KR101534342B1 - Scalp-care Composition for Enhanced Scalp-Safety and anti-dandruff effect - Google Patents

Abstract

The present invention relates to an anti-dandruff hair cosmetic composition having improved scalp stability and anti-dandruff properties, and more particularly, to a hair cosmetic composition for anti-dandruff which contains zinc-pyrithione and black- The anti-dandruff hair cosmetic composition of the present invention can be expected to have an improved anti-dandruff effect due to improved safety against the scalp.

Zinc pyricion, black pearl extract, antidandruff

Description

[0001] The present invention relates to an anti-dandruff hair cosmetic composition,

The present invention relates to an anti-dandruff hair cosmetic composition having improved scalp stability and anti-dandruff properties, and more particularly, to a hair cosmetic composition for anti-dandruff which contains zinc-pyrithione and black- will be.

There are many people who worry about itching, dandruff and alopecia due to increased stress, air and water pollution. Some consumers who use traditional soap or hair shampoo to clean their hair and scalp have a growing number of people with scalp troubles such as itching and dandruff caused by product use. One of the trials is to add shampoo products such as anti-dandruff, anti-bacterial, anti-irritant and anti-itch ingredients. Or various products used before or after shampooing are being studied.

However, itching and dandruff are not necessarily symptoms of the same cause. People with dandruff are almost always itchy, but itching does not necessarily mean dandruff symptoms,

Dandruff can be divided into common dandruff, mild dandruff, psoriasis with scurfy separation, seborrheic-dandruff with excessive sebum secretion and accumulation of scurvy on the scalp These itching and dandruff are caused by internal and external factors of the body. Topical treatment such as anti dandruff drugs, quasi drugs, and cosmetics is used to escape from itching and dandruff caused by these factors.

Examples of dandruff materials known so far include Tar, Zinc-Pyrithione, Pirotone olamine, Sulfur, SeS 2, Climbazole, Salicylic acid, Camphor, Menthol, Captain, Allantoin, and Corticosteroids.

Zinc-Pyrithione has zinc (Zn) bonds with two sulfur atoms and two coordination bonds with oxygen (O) atoms and two extra coordination bonds have. Zinc pyrithione (ZNP) is a white solid particle with a specific gravity of 1.782 at 25 ° C with a very high specific gravity and neutral at pH of 7.3 in 5% aqueous solution.

In U.S. Patent Nos. 3,636,213, 3,785,985, and 3,940,482, zinc pyrithione shows poor solubility in water or a solvent because it contains zinc as a heavy metal, and thus can form a covalent bond with zinc A zinc pyrithione aqueous solution was prepared by using amines such as diethanolamine, EDTA (ethylenediaminetetraacetic acid) as a ligand.

Accordingly, the inventors of the present invention found that, while studying to improve the scalp safety of the anti-dandruff shampoo, it is possible to improve the safety of the scalp and further enhance anti-dandruff power by prescribing the extract of the black pearl juice to zinc pyrithione Thereby completing the present invention.

An object of the present invention is to provide an anti-dandruff hair cosmetic composition having improved scalp safety and anti-dandruff properties, and more particularly, to an anti-dandruff hair cosmetic composition comprising zinc-pyrithione and a black pearl extract as an active ingredient To provide an anti-dandruff hair cosmetic composition that provides improved safety to the scalp and improved dandruff prevention effect.

In order to achieve the above object, the present invention provides an anti-dandruff hair cosmetic composition containing zinc pyridinium and black bean extract and having improved scalp safety and anti-dandruff properties.

 In addition, the present invention further includes a triester wax having glyceryl introduced therein in order to solve the problem of inhibiting the stability of zinc pyrithione, which may occur in a low pH range of zinc pyrite-on, thereby improving the stability of zinc pyrocite The present invention provides a hair cosmetic composition for anti-dandruff treatment.

Hereinafter, the present invention will be described in more detail.

The present invention relates to an anti-dandruff composition containing a zinc pyrite-on and a black core extract. Further, the present invention relates to a composition which further improves the stability of zinc pyrithione in a weakly acidic composition by introducing a triester wax into which glyceryl is introduced.

Zinc pyrithione used in the present invention is a kind of antimicrobial agent having an antifungal effect that inhibits the growth of stomach bacteria and is represented by the following formula 1:

[Chemical Formula 1]

This ingredient is added to most products such as creams and gels as well as shampoos, conditioners and conditioners that eliminate dandruff and scalp itching currently on the market.

In the present invention, it is preferable that zinc pyrithione is contained in an amount of 0.01 to 2% by weight based on the total weight of the composition for the purpose of preventing dandruff. When the content of zinc pyrithione is less than 0.01% by weight, If it exceeds 2% by weight, there is a problem in formulation stability.

In the present invention, citric acid (citric acid) is used to adjust the pH to be slightly acidic. In addition to citric acid, organic acids such as acetic acid, lactic acid, aspartic acid and stearic acid may be used.

The black pearl extract used in the hair cosmetic composition according to one embodiment of the present invention is a natural pearl extract obtained from a black papule. The brown pear extract is distributed in the Indian Ocean or an equatorial region of the Pacific Ocean, and in Okinawa, Japan. Tahiti, Fiji, etc. Micronesia and Polynesia are famous as Darsan, and others can be found in Panama, Egypt and Madagascar.

In the hair cosmetic composition according to one embodiment of the present invention, the black pearl shell and the black pearl are made into a fine powder, and the acid is added to the resulting mixture for demineralization, filtration and washing with water to obtain conchiolin. The conchiolin is again hydrolyzed by acid addition, followed by desalting and discoloration purification by ion exchange resin to finally obtain a black pearl extract.

The black pear extract of the present invention may be contained in an amount of 0.01 to 10.0% by weight based on the total weight of the whole composition. This is because if the content of the extract is more than 10.0% by weight, the stability of the formulation and the feeling of use may be impaired. If the content is less than 0.01% by weight, the effect is insufficient.

The triester wax having the glyceryl group introduced in the present invention is further used as trihydroxystearin for improving the stability of zinc pyrithione in the present composition and represented by the following formula (2).

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Trihydroxystearin is generally used as a skin conditioning material or as a viscosity-forming material, but in addition to this purpose, the composition is used to improve the stability of zinc pyrithione at low pH.

In the present invention, for the purpose of stabilization of the zinc pyrithione, it is preferable that it is contained in an amount of 0.01 to 5% by weight based on the total weight of the composition. More preferably from 0.1 to 1% by weight. When the content of trihydroxystearin is less than 0.01% by weight, the effect of stability is weak. When the content of trihydroxystearin is more than 5% by weight, the feeling of use is inhibited.

 The trihydroxystearin enables stable dispersion of the anti-dandruff ingredient even at a weakly acidic pH, thereby improving both the safety of the scalp and the anti-dandruff effect.

According to an embodiment of the present invention, the scalp care composition according to the present invention may further contain an anionic surfactant, a cationic polymer and a conditioning component which are conventionally used in the art.

Examples of the anionic surfactant used in the present invention include alkyl sulfates, ethoxylated alkyl sulfates, alkyl ethoxycarboxylates, alkyl glyceryl ether sulfonates, ethoxy ether sulfonates, methyl acyl taurates, alkyl sulfosuccinates , Alkyl ethoxysulfosuccinates, alpha-sulfonated fatty acids, their salts and / or their esters, alkylphosphate esters, ethoxylated alkylphosphate esters, linear alkylbenzenesulfonates, paraffin sulfonates, alpha olefinsulfonates, But are not limited to, alkyl alkoxy sulfates and mixtures thereof. The alkyl and / or acyl chain length of the surfactant may be C _{12 -18} , preferably C _{12 -14} . C ₁₂ , It can not be used because the surfactant force is lowered. When C _{18 is} exceeded, it is difficult to use due to low foaming power. The content of the anionic surfactant may be 1 to 50% by weight, preferably 5 to 20% by weight based on the total weight of the composition. When the content of the anionic surfactant is less than 1% by weight, the detergency expected from the detergent can not be exerted. When the amount exceeds 50% by weight, excessive detergency and stimulation to the human body are caused.

Examples of the cationic polymer used in the present invention include, but are not limited to, polymeric quaternary ammonium salts of hydroxyethyl cellulose and guar hydroxypropyl triammonium chloride. The cationic polymer has the effect of conditioning the hair, softening the hair surface, improving the foaming power, and strengthening the foam. The content of the cationic polymer may be 0.1 to 1.0% by weight, preferably 0.1 to 0.5% by weight based on the total weight of the composition. If the content of the cationic polymer is less than 0.1% by weight, the above effects can not be expected. If the content is more than 1.0% by weight, it is difficult to control the viscosity and excessively adheres to hair.

Examples of the conditioning component used in the present invention include cyclomethicone, dimethicone (dimethylpolysiloxane), dimethicone polyol, alkyl dimethicone polyol, silicone ester, fluorodimethicone, alkyl dimethicone, dimethicone copolyol amine, But are not limited to, silicones including carboxy silicones, silicone phosphates esters, silicone resins, silicone phospholipids, amodimethicone, aminopropyldimethicone, and silicone quartz. The content of the conditioning component may be 0.01 to 5.0% by weight, preferably 1.3 to 3.0% by weight, based on the total weight of the composition. If the content of the conditioning component is less than 0.01% by weight, it is difficult to expect a conditioning effect, and if it exceeds 5.0% by weight, quality deterioration due to destabilization of the formulation may be worried.

In addition, according to the embodiment of the present invention, the hair or scalp cosmetic composition according to the present invention may further contain an appropriate amount of dye, preservative, sequestering agent and fragrance which are conventionally used in the art within the range of maintaining stability .

The hair or scalp cosmetic composition according to an embodiment of the present invention may be a hair cleanser composition and may be a hair shampoo, a hair conditioner, a hair conditioner, a hair treatment, a hair tonic, a scarf treatment, a hair lotion, a hair cream, And the like.

The anti-dandruff hair cosmetic composition of the present invention has an advantage that both the improvement of the safety of the scalp and the enhancement effect of anti-dandruff can be obtained.

Hereinafter, preferred examples and comparative examples of the hair or scalp cosmetic composition according to the present invention will be described in more detail. However, the embodiments described below are only preferred embodiments of the present invention, and the present invention is not limited to such embodiments.

[ Example  And Comparative Example ]

Each component was mixed according to the composition shown in Table 1 below to prepare a shampoo.

[Table 1]

ingredient Comparative Example 1
pH = 6.25 (wt.%) (wt.%) Example 1
pH = 6.25 (wt.%) Example 2
pH = 5.05 (% by weight) Purified water 100 To 100 To 100 Zinc platinum-rich solution
(Active ingredient 48%) 2 2 2 Ammonium lauryl sulfate solution
(Active ingredient 25%) 36 36 36 Ammonium laureth sulfate solution (active ingredient 25%) 20 20 20 Methyl paraben 0.02 0.02 0.02 Pearl extract - 5 5 Guar hydroxypropyltrimonium chloride 0.4 0.4 0.4 Cetyl alcohol One One One Dimethicone One One One Citric acid 0.1 0.1 0.2 Trihydroxystearin - - 0.3 Spices 0.7 0.7 0.7

[ Test Example  One] Dandruff  Experiment

In order to examine the effect of reducing dandruff in Comparative Example 1, Examples 1 and 2 of Table 1, 'Guinea pig skin disk manufacturing method and method for measuring antibacterial activity using it' of Korean Patent Publication No. 1999-0061931 were used. The above measurement method is the method closest to the consumer's usage habits. The skin of the guinea pig abdomen similar to human skin is treated with a medicament to remove the dermis attached to the skin, and after drying, the skin is punched to a predetermined thickness and size It is a method of measuring the antibacterial activity most closely to the practical use method of the consumer by using the manufactured skin disk to measure the antibacterial activity of the wash-off product. Table 2 shows the average values of the results of three measurements after treating the skin discs prepared in Comparative Example 1, Example 1, and Example 2, respectively.

[Table 2]

sample Comparative Example 1 Example 1 Example 2 Average 13.2 15.2 17.4

As can be seen from Table 3, in the case of Example 2 having the lowest pH, it can be confirmed that the inhibition zone of dandruff (dysbrus inhibition zone) has a larger value than that of Example 1 having a pH of 6 or more.

[ Test Example  2] Dispersion Stability Experiment

Each component was mixed according to the composition shown in Table 3 below to prepare a shampoo.

[Table 3]

ingredient Comparative Example 2
pH = 5.43 (wt%) Example 3
pH = 5.43 (wt%) Example 4
pH = 5.43 (wt%) Purified water 100 To 100 To 100 Zinc platinum-rich solution
(48% active) 2 2 2 Ammonium lauryl sulfate solution
(Active ingredient 25%) 36 36 36 Ammonium laureth sulfate solution (active ingredient 25%) 20 20 20 Methyl paraben 0.02 0.02 0.02 Pearl extract - 5 5 Guar hydroxypropyltrimonium chloride 0.4 0.4 0.4 Cetyl alcohol One One One Dimethicone One One One Citric acid 0.1 0.1 0.2 Trihydroxystearin - - 0.3 Ethylene glycol distearate 0.3 0.3 - Spices 0.7 0.7 0.7

Comparative Example 2, Example 4 and Example 5 were respectively prepared and then the dispersion stability was observed at low temperature, 30 ° C, 45 ° C and room temperature. The ethylene glycol distearate contained in Comparative Example 2 is generally used in the form of a dispersion stabilizing agent in the formulations. In this test, in the dispersion stabilization of zinc pyrithione, Were used for comparison. After 7 days of observation, in Comparative Example 2, the precipitate of zinc pyrithione at 45 ° C was visually observed. In Examples 4 and 5, the dispersion stability was more than one month at low temperature, room temperature and high temperature. As can be seen from these results, it was confirmed that when 0.1 wt% or more of trihydroxystearin was used, stability of zinc pyrithione at a low pH was improved.

Claims (6)

An anti-dandruff hair cosmetic composition comprising zinc pyridinium and black bean extracts of Formula (1) as an active ingredient.  [Chemical Formula 1]

The anti-dandruff hair cosmetic composition according to claim 1, wherein the composition further contains trihydroxystearin as an active ingredient. The method according to claim 1, Wherein the zinc pyrithione content is 0.01 to 2.0 wt% based on the total weight of the composition. The method according to claim 1, Wherein the content of the black pearl extract is 0.01 to 10.0% by weight based on the total weight of the composition. 3. The method of claim 2, Wherein the content of the trihydroxystearin is 0.01 to 5% by weight based on the total weight of the composition. The method according to claim 1, Wherein the hair cosmetic composition has a formulation selected from the group consisting of shampoos, rinses, hair tonics, and hair treatments.