KR101147555B1 - Cosmetic composition for exfoliating skin keratin - Google Patents

Abstract

The present invention relates to a cosmetic composition comprising a carbonate and an alpha hydroxy acid, more specifically, an agent containing a carbonate such as sodium bicarbonate; And it relates to a cosmetic composition consisting of two agents containing alpha hydroxy acid, such as lactic acid.

In the present invention, the first and second agents are sequentially applied to the skin to provide an effective cosmetic composition for promoting effective exfoliation of skin and controlling skin turnover cycle through a peeling process by a scrub effect and a chemical reaction.

Carbonates, exfoliation, alpha hydroxy acids, cosmetics

Description

Cosmetic composition for exfoliating skin {Cosmetic composition for exfoliating skin keratin}

The present invention adds a chemical reaction and chemical peeling effect through the addition of acid to the physical effect of the carbonate (scrubbing effect), thereby quickly and effectively removing only the outermost layer of the skin, ie, the stratum corneum, without damaging the skin. The present invention relates to a cosmetic composition having an effect of adjusting and promoting the exfoliation of the skin.

The stratum corneum is the outermost layer in direct contact with the outside, protecting the skin and the body from physical and chemical hazards. The composition of the stratum corneum consists of protein, fat, water-soluble substances and water called keratin. As skin cells continue to be produced, existing skin cells gradually rise to the stratum corneum, and the cells that reach the stratum corneum are flat dead cells called 'keratomas', where millions of dead keratinocytes fall off the skin each day and new keratinocytes are released. Turn over occurs. Originally, the skin naturally forms this turn over cycle, but as it ages, or due to external conditions such as UV or stress, the skin does not fall off naturally. Therefore, by removing the dead skin cells by an artificial method called peeling, the regeneration cycle of the blocked skin can be restored, and the fresh cells generated from the bottom can be pulled upward to maintain a clear and clean skin.

(1) Physical Peeling

Physical peeling is a representative 'scrubbing agent' that removes dead skin by rubbing various types of granules with the skin. It is important to choose a product that is suitable for skin sensitivity because it is physically irritating depending on the skin type and condition.

(2) Chemical Peeling

Chemical peeling is an acid (Acid) component is known to be the fastest way to see the effect. The principle of chemical peeling is to loosen the stratum corneum of the thick stratum corneum on the skin by the action of acid to soften excess keratin that did not fall off in time, helping to remove it through cleansing. Chemical peeling is also widely used in dermatological dermabrasion.

When home peeling, it is important to review the type and content of acid used and to select a suitable product for your skin. In addition, artificially removes the dead skin cells, temporarily reducing the amount of keratin may be a weak skin protection against the external environment. Therefore, after using peeling products, it is recommended to use sunscreen or other products that help to moisturize and protect the skin.

Looking at the acid (Acid) mainly used for chemical peeling is as follows.

① AHA (alpha hydroxy acid)

AHA is the most representative chemical peeling component, and helps to remove the link between the keratin layer in the stratum corneum by the action of acid, and has the effect of softening the keratin. Specifically, the components corresponding to AHA are as follows.

-Glycolic acid: Represents AHA and is the most frequently used ingredient in cosmetics. It has the smallest molecular weight and has excellent skin penetration and exfoliating ability.

Lactic acid: Lactic acid, which is one of the natural moisturizing factors (NMF) on the surface of our skin, is the most widely used cosmetic product after glycolic acid. Extracted from spicy milk and tomato juice, it is also used in peeling products.

Others include malic acid from apples, citric acid from oranges and oranges, and tartaric acid from wine.

② BHA (Beta Hydroxy Acid)

BHA, like AHA, is one of the representative chemical peeling ingredients, and the most visible BHA ingredients in cosmetics include salicylic acid. Unlike AHA, since BHA is fat-soluble, it effectively removes the areas where excess keratin is accumulated on acne, so it is easily used to acne-prone skin. Such chemical peeling agents can show excellent efficacy in a short period of time, but have the disadvantage that skin irritation is likely to occur and the effect does not last long.

If the stratum corneum does not peel off normally and remains on the surface of the skin, the stratum corneum becomes thicker and the face looks dull and dark. In addition, impurities remaining on the skin surface and hair follicles are oxidized or decomposed by oxygen or microorganisms, which causes skin problems such as inflammation. The main component of these impurities is keratin, which remains on the surface of the skin after the cell dies, and the proteins in the sweat remain on the surface after sweating. Although keratin has a high molecular weight, insoluble, and does not decompose easily, it is not easily removed by the cleaning agent alone, but can be effectively removed by combining physical peeling with chemical peeling, and as a result, the keratin layer attached to the skin surface is removed to make the skin softer. You can get it done.

However, for more effective peeling, excessively increasing the content of acid or using a scrub with severe skin irritation is rather limited because it may have a detrimental effect on skin irritation and skin health.

Accordingly, the present inventors have developed through the sequential application of the second agent containing alpha hydroxy acid and the physical peeling of the first agent including carbonate to obtain a method that can give an instant peeling effect while maintaining skin stability. Invented a cosmetic composition using the exothermic reaction and chemical peeling.

The present invention relates to a cosmetic composition having the effect of controlling the skin turnover cycle and promoting exfoliation of the skin. More specifically, the present invention is composed of one agent of a scrub formulation containing a carbonate such as sodium bicarbonate, two agents of a liquid type containing an alpha hydroxy acid such as lactic acid and the skin keratin through a two-step peeling process. A composition that effectively promotes peeling off.

After applying 1 carbonate containing carbonate to the skin and physically peeling for 1 ~ 2 minutes, apply 2 rolls containing alpha hydroxy acid to roll, and the carbonate scrub applied to the skin shows an instant exothermic reaction and dissolves. At the same time, it is generated as a foam, and the rolling feeling is softened.

As a specific method, rub 1 ~ 2 minutes after applying 1 agent, apply 2 agent on it, spread it for 1 ~ 2 minutes, and wash off with water.

The alpha hydroxy acid used in the present invention includes glycolic acid, lactic acid, malic acid, gluconic acid, citric acid, tartaric acid, malic acid, and the like, and preferably lactic acid is used.

In the present invention, the first carbonate, which is a physical peeling step used to physically remove dead skin remaining in the outermost layer of skin, includes ammonium bicarbonate, ammonium carbonate, calcium carbonate, magnesium carbonate, potassium bicarbonate, potassium carbonate, sodium bi Carbonate, sodium carbonate, zinc carbonate can be used and 1.0 to 90.0% by weight, preferably 10.0 to 60.0% by weight based on the total weight of the cosmetic composition. If the content of carbonate is less than 1.0% by weight it is difficult to expect the scrub effect, when containing more than 90.0% by weight is difficult to formulate.

In the present invention, the alpha hydroxy acid of the second agent which dissolves the carbonate remaining on the skin after the use of the first agent through a chemical reaction and performs chemical peeling is used in an amount of 0.1 to 70.0% by weight based on the total weight of the cosmetic composition, preferably Is used in an amount of 1.0 to 10.0% by weight. Alpha hydroxy acid

If the amount of alpha hydroxy acid is less than 0.1% by weight, the effect generated by reacting with carbonate is low and it is difficult to expect a chemical peeling effect. If it contains more than 70.0% by weight, there is a risk of skin irritation and skin safety, and it is difficult to formulate.

Sodium bicarbonate reacts with acid and proceeds to the following mechanism, and bubbles form with exothermic reaction.

NaHCO ₃ + R-CO ₂ H -----> RCO ₂ Na + H ₂ CO ₃

The cosmetic composition for exfoliating the skin according to the present invention adjusts the skin turnover cycle by reducing the angular mass of the outermost layer of the skin and removes it mildly, and promotes exfoliation of the skin to make the skin clean and smooth.

Example : Table 1 and the composition was prepared as follows.

In the preparation process of the first agent, PEG-8, Glyceryl stearate SE, Silica, Glycerin, and purified water were added and heated and dissolved up to 75 ℃, followed by emulsification by adding Ethylhexyl palmitate, cooling to 40 ℃, and adding / stirring sodium bicarbonate. After defoaming and cooling.

In the preparation process of the second agent, stir / dissolve by adding purified water and P.G, and then mix by adding Lactic acid and Glycolic acid.

Experimental Example : Evaluation of keratin improvement in the outermost skin layer

In order to evaluate the keratin improving effect of the first agent containing sodium bicarbonate and the second agent containing alpha hydroxy acid of the present invention, the first agent and the second agent were prepared as in Example, respectively, for healthy men and women in their 20s to 30s. Twenty subjects were tested. In the test method, after cleansing, the keratin of the subject's cheek-maxillary area is collected using keratin tape, spread the first agent on the same area, rub for 1 minute, the second agent, massage for 1 minute, and then wash the keratin again By collecting and comparing the angular mass before and after use through Charm view (MORITEX) was determined the effect of keratin improvement of the composition and the results are shown in Table 2.

The above figures compare the angular mass before peeling with the absolute value after peeling. For example, if the angular mass was 200 before peeling, and 30 were left after peeling, a 170% reduction was achieved.

Evaluation of keratin improvement effect of the first agent containing sodium bicarbonate and the second agent containing alpha hydroxy acid, which is a characteristic of the present invention, showed a very excellent effect immediately as shown in Table 2 despite the short use time. . In the case of men who were relatively neglected to manage keratin, the amount of keratin reduction was relatively higher than that of women.

In addition, as a result of sensory evaluation on the exfoliation effect and stimulation degree by 20 consumers, the results were generally satisfied with the exfoliation effect and the satisfaction with the stimulus was also excellent.

Five points of satisfaction (excellent exfoliation effect, no irritation) were evaluated as 5 points, and those with low satisfaction (no exfoliation effect, strong stimulation) were evaluated as 1 point.

1 is a Charm view (X 700) image corresponding to the subject L of the evaluation results of the keratin improvement of the outermost layer of the skin proceeded with the composition prepared in the composition of Table 1. (149% angular mass)

FIG. 2 is a Charm view (X 50) photograph corresponding to test subject H among the results of evaluation of keratin improvement of the outermost skin layer of the composition prepared by the composition of Table 1. FIG.

(92% reduction in angular mass)

Claims (5)

Glucolic acid and lactic acid Skin composed of two liquids containing at least one alpha hydroxy acid selected from malic acid, gluconic acid, citric acid, tartaric acid and malic acid, wherein the first and second agents are sequentially applied. Cosmetic composition for exfoliation. delete delete The cosmetic composition according to claim 1, wherein the alpha hydroxy acid is lactic acid. 5. The carbonate according to claim 1, wherein the carbonate contains 10.0 to 60.0 wt% based on the total weight of the cosmetic composition, and the alpha hydroxy acid contains 0.1 to 10.0 wt% based on the total weight of the cosmetic composition. Cosmetic composition.

Images