KR960012607B1 - Cosmetic composition for dryness prevention of skin - Google Patents

Abstract

The moisturizing cosmetics contain 0.5-20.0wt.% glycosaminoglycane which extracted from the mucus of snail. The glycosaminoglycane is the mixture of mucopolysaccharide and is much contained in the mucus of snail. Also the addition of 0.5-10wt.% cholesteryl ester makes the water holding capacity of the moisturizing cosmetics more greater. The moisturizing cosmetics contains one or more of 0.01-3.0wt% intercellular lipid selected from ceramide, cerebroside, spingomyelin, ganglioside or lecithin.

Description

Skin moisturizing cosmetic composition

The present invention relates to a moisturizing cosmetic composition for preventing skin drying, and more particularly, to a moisturizing cosmetic composition for preventing skin drying containing glycosaminoglycans extracted from slime of a snail.

Dermatologically, the most important role of the skin is to function as a barrier to prevent the loss of biological components such as water and electrolytes and to prevent the invasion of harmful substances into the skin.

In other words, the skin plays an important role as a barrier to protect the living body from the external environment while being exposed to a much drier external environment than the living body. In particular, the stratum corneum of the skin's outermost layer, which is in direct contact with the external environment, prevents the invasion of mechanically and chemically harmful components, prevents the loss of internal moisture in the dry environment than the body, and at the same time, the stratum corneum itself has adequate moisture. To maintain flexibility.

Skin moisture is about 70% in the dermis, but decreases to the epidermis, about 10-30% in the outermost stratum corneum. The water supplied from the dermis is mainly diffused up the stratum corneum by passive volcanoes and lost to the outside. This is called Trans Epidermal Water Loss (TEWL), and it is known that it prevents the loss of transdermal moisture, and it is known that it is sebum component and epidermal lipid which are the lipid membrane components of the stratum corneum.

The stratum corneum retaining ability is not only important in terms of biological defense, but also smooth and flexible skin surface is a very important function from a cosmetic point of view. Therefore, various components in the stratum corneum are involved in exhibiting this function.

However, despite this function of the skin, the skin is aging with the harsh external environment, such as wind, cold weather, sunlight, face wash, shaving, etc., and easily loses moisture, making it easy to dry and rough skin.

Therefore, it is the most important purpose of using cosmetics to prevent such a phenomenon to maintain a smooth and moist skin. In other words, applying cosmetics to the skin creates an artificial membrane on the skin to prevent external irritation and to prevent water loss from inside the skin, and to supply a certain amount of moisture to the skin.

However, as a conventional cosmetics having a general moisturizing action, it is not easy to have a smooth skin care that is smooth and moist and has no burden on the skin. That is, moisturizing agents such as water-soluble polyhydric alcohols, sodium pyridonecarboxylic acid sodium, urea, amino acids, elastin, and the like, which have been used in conventional moisturizing creams or lotions, have problems.

In view of these problems, in the case of water-soluble polyhydric alcohols which are most often used as moisturizers in conventional cosmetics, glycerol and sorbitol having three or more OH groups are very sticky in contrast to excellent moisturizing power, and make them feel uncomfortable when used. Glycol, 1,3-butylene glycol, etc. will have skin side effects when used in large amounts. In addition, sodium pyrrolidone carboxylate (PCA-Na), sodium lactate (Na-Lactate), and urea, which are natural moisturizing factors (NMF), have strong electrolytic properties and have a problem of impairing emulsion stability.Amino acids, collagen, Elastin and the like also have a moisturizing ability, but the moisturizing ability was limited.

Accordingly, the present inventors formulated dozens of raw materials related to skin moisturizing to find a moisturizing agent having excellent moisturizing ability without the above problems, and as a result of repeated experiments, the moisturizing ability is excellent, improving moisture retention ability, effectively preventing transdermal moisture loss. At the same time, it was found that the substance that can solve the above problems is glycosaminoglycane extracted from the mucus of the snail.

The sticky mucus of snails is designed to maintain life even when the skin is moist and moist, even in dry weather. Glycosaminoglycans are extracted from the mucus tissue of fresh snails.

Glycosaminoglycans are present in most animals as a mixture of mucopolysaccharides, but in very small amounts and in large amounts in the mucus of snails.

Hereinafter, the present invention will be described in detail.

In the manufacture of a moisturizing cosmetic for preventing skin drying, the content of glycosaminoglycans extracted from the mucus of the snail as a moisturizing agent is 0.5-20.0 parts by weight, preferably 1.0-10.0 parts by weight. At 0.5 parts by weight or less, it is difficult to expect a water retention capacity, and at 20.0 parts by weight or more, the product is heavy and uneconomical.

In addition, according to the present invention, when used in combination with a highly moisturizing cholesteryl ester (Cholesteryl Ester) is much better moisture retention.

Cholesteryl ester means that one kind of hydroxy fatty acid or N-acyl glutamic acid having 12 to 20 carbon atoms in cholesterol is composed of ester bond, and catching ability can hold 4 times more water than its own It has a capacity.

The content of cholesteryl ester is 0.5-10.0 parts by weight. At 0.5 parts by weight or less, it is difficult to expect the catcher's ability, and at 10.0 parts by weight or more, it adversely affects the feeling of use. As described above, by using a combination of glycosaminoglycans and cholesteryl esters extracted from the slime of the snail within the above contents, the moisture retention ability is better and the transdermal moisture loss is prevented to the maximum, and there is no stickiness. It is possible to prepare a moisturizing cosmetic for preventing skin dryness of the feeling, so that it is always moist while using and maintains smooth skin.

In addition, in the present invention, at least one selected from among ceramides, cerebromide, sphingomyelin, ganglioside, and lacithin, which are intercellular lipid components, is used as a means of reinforcing the lipid membrane of the skin as an auxiliary component. The use of intercellular lipid components is preferably 0.01-3.0 parts by weight, it is difficult to expect the effect below 0.01 parts by weight, difficult to dissolve at 3.0 parts by weight or more, and participates in the interface of the emulsifier, resulting in fluidity of the product. And adversely affect stability.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

Example

In order to determine the skin moisture retention capacity, skin moisture evaporation inhibitory ability, usability and the like of the cosmetic composition prepared by the Examples and Comparative Examples, the following test was carried out.

On the other hand, pigments, preservatives, water-soluble polymers, nonionic surfactants, chemicals, higher fatty alcohols and oils and fats contained in the examples of the present invention are raw materials widely used in conventional cosmetics within a range that does not affect the effect claimed in the present invention. And the content was used.

Example 1-6, Comparative Example 1-12

Moisture retention test for moisturizing substances

Next, the cosmetic composition was prepared according to Examples 1-6 and Comparative Examples 1-12 by applying the respective moisturizing enhancing substances to the basic prescription as shown in Table 1 below.

In the manufacturing method, the aqueous phase component and the oil phase component were warmed to dissolve well, and then the oil phase component and the neutralizing agent were slowly added to the aqueous phase component, stirred vigorously, and cooled.

Skin after applying the cosmetic composition prepared according to Example 1-6 and Comparative Example 1-12 to the skin as a means for evaluating the moisturizing power of the cosmetic composition prepared according to Examples 1-6 and Comparative Examples 1-12. The method of evaluating skin moisture retention ability by measuring the electrical conductivity of was used.

In the test method, the cosmetic composition prepared according to Example 1-6 and Comparative Example 1-12 was applied at a constant temperature and humidity room of 22 ° C. and 45% relative humidity to a predetermined amount (0.03 g / 16 cm 2) on the inside of each of the 20 subjects. After rubbing well, the moisture content of the skin was measured 2 hours after application.

As a measuring device, a skin moisture content measuring device (Skicon 200) measuring electrical conductivity of skin was used.

TABLE 1

Basic prescription

TABLE 2

★ Glycosaminoglycans Extracted from Snail Mucus

As shown in Table 2, Examples 1-16 based on the present invention showed much higher skin conductivity after 2 hours of application than Comparative Examples, and thus, Examples 1-6 had much higher interpolation moisture retention capacity. It can be seen that it is excellent. In addition, since Example 4-6 has better water retention than Example 1-3, when the cholesteryl ester is used in combination with the glycosaminoglycan extracted from the snail mucus, the moisturizing power of the product is more advantageous.

Example 7

Next, the oil phase component and the water phase component were heated and dissolved in the composition as shown in Table 3, and then the oil phase component was slowly added to the water phase component, stirred vigorously, and cooled to prepare a moisturizer cream.

TABLE 3

Moisture Cream

Example 8

Next, the oil phase component and the aqueous phase component were heated and dissolved in the composition as shown in Table 4, and then the oil phase component and triethanolamine were slowly added to the aqueous phase component, stirred vigorously, and cooled to prepare a milk crocushion.

TABLE 4

Milk Croissant

Comparative Example 13

Next, the oil phase component and the aqueous phase component were heated and dissolved in the composition as shown in Table 5, and then the oil phase component was slowly added to the aqueous phase component, stirred vigorously, and cooled to prepare a moisturizing cream.

TABLE 5

Moisture Cream

Comparative Example 14

Next, the oil phase component and the aqueous phase component were dissolved in the composition as shown in Table 6, and then triethanolamine was slowly added to the aqueous component, followed by vigorous stirring, followed by cooling, thereby preparing milk croshon.

TABLE 6

Milk croissant

Moisture retention test

In order to evaluate the moisturizing power of the cosmetic composition prepared according to Examples 7,8 and Comparative Examples 13 and 14, a water retention test was conducted.

The cosmetic composition prepared according to Example 7,8 and Comparative Examples 13 and 14 in a constant temperature and humidity room of 22 ° C. and a relative humidity of 45% was coated with a predetermined amount (0.03 / 16 cm 2) on the underside of 20 subjects, respectively, and rubbed well. Then, the moisture content of the skin was measured 1 hour after application and 2 hours after application.

TABLE 7

As shown in Table 7, the cosmetic composition prepared according to Example 7,8 showed much higher electrical conductivity of the skin after 1 hour and 2 hours than the cosmetic composition prepared according to 13,14.

That is, it was found that the moisture retention ability of the composition prepared according to Example 7,8 was much better than the cosmetic composition prepared according to Comparative Examples 13 and 14.

Water evaporation test

In order to evaluate the moisturizing power of the cosmetic composition prepared according to Examples 7,8 and Comparative Examples 13,14, it was judged by performing a moisture evaporation test.

After applying a certain amount of the cosmetic composition prepared according to Example 7,8 and Comparative Examples 13,14 in a constant temperature and humidity room of 22 ° C. and a relative humidity of 45%, respectively, after rubbing well, 10 minutes at 10 minutes intervals The water evaporation amount of the skin was measured using the water evaporator for a minute.

TABLE 8

As shown in Table 8, the cosmetic composition prepared according to Examples 7,8 showed much less water evaporation than the cosmetic composition prepared according to Comparative Examples 13 and 14.

That is, it can be seen that the moisture evaporation inhibiting ability of the skin of the cosmetic composition prepared according to Examples 13 and 14 is much superior to the cosmetic composition prepared according to Comparative Examples 7,8.

Usability Experiment

It was carried out to evaluate the usability of the cosmetic composition prepared according to Examples 7,8 and Comparative Examples 13,14.

The cosmetic compositions prepared according to Examples 7,8 and Comparative Examples 13 and 14 were commissioned to 10 professional hairdressers to evaluate their usability as stickiness.

TABLE 9

(Evaluation standard)

◎: No stickiness.

(Circle): Although it is slightly sticky, it is hard to feel well.

(Triangle | delta): There is stickiness.

X: Stickiness is severe.

As shown in Table 9, the cosmetic composition prepared according to Examples 7,8 according to the present invention was almost non-sticky, whereas the cosmetic composition prepared according to Comparative Examples 13 and 14 was determined to be very sticky.

As described above, the cosmetic composition prepared according to Examples 7 and 8 has much better moisture retention and skin moisture evaporation inhibiting ability than the cosmetic composition prepared according to Comparative Examples 13 and 14. When the cosmetic composition prepared according to Comparative Examples 13 and 14 is very sticky, while the cosmetic composition prepared according to Example 7,8 is almost non-sticky, the cosmetic composition prepared according to the present invention has excellent moisturizing ability and usability. It is determined that may be good.

Claims (5)

Glycosaminoglycan extracted from the snail mucosa 0.5-20.0 parts by weight, characterized in that it contains a moisturizing cosmetic composition for preventing skin drying. The method of claim 1, wherein 0.5-20.0 parts by weight of glycosaminoglycans and 0.5-10.0 parts by weight of cholesteryl ester, characterized in that the composition for preventing skin drying. The method of claim 1, wherein the glycosaminoglycans 1.0-10.0 parts by weight of the skin drying prevention moisturizing cosmetic composition, characterized in that it contains. The method of claim 2, wherein the cholesteryl ester is a skin drying prevention moisturizing cosmetic composition, characterized in that consisting of an ester bond of hydroxy fatty acid or N-acyl glutamic acid having 2 to 20 carbon atoms. The method according to any one of claims 1 to 4, characterized in that 0.01 to 3.0 parts by weight of one or two or more of ceramide, cerebromide, pingomierine, ganglioside, and lecithin, which are intercellular lipids, are contained. Skin moisturizing cosmetic composition.