KR20170092017A - Cosmetic composition containing keratin softning for improving shaving efficiency - Google Patents

Abstract

The present invention relates to a cosmetic composition for shaving.
The keratinizing agent included in the cosmetic composition for shaving according to the present invention softens the keratin layer on the outer wall of the hair to help hydrate the hair more easily, thereby weakening the strength of the hair and thus shaving easily.

Description

TECHNICAL FIELD The present invention relates to a cosmetic composition containing keratin for improving shaving power,

The present invention relates to a cosmetic composition for shaving improved shaving power by using a keratin softener.

In the men's cosmetics market, the market for shaving cosmetics is on the rise due to the importance of shaving and interest in skin.

Factors affecting shaving power in shaving cosmetics include lubrication that can be easily pushed by the razor blade, buffering power to prevent the razor blade from directly stimulating the skin, and strength of the hair.

Among them, soap-shaped cosmetic products for shaving (shaving foam, etc.), which give lubrication power and enhance shaving performance, have been introduced. However, the cosmetic has disadvantages that it causes a serious feeling of drying after use due to the soap ingredient. In order to overcome the above disadvantages, there is a disadvantage in that when the non-soap type product is used, the performance is not good even if the lubrication is deteriorated.

In addition, a method of improving the shaving power by weakening the strength of the hair by hydrating the hair (whisker) with water has been proposed. However, it is difficult for the hair to hydrate sufficiently in a short time due to the keratin layer on the outer wall of the hair.

1. Korean Patent Publication No. 10-2003-0046789

The present invention provides a cosmetic composition for shaving which can easily hydrate hair using a keratolytic softener to weaken the strength of the hair to thereby improve shaving power without irritation to the skin and good feeling of use and without lubrication caused by soap ingredients .

The present invention provides a cosmetic composition for facial hair including a keratin softener.

In addition, the present invention provides a shaving method comprising the step of applying the aforementioned cosmetic composition for shaving so as to a predetermined region of the skin of an individual, and shaving the skin region.

The keratinizing agent contained in the cosmetic composition for shaving according to the present invention softens the keratin layer on the outer wall of hair to help the hair to hydrate more easily and to weaken the strength of the hair. As a result, it is possible to shave easily with a small force by improving the shaving power without losing the lubricity by the soap ingredient, less irritation to the skin and feeling good.

FIG. 1 is a graph showing the results of experiments for weakening hair strength according to kinds of keratinizing agents.
2 is a graph showing the results of the customer satisfaction evaluation of the composition according to the present invention.

The present invention relates to a cosmetic composition for shaving comprising a keratin softening agent.

Hereinafter, the cosmetic composition for shaving according to the present invention will be described in more detail.

The term "cosmetic for shaving " in the present invention refers to a cosmetic which imparts lubrication when shaving and allows the razor blade to be easily pushed on the surface of skin, and has a buffering force to minimize irritation to the skin. In the present invention, it may mean that the cosmetic for shaving does not contain a soap component. The soap component may be a water-soluble salt of a fatty acid and may be represented by a soap. The fatty acid salt of the fatty acid may be a component known in the art and includes, for example, a basic substance such as triethanolamine, sodium hydroxide or potassium hydroxide and a basic substance such as stearic acid, palmitic acid, myristic acid, oleic acid, coconut oil fatty acid, And mixtures of higher fatty acids.

In the present invention, the exfoliation agent easily hydrates the hair to weaken the strength of the hair, thereby making it possible to improve the shaving power while having less irritation to the skin and feeling good to use.

In one embodiment, the hair may be a beard.

In one embodiment, the kind of the exfoliating softener is not particularly limited, and a keratin softening agent generally used in a facial cosmetic composition can be used. For example, as the keratinizing agent, urea derivatives such as urea and hydroxyphenylurea, salicylic acid, phenylhydroxy acid, sulfur, resorcin, resorcinol, alpha hydroxy acid and BHA (beta hydroxy acid ) May be used. Specifically, urea may be used as the exfoliating agent.

In one embodiment, the content of the keratin softening agent may be 1 to 15% by weight, 3 to 12% by weight, or 5 to 10% by weight based on 100% by weight of the cosmetic composition for shaving. It is possible to secure the stability of the cosmetic composition for shaving to be produced in the above content range, to minimize irritation to the skin, and to impart a superior shaving power.

In one embodiment, the cosmetic composition for shaving according to the present invention further comprises at least one additive selected from the group consisting of a skin conditioner, a detergent, a foaming agent, a moisturizer, a skin freshening agent, a sedative and a lubricant in addition to the above- can do.

The skin conditioner, detergent, foam generator, moisturizer, skin freshening agent, sedative and lubricant can be used without limitation in the components commonly used in this field.

Specifically, at least one selected from the group consisting of aloe, allantoin, panthenol, alpha-hydroxy acid, phospholipid, triglyceride, vegetable oil and amino acid can be used as the skin conditioning agent. Examples of the moisturizing agent include glycerin, sorbitol and propylene Glycol, and the like.

In one embodiment, the cosmetic cosmetic composition according to the present invention can be prepared in the form of a simple aqueous solution which can be applied to the face prior to shaving. Preferably, the composition may be in the form of a cream, lotion, gel, liquid (liquid) or mousse type.

The cosmetic composition for shaving according to the present invention can be easily manufactured by a general manufacturing method in this field according to the formulation.

The present invention also relates to a shaving method comprising applying the shaving cosmetic composition described above to a predetermined area of an individual's skin and shaving the skin area.

The cosmetic composition for shaving can be a cream, a lotion, a gel, a liquid (liquid) or a mousse type.

Hereinafter, embodiments of the present invention will be described in detail to facilitate understanding of the present invention. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the following embodiments. Embodiments of the invention are provided to more fully describe the present invention to those skilled in the art.

Example

Production Examples 1 to 3

A composition for shaving having a composition (wt%, wt%) as shown in Table 1 below was prepared.

Production Example 1 Production Example 2 Production Example 3 Urea 10 5 3 Purified water To 100

Comparative-Preparation Example 1

No shaving composition was used.

Comparative Example 2

Purified water was used in place of the shaving composition.

Comparative-Preparation Example 3

A shading composition was prepared in the same manner as in Preparation Example 1, except that glutathione was used in an amount of 1% by weight instead of urea.

Experimental Example 1. Experimental study on weakening of hair strength according to keratolytic agent

The tensile strength of the hair was compared to compare the effect of weakening the hair strength of the shaving composition prepared in the Production Example.

A sample of 20 hairs (hair) was prepared and 30 samples per each experiment were measured. The samples were applied to the hair for 10 minutes and then measured.

The strength was calculated by dividing the maximum strength until the hair was broken by the area of the hair.

The measurement results are shown in FIG. 1 and Table 2.

Tensile strength (10 ⁶ gmf / um ² ) Comparative-Preparation Example 1 9482.709 Comparative Example 2 7646.793 Production Example 1 6791.626 Production Example 2 7101.372 Production Example 3 7303.56

As shown in Fig. 1 and Table 2, the production examples in which the keratinizing agent was treated with hair were compared with those of normal hair (Comparative-Preparation Example 1) and hair treated with purified water (Comparative-Preparation Example 2) , It can be confirmed that the strength of the hair is reduced.

Particularly, Production Example 1, which was treated with 10% by weight of urea, showed a decrease of about 28% in strength compared with that of normal hair (Comparative-Production Example 1) % Strength reduction effect

 The strength reduction effect of urea was found to decrease in proportion to the content of urea.

Example 2. Increase of cross-sectional area according to content of keratinizing agent

The hair was wetted to the compositions prepared in Preparative Examples 1 to 3 and Comparative-Preparative Examples 1 to 3 for 10 minutes, and the cross-sectional area increase rate was confirmed by comparing the cross-sectional area before treatment.

Since it is known that the rate of increase in cross-sectional area is generally proportional to the degree of hydration of hair, in the present invention, the rate of increase in cross-sectional area was tested to compare the degree of hydration of hair. The rate of increase was calculated as the average value of 30 hair samples by calculating how much the hair cross-sectional area increased after treatment with the composition according to the preparation example and the comparison-preparation example, in comparison with each of the existing hair.

The experimental results are shown in Table 3.

Cross-sectional area increase rate (%) Comparative-Preparation Example 1 - Comparative Example 2 8.281538144 Production Example 1 16.05666426 Production Example 2 12.47279472 Production Example 3 11.87463134 Comparative-Preparation Example 3 9.353348158

As shown in Table 3, the cross-sectional area after impregnation in purified water (Comparative-Preparation Example 2) for 10 minutes was about 8% larger than that before impregnation. In the case of 10% by weight of urea (Production Example 1) , 5% by weight of urea (Preparation Example 2), and 12% by treatment.

That is, the increase rate of the cross-sectional area is proportional to the content of urea, and it can be confirmed that the degree of hydration of the hair increases with the urea content.

(Comparative-Preparation Example 3) treated with a reducing agent acting on the inside of the hair to weaken the hair, not acting to weaken the outer wall keratin layer of the hair, I did not. That is, it is understood that keratin softener weakens the keratin layer, which is deeply involved in hydration degree.

Comparative Example 1

A cleansing foam type cosmetic composition for shaving has a composition (wt%, wt%) shown in Table 4 below.

Specifically, a cosmetic composition for shaving was prepared according to the following method.

1. Part A and Part B are weighed and dispersed with a disper and evenly dispersed at 70 ° C.

2. Mix parts A and B with stirring.

3. Add Part C to the mixture prepared in 2 and mix evenly and evenly.

4. Cool and defoam to 30 ℃.

Raw material name Comparative Example 1 Parte Stearic acid 6 Myristic acid 24 Laurick Acid 4 Glyceryl stearate 1.5 FAGE -100 stearate 1.5 Hydrogenated polydecene One PIGGY-40 Hydrogenated Castor Oil One Part B Purified water To 100 When tetrasodium is added to the dithia 0.05 glycerin 10 Propylene glycol 7 Potassium hydroxide 7.6 Part C Spices Suitable amount

Example 1 and Comparative Examples 2 to 3

A cream type cosmetic composition for shaving has a composition (wt%, wt%) shown in Table 5 below.

The cosmetic composition for shaving was prepared according to the manufacturing method of Comparative Example 4.

Raw material name Comparative Example 2 Example 1 Comparative Example 3 Parte Purified water To 100 To 100 To 100 glycerin 5 5 5 Urea 0 5 20 Part B Cetearyl alcohol One One One Stearic acid One One One Glyceryl stearate 2 2 2 FAGE -100 stearate One One One Hexyldecyl hexanoate 5 5 5 Polysorbate 60 One One One PHY-9M 0.05 0.05 0.05 Part C Tromethamine 0.5 0.5 0.5 Spices Suitable amount Suitable amount Suitable amount

Experimental Example 3. Evaluation of Customer Satisfaction

We conducted a consumer survey on shaving power, post - shake stimulation, feeling after use after shaving, and overall satisfaction of 30 adult men in their 20s and 40s.

The criteria for shaving power, post-shaking stimulus, feeling after use, and overall satisfaction were rated as excellent 5 points, good 4 points, average 3 points, poor 2 points, and very poor 1 point.

The results of the investigation are shown in FIG. 2 and Table 6.

Shaving power After shaving Feeling after shaving Overall satisfaction Comparative Example 1 4.8 3.62 3.74 4.42 Example 1 4.32 4.68 4.58 4.53 Comparative Example 2 3.75 4.63 4.48 4.21 Comparative Example 3 4.64 3.82 4.3 4.26

The formulation stability was evaluated and is shown in Table 7 below.

The stability of the formulation was evaluated by sensory evaluation of the shape, color change and separation of the formulation.

Comparative Example 1 Example 1 Comparative Example 2 Comparative Example 3 Formulation stability stability stability stability Instability

As shown in Tables 6 and 7, a general cleansing foam type shaving product (Comparative Example 1) has excellent shaving power due to lubrication, but there is a tendency that the soap ingredient causes skin dryness and irritation after shaving .

In order to overcome this, it can be seen that shaving with a general cream type product (Comparative Example 2) that does not contain a soap component has no irritation after use and excellent feeling in use, but shaving power is remarkably reduced and overall satisfaction is also low.

Example 1 in which 5% by weight of urea, which is an exfoliating emollient, is applied to a general cream type formulation has no shaking after shaving, has excellent feeling of use, and has a shaving power of a certain level or more.

However, when 50% by weight of urea was applied (Comparative Example 3), the irritation was high and the stability of the formulation was unstable.

Therefore, it can be confirmed that the content of the exfoliating softener is maintained at 1 to 15% by weight, which makes it possible to produce a cosmetic composition for shaving with excellent formulation stability and feeling.

Claims (6)

A cosmetic composition for shaving comprising a keratin softener.
The method according to claim 1,
The exfoliating softener may be at least one selected from the group consisting of urea, hydroxyethanol, salicylic acid, phenylhydroxy acid, sulfur, resorcin, resorcinol, alpha hydroxy acid and BHA ≪ / RTI >
The method according to claim 1,
Wherein the keratin softening agent is contained in an amount of 1 to 15% by weight based on 100% by weight of the cosmetic composition for shaving.
The method according to claim 1,
Wherein the cosmetic composition further comprises at least one additive selected from the group consisting of a skin conditioner, a detergent, a foaming agent, a moisturizer, a skin freshening agent, a sedative and a lubricant.
The method according to claim 1,
A cosmetic composition for shaving a cosmetic composition for shaving is a cream, lotion, gel, liquid (liquid) or mousse type.
A shaving method comprising applying the shaving cosmetic composition according to claim 1 to a predetermined area of an individual's skin and shaving the skin area.

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