JP2008208101A - Hair cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair cosmetic, other than oxidative hair dyeing agents, that has good preservation stability and exhibits high effects for repairing damaged hair and imparting smoothness to hair. <P>SOLUTION: The hair cosmetic other than oxidative hair dyeing agents comprises 0.1-2.0 mass% of an alkyl glucoside represented by general formula (I) [wherein R is a 10-22C saturated or unsaturated alkyl group; and n is an integer of 1-5] and 0.4-12 mass% of cetearyl alcohol. Preferably, the alkyl glucoside is cetearyl glucoside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to hair cosmetics excluding oxidative hair dyes such as hair straighteners, permanent wave agents, shampoos, and conditioners, and more particularly has good storage stability, repairs damaged hair, and the friction coefficient of the hair surface. It is related with the hair cosmetics which can reduce hairiness and can provide smoothness to hair.

Cuticles are damaged by chemical treatments such as straightening and permanent wave treatment, and the hair surface is degreased and hydrophilized, thereby losing luster and smoothness. Therefore, by adding hydrolyzed protein, cationized cellulose, silicone, etc. to hair cosmetics such as permanents, shampoos, conditioners, etc., chemical treatments such as perms and hair dyeing, as well as hair washing, brushing, and hair dryers. Attempts have been made to prevent hair damage due to physical treatments such as, to recover damaged hair and to give it smoothness.

In particular, hair cosmetics containing a silylated peptide and silicone according to Japanese Patent No. 3446980 (Patent Document 1), and a silylated peptide according to Japanese Patent No. 3516276 (Patent Document 2) and a cationic surfactant are blended. Hair cosmetics can prevent hair damage and impart smoothness to hair.

  However, O / W emulsified hair cosmetics such as hair straighteners and conditioners formulated with silylated peptides have poor storage stability and separation of the oil phase and aqueous phase is sufficient when treated on hair. There was a problem that it was not possible to demonstrate the effect.

In addition, in hair cosmetics that are not O / W emulsion type such as shampoos, those containing a silylated peptide are inherent in the silylated peptide due to the generation of insoluble matter due to copolymerization of silanol groups of the silylated peptide. In some cases, the effect of the above cannot be fully exhibited, and the hair cannot be smoothened.
Japanese Patent No. 3446980 Japanese Patent No. 3516276

Therefore, an object of the present invention is to provide a hair cosmetic excluding an oxidative hair dye having good storage stability, repairing damaged hair, and imparting smoothness to the hair.

As a result of studies to solve the above problems, the present inventors have found that hair straighteners, permanent wave agents, shampoos, conditioners and other hair cosmetics containing alkyl glucoside and cetearyl alcohol have storage stability. It has been found that the damaged hair is repaired well, the friction coefficient of the hair surface is lowered, and the hair is smoothened, and the present invention has been completed.

That is, this invention provides the hair cosmetics except an oxidation type hair dye characterized by containing alkyl glucoside and cetearyl alcohol.

The hair cosmetic composition of the present invention has good storage stability, repairs damaged hair, further reduces the friction coefficient of the hair surface, and imparts smoothness to the hair.

Examples of the alkyl glucoside used in the hair cosmetic composition of the present invention include the following general formula (I):
[Wherein R is a saturated or unsaturated alkyl group having 10 to 22 carbon atoms, and n is an integer of 1 to 5], and a saturated or unsaturated alkyl group is ether-bonded to glucose or polyglucose It is what. Since this ether bond is not easily cleaved, the alkyl glucoside can stably function as an emulsifier.

In the alkyl glucoside, the polymerization degree of glucose is 1 to 5, and the carbon number of the alkyl group is preferably 10 to 22, and more preferably 16 to 22. When the degree of polymerization of glucose and the number of carbon atoms of the alkyl group are outside the above ranges, the balance between the hydrophilic group and the hydrophobic group necessary for constituting the hair cosmetic composition of the present invention is lost, so that the hair is smooth enough. There is a possibility that it can not be given. The hair cosmetic composition of the present invention may use a single substance alkyl glucoside, or may use a mixture of alkyl glucosides having different degrees of polymerization or different alkyl groups, but cetearyl glucoside is used. Is most preferred.

It is preferable that the compounding quantity in the hair cosmetics of alkyl glucoside is 0.1-2.0 mass%, and 0.2-1.5 mass% is more preferable. When the amount is less than the above range, the effect of imparting smoothness to the hair cannot be obtained sufficiently. On the other hand, even if the blending amount is increased from the above range, the effect of imparting smoothness to the hair is the same as that in the above range, so that an effect commensurate with the blending amount cannot be obtained.

Moreover, it is preferable that the compounding quantity in the hair cosmetics of cetearyl alcohol is 0.4-12 mass%, and 0.8-10 mass% is more preferable. When the blending amount is less than the above range, the effect of imparting smoothness to the hair is not sufficiently obtained. When the blending amount is more than the above range, the hair is made sticky and the hair cosmetic composition of the present invention is There is a risk of impairing the effect of imparting smoothness to the hair.

In addition, what is marketed as a composition can also be used for the alkyl glucoside and cetearyl alcohol used for this invention, For example, the mixed composition etc. which are sold by the brand name of Monta Nobu 68 from Sepic are mentioned. .

EXAMPLES Next, although an Example is given and this invention is demonstrated more concretely, this invention is not limited to these Examples. In addition, all the compounding quantities of each component in an Example and a comparative example are based on a mass part, and about the thing whose compounding quantity is not solid content, solid content concentration is shown in parenthesis after a component name. Prior to the examples, the method for preparing damaged hair used in the treatment with the hair straightener, shampoo, and conditioner of the examples, the method for evaluating the smoothness and damage level of the hair surface, and the storage stability of the prepared hair cosmetics Describe the evaluation method.

[Production method of damaged hair]
A hair bundle having a length of 13 cm and a weight of 2 g was prepared, washed with a 2% aqueous solution of polyoxyethylene (3) sodium lauryl ether sulfate, rinsed in running tap water, and dried with a dryer. This hair bundle is immersed in a bleaching agent of a 1: 1 (mass ratio) mixture of 6% hydrogen peroxide and 2% ammonia kept at 40 ° C. for 1 hour, rinsed in running tap water, and room temperature. The hair was decolorized by air drying. A hair bundle obtained by repeating this decoloring treatment step three times was used as damaged hair in the following Examples and Comparative Examples.

[Evaluation of smoothness of hair surface]
Samples for measurement were prepared by aligning and fixing 20 hairs treated with each hair cosmetic material to a slide glass. In addition, 20 samples were prepared for each hair cosmetic. Next, using a friction tester KSE-SE (manufactured by Kato Tech Co., Ltd.), a frictional static load of 25 gf, a sample stage moving speed of 0.5 mm / sec., A measurement distance of 20 mm, 20 ° C., and a relative humidity of 50 ± 1%. Under the conditions, the average friction coefficient of each measurement sample was measured. In addition, it has shown that the surface of hair is smooth, so that an average friction coefficient is low.

[Evaluation of hair surface damage]
Scanning Electron Microscope (SEM) The surface state of hair treated with each hair cosmetic was observed with JSM-5800LV manufactured by JEOL Ltd. In addition, the state where the curling of the cuticle on the hair surface (lift-up) has not occurred means that the degree of damage to the hair is lower.

[Evaluation of storage stability of hair cosmetics]
The appearance of the hair cosmetic was visually observed when each hair cosmetic was stored at a constant temperature of 50 ° C. for 1 month. The evaluation criteria are as follows.

Evaluation criteria ++: Separated into an oil phase and an aqueous phase +: An emulsified state is maintained, but aggregates are generated-: A uniform emulsified state

Example 1
The first and second hair straightening agents having the compositions shown in Table 1 were prepared, and the smoothness and damage degree of the hair after performing the hair straightening treatment on the damaged hair were compared and evaluated. Moreover, the storage stability test of each hair straightener was performed. In Comparative Examples 1 and 2, polyoxyethylene (33) cetearyl ether was used as an emulsifier instead of alkyl glucoside. Further, Comparative Example 2 was blended with silylated hydrolyzed soy protein, which is highly effective in imparting smoothness to hair.

The hair straightening treatment with the hair straightener was carried out as follows. That is, after applying 2 g of each hair straightener 1st agent uniformly to the hair bundle of damaged hair, each hair bundle was covered with a wrap and allowed to stand at 40 ° C. for 20 minutes. Thereafter, the wrap was removed, each hair bundle was rinsed in running tap water for 1 minute, towel-dried, dried moderately with a hair dryer, and processed with a high-temperature hairstyling iron set at 180 ° C. Next, 2 g of each hair straightening agent second agent was uniformly applied to the hair bundle subjected to the first agent treatment, covered with a wrap, and allowed to stand at 40 ° C. for 20 minutes. Thereafter, the wrap was removed, each hair bundle was rinsed for 1 minute in running tap water, dried with a towel, and then dried with a hair dryer.

The smoothness and damage level of the hair surface of each hair bundle subjected to the above-mentioned curly hair straightening treatment, and the storage stability of the curly hair straightener were evaluated by the above methods.

  The evaluation results of the coefficient of friction on the hair surface are shown in Table 2 as average values.

As shown in Table 2, the coefficient of friction of the hair surface treated with the hair straightener containing cetearyl glucoside and cetearyl alcohol was lower than that treated with other hair straighteners, and the shrinkage of the present invention was reduced. It was confirmed that the hair straightener smoothes the surface of the hair.

  Moreover, the evaluation result of the damage degree of the hair surface is shown in FIGS.

As shown in FIGS. 1 to 3, only the cuticle on the hair surface treated with the hair straightener containing cetearyl glucoside and cetearyl alcohol is not lifted up, and the hair straightener of the present invention is damaged to the hair. Was confirmed to be low.

  Furthermore, Table 3 shows the evaluation results of the storage stability of the prepared hair straightener.

As shown in Table 3, the hair straighteners of Example 1 and Comparative Example 1 were excellent in storage stability for both the first agent and the second agent, whereas the hair straightener of Comparative Example 2 was used. Was poor in storage stability.

  From these results, it has been clarified that the hair straightener, which is a hair makeup containing the alkyl glucoside of the present invention and cetearyl alcohol, prevents hair damage and imparts smoothness to the hair. Moreover, the effect was better than the silylated hydrolyzed soy protein blended product which is said to have a high effect of imparting smoothness to hair. Furthermore, the hair straightener of the present invention was excellent in storage stability.

Example 2
Three types of shampoos having the compositions shown in Table 4 were prepared, and the hair bundle of damaged hair was washed with each shampoo. That is, the hair bundles are immersed in a solution obtained by diluting each shampoo 10 times with water (bath ratio 1:20), shaken at 40 ° C. for 10 minutes, then rinsed in running tap water for 1 minute, hair dryer Dried. After repeating this process 5 times, the smoothness and damage degree of the hair surface after washing were evaluated. The storage stability of each shampoo was also evaluated.

The smoothness and damage degree of the hair surface of each hair bundle subjected to the above shampoo treatment and the storage stability of the shampoo were evaluated by the above methods.

  The evaluation results of the coefficient of friction on the hair surface are shown in Table 5 as average values.

As shown in Table 5, the friction coefficient of the hair surface treated with the shampoo containing cetearyl glucoside and cetearyl alcohol is lower than that of the shampoo treated with other shampoos, and the shampoo of the present invention smoothes the hair surface. I was able to confirm.

  Moreover, the evaluation result of the damage degree of the hair surface is shown to FIGS.

As shown in FIGS. 4 to 6, only the cuticle on the hair surface treated with the shampoo containing cetearyl glucoside and cetearyl alcohol is not lifted up, and the shampoo of the present invention repairs hair damage. Was confirmed.

  Furthermore, Table 6 shows the evaluation results of the storage stability of the prepared shampoo.

As shown in Table 6, the shampoos of Example 2 and Comparative Example 3 were excellent in storage stability, whereas the shampoo of Comparative Example 4 was poor in storage stability.

  From these results, it was clarified that the shampoo, which is a hair makeup containing the alkyl glucoside of the present invention and cetearyl alcohol, repairs damage to the hair and imparts smoothness to the hair. Moreover, the effect was better than the silylated hydrolyzed wheat protein blended product which is said to be highly effective in imparting smoothness to hair. Furthermore, the shampoo of the present invention was excellent in storage stability.

Example 3
Three types of conditioners having the compositions shown in Table 7 were prepared, and the hair bundles of damaged hair were subjected to the conditioner treatment. That is, 5 g of conditioner was uniformly applied to each hair bundle. Next, the hair bundle was covered with a wrap and allowed to stand at 40 ° C. for 10 minutes, then the wrap was removed, the hair bundle was rinsed for 1 minute in running tap water, and dried with a hair dryer. After repeating this process five times, the method described above was used to evaluate the smoothness and damage level of the hair surface and the storage stability of the conditioner.

The smoothness and damage degree of the hair surface of each hair bundle subjected to the above conditioner treatment, and the storage stability of the conditioner were evaluated by the above methods.

  The evaluation results of the friction coefficient of the hair surface are shown in Table 8 as average values.

As shown in Table 8, the friction coefficient of the hair surface treated with the conditioner containing cetearyl glucoside and cetearyl alcohol was lower than that treated with the other conditioners, and the conditioner of the present invention smoothed the hair surface. I was able to confirm.

  Moreover, the evaluation result of the damage degree of the hair surface is shown to FIGS.

As shown in FIGS. 7 to 9, only the cuticle on the hair surface treated with the conditioner containing cetearyl glucoside and cetearyl alcohol is not lifted up, and the conditioner of the present invention repairs the damage of the hair. Was confirmed.

  Furthermore, Table 9 shows the evaluation results of the storage stability of the prepared conditioner.

As shown in Table 9, the conditioners of Example 3 and Comparative Example 5 were excellent in storage stability, whereas the conditioner of Comparative Example 6 was poor in storage stability.

  From these results, it became clear that the conditioner, which is a hair makeup containing the alkyl glucoside of the present invention and cetearyl alcohol, repairs hair damage and imparts smoothness to the hair. Moreover, the effect was better than the silylated hydrolyzed silk compounded product which is said to be highly effective in imparting smoothness to hair. Furthermore, the conditioner of the present invention was excellent in storage stability.

SEM image of the surface of damaged hair treated with the hair straightener of Example 1 SEM image of the surface of damaged hair treated with the hair straightener of Comparative Example 1 SEM image of the surface of damaged hair treated with the hair straightener of Comparative Example 2 SEM image of the surface of damaged hair treated with the shampoo of Example 2 SEM image of the surface of damaged hair treated with the shampoo of Comparative Example 3 SEM image of the surface of damaged hair treated with the shampoo of Comparative Example 4 SEM image of the surface of damaged hair treated with the conditioner of Example 3 SEM image of the surface of damaged hair treated with the conditioner of Comparative Example 5 SEM image of the surface of damaged hair treated with the conditioner of Comparative Example 6

Claims (4)

A cosmetic for hair excluding an oxidized hair dye characterized by containing an alkyl glucoside and cetearyl alcohol. The hair cosmetic composition excluding the oxidized hair dye according to claim 1, comprising 0.1 to 2.0% by mass of alkyl glucoside and 0.4 to 12% by mass of cetearyl alcohol. The alkyl glucoside is represented by the following general formula (I)
The oxidation type dye according to claim 1 or 2, wherein R is an alkyl glucoside represented by the formula: R is a saturated or unsaturated alkyl group having 10 to 22 carbon atoms, and n is an integer of 1 to 5. Hair cosmetics excluding hair. 4. The hair cosmetic composition excluding an oxidized hair dye according to any one of claims 1 to 3, wherein the alkyl glucoside is cetearyl glucoside.