30% water, maintaining elasticity and flexibility, but when this decreases to less than 10% due to environmental conditions, it is called dry skin. It is known that under such conditions, the skin loses its elasticity, causing various problems. To solve this problem, conventional moisturizers such as glycerin,
Cosmetics containing propylene glycol, sodium pyrrolidone cardate, etc. have been used.

[Problem that the invention seeks to solve]

However, when these moisturizers are applied to the skin, they supply moisture to the stratum corneum on the skin surface, and this effect is temporary and is not affected by external environmental conditions. It had the disadvantage of being easy to accept.

On the other hand, in addition to the above-mentioned moisturizers, it has been reported that cosmetics containing soluble collagen and cationic polysaccharides have the effect of preventing rough skin and improving skin feel. However, soluble collagen alone has the disadvantage that although it has a slightly moist feeling and less stickiness, it is less smooth to the skin, and cationic polysaccharide alone has the disadvantage that although it feels smooth to the skin, it does not have a sticky feeling and is sticky. .

[Means for solving problems]

In view of these circumstances, the present inventors conducted intensive research to obtain cosmetics with excellent effects on skin feel improvement, and found that by using soluble collagen and a specific cationized polysaccharide in combination, the results show that when each is used alone, The present invention has been completed based on the discovery that the effect of improving skin feel is synergistically increased compared to the above.

That is, the present invention provides soluble collagen and nitrogen content of 1.
The present invention provides a cosmetic containing 5 to 2.5% by weight of a cationized polysaccharide.

The soluble collagen used in the present invention may be any collagen that is soluble in water. In particular, the dermal collagen of a young cow or pig is treated with pepsin and extracted into a sheath shape. Tided collagen (atelocollagen) is preferable in terms of skin safety.

The amount of soluble collagen blended is 0 in the total amount of the cosmetic of the present invention.
．． 001-0.5% by weight (pure content), especially 0.01-0.
2% by weight is preferred. If it is less than 0.001% by weight, the effects of the present invention will not be exhibited, and if it exceeds 0.5% by weight, the solubility will be poor.

Examples of the cationized polysaccharide used in the present invention include cationized starch with a nitrogen content of 1.5 to 2.5 M%, cationized cellulose, etc., and in particular, a nitrogen content of 1.5 M%.
~2.5% by weight of cationized cellulose is preferred. If the nitrogen content is less than 1.5% by weight, even if it is blended into cosmetics, it will not have enough affinity for the skin;
If it exceeds % by weight, it gives a sticky feeling during use, which is not preferable.

The amount of the cationized polysaccharide to be blended is preferably 0.001 to 2.0% by weight, particularly 0.01 to 1.0% by weight, based on the total amount of the cosmetic of the present invention. If it is less than 0.001% by weight, the effect of the present invention will not be exhibited, and if it exceeds 2.0% by weight, the viscosity of the system will increase too much and it will become glue-like, which is not preferable.

In addition to the above-mentioned essential ingredients, the cosmetics of the present invention include oils, surfactants, humectants, which are commonly used as cosmetic ingredients.
Ingredients commonly used in cosmetics, such as ultraviolet absorbers, alcohols, chelating agents, pH adjusters, preservatives, thickeners, pigments, and fragrances, can be appropriately blended. Of course, these must be within a range that does not impair the effects of the present invention.

[Action and effect of the invention]

The cosmetics of the present invention have an excellent skin feel improvement effect, and can be used not only as skin cosmetics such as creams, milky lotions, lotions, and serums, but also as hair cosmetics, for rough skin in winter and after shaving. Suitable for caring for skin, rough hands, hair dyeing, and hair damaged by Q-Ma.

〔Example〕

Next, the present invention will be explained with reference to Examples.

Example 1 A lotion having the composition shown in Table 1 below was manufactured, and its effect on improving skin feel was tested.

Margin below *Neartero collagen (manufactured by Kouken).

Negi: Obtained by the reaction of hydroxyethyl cellulose (UC (manufactured by 4: 2, degree of polymerization 1300, molecular weight approximately 400,000) and glycysoltrimethylammonium chloride (manufactured by Hanmoto Yakuhin Co., Ltd.). Nitrogen content 1.5-2 .5%.

(Production method) After dissolving glycerin in ion-exchanged water, add 1.3
- Soluble collagen moistened with butylene glycol was gradually added and uniformly dissolved, and while stirring, 1 portion of cationized cellulose was added and uniformly dissolved to obtain a human face.

Next, in ethanol, add Q-methyl oxybenzoate, fragrance, polyoxyethylene oleyl ether (25E, O,
) was gradually added to the human face with stirring, solubilized, and filtered to obtain lotions of the present invention (Inventive Product 1 and Inventive Product 2). Comparative products 1 to 3 were also manufactured in the same manner.

<Test method> (1) Effect of reducing slip resistance 40 women aged 20 to 40 were tested as test subjects of the present invention 1,
Inventive product 2, comparative product 2, and comparative product 3 were divided into four groups to be tested, with 10 people in each group. The lotion of Comparative Product 1 was applied to the inside of the right arm, and the Invention Product 1, Invention Product 2, Comparative Product 2, and Comparative Product 3 of each group were applied to the inside of the left arm, and changes in slip resistance were observed after 2 hours. It was measured. In this method, an acrylic plate with a 50F weight was placed on the inner side of the arm, and the maximum load applied to a rheometer (manufactured by Fudo Kogyo@) was averaged to obtain a measured value.

(2) Practical test (e-nel test) 40 female subjects aged 20 to 40 were tested, comparing product 1 and comparison product 2, comparison product 1 and comparison product 3, comparison product 1 and invention product 1, and comparison product 1. The subjects were divided into four groups to test Inventive Product 2, with 10 people in each group.

After applying the lotion twice a day (morning and evening) for a consecutive week,
We investigated ``smoothness of the skin,'' ``skin feel,'' and ``stickiness.''

Results> The test results are shown in Table 2. In Table 2, the slip resistance values are shown as relative values when the slip resistance of Comparative Product 1 is taken as 100. The results of the practical test were shown by subtracting the number of subjects who answered that each test lotion was good for the evaluation items from the number of subjects who answered that Comparative Product 1 was good.

Table 2 As is clear from Table 2, the cosmetic of the present invention has a superior skin feel improvement effect compared to a cosmetic containing soluble collagen and cationized cellulose alone, and these ingredients It was proven that they act synergistically. Moreover, compared to milky lotions, IJ-mes, etc., lotions containing these ingredients were clearly different from each other, particularly in actual usage conditions.

Example 2 Emulsion oil phase components: Setanol 1.0% by weight Squalane 5.0 Vaseline
2.0 lanolin alcohol
0.5 style wJz relax in
5.0 stearic acid 2.0P
OE (10 Monooleic acid ester 2.0 Aqueous phase part: Glycerin 3.0% by weight Propylene glycol 3.0 Triethanolamine 1.0 Soluble colladan (1% liquid) 5.0 Cationized cellulose 10.1 Ethylno Q Rapen 0.1 Methylparaben 0.2 Fragrance
0.1 Purified water Quantity: Same as Example 1 *: Same as Example 1 (manufacturing method) According to the above recipe, mix the oil phase components and heat to dissolve at 70°C.
Keep it. The aqueous phase components are similarly heated and mixed at 70° C., and the above-mentioned oil phase is added to the aqueous phase and emulsified using an emulsifier.

An emulsion was prepared by cooling the emulsion to a final temperature of 30°C using a heat exchanger and then filling the mixture.

Example 3 Cream oil phase components: Vaseline 6.0% by weight Squalane 20
．． 0 cetanol 5
．． 0 jojoba oil 4
．． 0 monofatty acid glycerin 2.
0POE(20) Sorbitan monolaurate
20 Water phase component: Glycerin 10.0
Weight % Soluble Collagen (1% tL)
1o, .

Cationized Cellulose 0.1 Ethyl-Q Lapen 0.1 Methyl-Q
Laben 0.2 Fragrance 0
．． 1 Purified water Umbrella with a total of 100: Same as Example 1 **: Same as Example 1 (Production method) The above oil phase components are mixed, heated and dissolved, and kept at 70°C. - On the other hand, the aqueous phase components are heated and maintained at 70°C. The oil phase is added to this water phase and emulsified using an emulsifier. Shifreeme was prepared by cooling the emulsion to a final temperature of 30° C. using a heat exchanger and then filling the emulsion.

Example 4 Cleansing foam oil phase component: Sodium N-acyl-glutamate 25.0
Weight% Lauric Acid Zoethanolamide 3
．． 0 polyethylene glycol monostearate 3.
0 Stearic acid 1.0 Cetanol 1.0 Jojoba oil 2.0 Water phase components: Glycerin 10. O.J.
i amount % methyl no Q rapen 0
．． 3 Soluble collagen (1% liquid) 20.0 Fragrance 0.3 Purified water 10.5% cationized cellulose (total 100) ) The oil phase components are mixed, heated and dissolved, and kept at 70°C.The above water phase components are also heated and mixed in the same way, and this water phase component is added to the above oil phase components and emulsified using an emulsifier. The emulsion was cooled to a final temperature of 30''C to obtain a cleansing foam.

The cosmetics of the present invention obtained in Examples 2 to 4 all exhibited excellent skin feel improvement effects.

that's all

Claims (1)

[Scope of Claims] 1. A cosmetic comprising soluble collagen and a cationized polysaccharide having a nitrogen content of 1.5 to 2.5% by weight. 2. The cosmetic according to claim 1, wherein the content of soluble collagen is 0.001 to 0.5% by weight. 3. The cosmetic according to claim 1, wherein the amount of the cationized polysaccharide is 0.001 to 2.0% by weight.