JP2008074762A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic which reduces loads to skins, is excellent in a skin texture-improving effect and in an aged keratin-removing effect, is little in sticky touch, and is excellent in a sense of use. <P>SOLUTION: This cosmetic which reduces loads to skins, is excellent in a skin texture-improving effect and in an aged keratin-removing effect, is little in sticky touch, and is excellent in a sense of use is characterized by containing 0.01 to 1.0 wt.% of zinc proline complex, 0.001 to 1.0 wt.% of L-arginine and 0.0001 to 5.0 wt.% of an extract of coix seed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a cosmetic that is excellent in skin familiarity, has less stickiness and less burden on the skin, and improves skin texture while removing aging skin.

Conventionally, many cosmetics aimed at removing aging keratin are commercially available. Many of such cosmetics contain a keratin peeling component such as salicylic acid and α-hydroxy acid typified by lactic acid and glycolic acid. However, cosmetics containing these exfoliating ingredients are excellent in exfoliating effect, but have a heavy burden on the skin and are not preferable in terms of functionality.

In order to solve the conventional problems as described above, a method of blending citric acid or fruit acid that has a relatively low burden on the skin has been proposed, but the burden on the skin is still low and the skin It has not yet resulted in cosmetics that improve the texture.
JP-A-11-263707 JP 2000-247907 A JP 2004-277295 A

The subject of this invention is providing the cosmetics excellent in the reduction | decrease of the burden to skin, the improvement effect of a texture, and the feeling of use with little stickiness.

  In such a situation, the inventor has conducted intensive research to solve the above-mentioned problems, and as a result, a proline zinc complex, L-arginine, and yokuinin extract are blended at a specific ratio, thereby removing aging keratin and improving skin texture. In addition, the present inventors have found that the skin is not sticky to the skin and the burden on the skin is small, and that the touch is excellent, and the present invention has been completed.

  That is, the present invention relates to 0.01% to 1.0% by weight of proline zinc complex, 0.001% to 1.0% by weight of L-arginine and 0.0001% to 5.0% of yokuinin extract. By blending by weight%, the aging exfoliation removing effect and the skin texture improving effect are excellent, and the skin is not sticky and the burden on the skin is small, enabling an excellent feeling of use.

  The cosmetics of the present invention have excellent quality and effects as cosmetics, such as a low burden on the skin, excellent aging exfoliation removal effect and skin texture improvement effect, low stickiness to the skin and excellent use feeling. .

The proline zinc complex that can be used in the present invention is obtained by heating and mixing glycine, L-glutamic acid, L-proline, sodium hydroxide, and zinc sulfate, and the structure thereof is shown in the following formula 1. Further, the blending amount is not particularly limited as long as it is effective, but the blending amount of the proline zinc complex is preferably 0.01% by weight to 1.0% by weight.

L-arginine that can be used in the present invention is not particularly problematic as long as it is usually used in cosmetics and the like. Further, the amount is not particularly limited as long as it is effective, but 0.001% by weight to 1.0% by weight is preferable.

The Yokuinin extract that can be used in the present invention is not particularly limited as long as it is an extract obtained from the seeds of Coix lacryma-jobi vai. Moreover, there is no restriction | limiting in particular if a compounding quantity is effective, However, 0.0001 weight%-5.0 weight% in dry weight conversion are preferable. The extraction method of Yokuinin extract is not particularly limited as long as the active ingredient can be extracted, and polar and nonpolar solvents can be used as the extraction solvent. If it is water, it can be extracted at about 60 ° C. for several hours. be able to. If it is ethanol extraction, it can be obtained by performing Soxhlet extraction.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited to these examples.

Tables 1 and 2 show examples and comparative examples of the skin lotion of the present invention in which a proline zinc complex, L-arginine and yokuinin extract are blended. In addition, the manufacturing method of each lotion of an Example and a comparative example was prepared in accordance with the conventional method.

As a comparative example, a sample was prepared using, as a comparative control, the same Gramineae genus Juzudama extract as a component replacing Yokuinin extract, and L-form serine, lysine and proline as the same basic amino acid as a component replacing L-arginine.

Moreover, the sticky feeling was evaluated by a sensory sensation by a specialized panelist, the texture improvement effect was evaluated with a microscope, and the aging keratin removal effect was evaluated with a protein dissolution test. Details will be described below.

[Sensory evaluation method]
1. The sensory evaluation items were tacky.
2. Evaluation method Using the lotion prepared with the example formulation shown in Table 1 and the comparative example formulation shown in Table 2, a method was used in which 10 professional female panelists randomly used the samples. Specifically, for each sample, an appropriate amount was applied to the face twice daily after washing in the morning and before going to bed, and this was continued for 3 consecutive days. After 4 days, the stickiness was self-scored in 5 stages, and sensory evaluation was performed. It was. And the average of 10 persons was divided into 4 grades and used as evaluation values. The evaluation contents are shown in Table 3, and the evaluation results of Examples and Comparative Examples are shown in Table 6. In conducting this evaluation, there were no skin problems such as skin irritation.

[Check texture improvement]
Using the lotion prepared with the example formulation shown in Table 1 and the comparative example formulation shown in Table 2, a method in which 10 panelists randomly used the samples was used. Specifically, for each sample, the texture of the facial cheek area was confirmed with a microscope before the start of the test, and then an appropriate amount was applied to the face twice daily after washing in the morning and before going to bed. It continued for 3 days, and after 4 days, the improvement degree of texture was confirmed again with a microscope and evaluated in 4 stages. The evaluation contents are shown in Table 4, and the evaluation of the examples and comparative examples are shown in Table 6.

[Protein dissolution test]
The lotion prepared with the example formulations shown in Table 1 and the comparative example formulation shown in Table 2 was used, and the soiling cloth was used. Specifically, for one sample, the contaminated cloth is cut into a 2 cm square, and the brightness is confirmed with a colorimeter before the start of the test. Thereafter, the sample is dipped at 30 ° C. for 1 hour, and then washed and dried. Thereafter, the brightness was measured, and the degree of change in brightness was evaluated. Table 5 shows the evaluation contents and Table 6 shows the evaluation of the examples and comparative examples.

From Table 6, Example 1-Example 3 which is this invention are excellent in all three items of the texture improvement effect, the aging dead skin removal effect, and the feeling of stickiness immediately after application | coating compared with Comparative Example 1- Comparative Example 10. It has been found. In addition, from the results of each comparative example, when the same basic amino acid is blended instead of L-arginine, or when the same Gramineae genus Jizudama is blended instead of Yokuinin extract, the texture improvement effect, aging Satisfactory results were not obtained in all three items of the keratin removing effect and the sticky feeling immediately after coating. This is because the combination of a proline zinc complex and an L-arginine / yokuinin extract does not have a synergistic effect when one of the three combinations is replaced with another component, in other words, a proline zinc complex and an L -It means that each component acts synergistically by the combination of arginine and Yokuinin extract, improving all three items of texture improvement effect, aging exfoliation removal effect, and sticky feeling immediately after application.

A cosmetic comprising a combination of the proline zinc complex of the present invention, L-arginine and yokuinin extract, combined with a specific amount gives the skin a moist feeling, improves skin familiarity, and provides an excellent feeling of use with little stickiness. Therefore, it can be widely applied to cosmetics.

Claims (1)

It contains 0.01% to 1.0% by weight of a proline zinc complex, 0.001% to 1.0% by weight of L-arginine, and 0.0001% to 5.0% by weight of yokuinin extract. Features cosmetics.