JPH10158126A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair cosmetic capable of reducing the amount of an antimicrobial agent, excellent in safety, and high in a dandruff-preventing effect. SOLUTION: This hair cosmetic contains one or more kinds of antimicrobial compounds excluding ethyl alcohol in a total amount of 0.00001-0.5wt.% based on the whole amount of the hair cosmetic and one or more kinds of substances selected from among the below-described compounds in a total amount of 0.005-1.0wt.% based on the whole amount of the hair cosmetic as active ingredients. (1) Lecithin, (2) ascorbic acid, (3) erythorbic acid, (4) guaiacum resin, (5) nordihydroguaiaretic acid, (6) gallic acid, (7) an ascorbate salt, (8) an erythorbate salt, and (9) a nordihydroguaiaretate salt.

Description

Description: TECHNICAL FIELD The present invention relates to a hair cosmetic, and more particularly, to an anti-dandruff hair cosmetic comprising a compound having a bactericidal and antibacterial action and a specific substance. [Prior art] In general, dandruff consists of secretions of sebaceous glands, secretions of sweat glands, exfoliation of the epidermal layer, etc., and usually occurs due to increased secretion of sebaceous glands, etc., but when bacteria or yeasts infect the skin, It is said that the occurrence of dandruff is promoted pathologically.
For this reason, hair cosmetics to which an antibacterial agent has been added have been used for preventing dandruff. For example, zinc pyrithione (hereinafter referred to as ZPT) has been conventionally used as the most effective anti-dandruff agent, but it is well known that this substance also belongs to the category of antibacterial agents. However, some of these antibacterial agents and bactericides have safety problems, and it is considered that it is preferable to avoid using them in large quantities as much as possible. [Problems to be Solved by the Invention] Therefore, the present invention requires less use of antibacterial agents and bactericides, is excellent in safety,
An object of the present invention is to provide a hair cosmetic having a high anti-dandruff effect. [Means for Solving the Problems] In view of the above-mentioned circumstances, the present inventors have provided a hair cosmetic composition which is excellent in safety and further improves the anti-dandruff effect of ZPT and other bactericidal and antibacterial agents. As a result of intensive research for the purpose of developing an antibacterial and antibacterial agent, when combined with a specific substance,
It has been found that the dandruff-preventing action is remarkably enhanced, and the use concentration of both is reduced. Then, they found that the combination of the specific amount of the bactericidal / antibacterial agent and the specific amount of the specific substance dramatically improved the dandruff-preventing effect and improved the safety, and completed the present invention. That is,
In the present invention, one or two or more compounds having a bactericidal and antibacterial action excluding ethyl alcohol are selected from the following group, in a total amount of 0.0001 to 0.5% by weight based on the total amount of the hair cosmetic. 0.005 to 1.0% by weight, based on the total amount of the hair cosmetic, in a total amount of one or two or more substances as active ingredients
And a hair cosmetic composition characterized by comprising: (1) lecithin (2) ascorbic acid (3) erythorbic acid (4) guaiac fat (5) nordihydroguaiaretic acid (6) propyl gallate (7) salt of ascorbic acid (8) salt of erythorbic acid (9) ) Salt of nordihydroguaiaretic acid The constitution of the present invention will be described below. The substance used in combination with the compound having a bactericidal and antibacterial action in the present invention includes: (1) lecithin (2) ascorbic acid (3) erythorbic acid (4) guaiac butter (5) nordihydroguaiaretic acid (6) propyl gallate (7) A salt of ascorbic acid (8) A salt of erythorbic acid (9) A salt of nordihydroguaiaretic acid. Examples of the salts of ascorbic acid, erythorbic acid or nordihydroguaiaretic acid include sodium salts, potassium salts and the like. One or more of these are appropriately selected and blended. The compounding amount of the above substances is 0.005 to the total amount of the hair cosmetic in total.
-10% by weight. Compounds having a bactericidal and antibacterial action used in the present invention include zinc pyrithione, trichlorocarbanilide, triclosan, salicylic acid, sodium benzoate, hinokitiol, photosensitizers, halocarbans, chlorhexidine gluconate, and benzalkonium chloride. One or more of these are appropriately selected and blended. The compounding amount of the compound having the above-mentioned bactericidal / antibacterial action is a total amount of 0.00% based on the total amount of the hair cosmetic.
01 to 0.5% by weight. In the cosmetic of the present invention, usual components to be blended in addition to the above-mentioned essential components, for example, oil, ultraviolet absorber, surfactant, preservative, humectant, fragrance, water, alcohol, thickener, color Agents and the like can be appropriately compounded as needed. With the hair cosmetic of the present invention,
Widely used for scalp or hair, such as hair tonic, hair liquid (liquid hair wash), scalp emulsion,
Hair creams, hair shampoos, hair rinses, hair sprays and the like are included. The hair cosmetic composition of the present invention has low irritation and little sensitization, and therefore can be used continuously for a long period of time. [Examples] Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. The present invention is not limited by this. The compounding amount is% by weight. Examples 1 to 6 and Comparative Examples 1 to 3 Each of the specific bactericidal / antibacterial agents and the specific substance were blended in a hair tonic, and the dandruff-preventing effect was measured. Based on the formulation in Table 1, hair tonics were produced by a conventional method, and the dandruff-preventing effect was measured. (Method for measuring anti-dandruff effect)
Sixty men with relatively many dandruffs were tested. Before the start of the test, the hair was washed with a shampoo containing no drug, and the hair was toned with the same hair tonic without the drug. The dandruff accumulated for two days after the shampoo was collected twice a week for one month, and the collected dandruff was collected. The amount of protein in the medium was measured (control phase). Then, the panel was divided into 20 groups of three persons, and a shampoo without a drug and various kinds of the above-mentioned display substances and a hair tonic with a bactericidal / antibacterial agent were used for one month. Twice a week as in the control phase, dandruff accumulated two days after shampooing was collected, and the amount of protein was measured (sample phase). The hair tonic is used once a day, and the average amount of dandruff protein in the control period is compared with the average amount of dandruff protein in the sample period. If the reduction rate of dandruff is 50% or more, A40 % Or more and less than 50%: B: 20% or more, less than 40%: C: Less than 20%: D The results are shown in Table 1. As a result, in each of the examples, it was recognized that dandruff was significantly prevented. Example 7 To 55 g of ethyl alcohol, 2 g of polyoxyethylene (8 mol) oleyl alcohol ether, 0.5 g of triclosan, and an appropriate amount of a fragrance were added and dissolved at room temperature to obtain an alcohol phase. Separately, 5 g of glycerin and 0.2 g of ascorbic acid were added to 37.3 g of purified water and dissolved by heating. An alcohol phase was added to the aqueous phase to solubilize, and after cooling, an appropriate amount of a dye was added to obtain a hair tonic having an anti-dandruff effect. Example 8 15 g of triethanolamine lauryl sulfate, 0.5 g of zinc pyrithione, 5 g of coconut oil fatty acid monoethanolamide, 0.8 g of dibutylhydroxytoluene, 0.1 g of guaiac butter, 0.1 g of guaiac butter, a pigment and a fragrance were added to 78.6 g of purified water in appropriate amounts. After the addition, mixing by heating, and cooling, a hair shampoo having an anti-dandruff effect was obtained.

Continuation of front page    (72) Inventor Junichi Koyama             1050 Nippa-cho, Kohoku-ku, Yokohama             Iseido Research Laboratory (72) Inventor Izumi Horii             1050 Nippa-cho, Kohoku-ku, Yokohama             Iseido Research Laboratory

Claims (1)

Claims: One or more compounds having a bactericidal and antibacterial action excluding ethyl alcohol are selected from the following group in a total amount of 0.0001 to 0.5% by weight based on the total amount of the hair cosmetic. A hair cosmetic, characterized in that one or more of the above-mentioned substances are used as an active ingredient and 0.005 to 1.0% by weight based on the total amount of the hair cosmetic. (1) lecithin (2) ascorbic acid (3) erythorbic acid (4) guaiac fat (5) nordihydroguaiaretic acid (6) propyl gallate (7) salt of ascorbic acid (8) salt of erythorbic acid (9) ) Nordihydroguaiaretic acid salts