JP2014055125A - Cysteamine hair treatment agent in which peculiar odor is deodorized - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair treatment agent, deodorizing a peculiar odor of the hair treatment agent including cysteamine or salt thereof.SOLUTION: A hair treatment agent includes cysteamine or salt thereof as a main material. With respect to 100 wt.% of cysteamine or salt thereof, 1.0 wt.% or more and 50.0 wt.% or less of ethanol, and 5.0 wt.% or more and 50.0 wt.% or less of chelator are included, so that a peculiar odor of cysteamine is deodorized.

Description

Technical field to which the invention belongs

  The present invention relates to a composition of a hair treatment agent that deodorizes the unpleasant reaction odor of a hair treatment agent containing cysteamine.

  A hair treatment agent containing cysteamine is a hair treatment agent that is optimized for damaged hair because it is effective in the acidic region mainly for the purpose of deformation of the hair.

  However, since cysteamine generates an unpleasant specific odor when acting on hair, development of a hair treatment agent that deodorizes the specific odor has been desired.

In order to suppress this unpleasant specific odor, a post-treatment agent is provided. It contains cyclodextrin and contains a deodorant composition (see Patent Document 1) that utilizes the property of incorporating a substance insoluble in water into a hydrophobic space inside the molecule, or a modified silicone, and uses a property that covers the hair. An odorant composition (see Patent Document 2) is provided. However, in the case of a post-treatment agent, the effect is reduced when washed away, and an unpleasant specific odor is generated.
JP 2001-123194 A JP 2006-117622 A

Similarly, a method of treating with an oxidizing agent containing hydrogen peroxide has also been proposed (see Patent Document 3). However, in the current Pharmaceutical Affairs Law, a permanent mainly composed of thioglycolic acid and a salt thereof, cysteine and a salt or derivative thereof. It can be used only for waving agents, that is, quasi drugs, cannot be used for so-called cosmetics of hair treatment agents containing cysteamine and its salts, and is not practical.
JP 2004-155748 A

Problems to be solved by the invention

  The present invention has been made in view of the above circumstances, and its purpose is to use an oxidizing agent containing bromic acid that is permitted for use in so-called cosmetics of hair treatment agents containing cysteamine and its salts under the current Pharmaceutical Affairs Law. Excellent hair treatment by deodorizing cysteamine's unpleasant specific odor without damaging the basic functions of hair treatment agents such as wave and straight hair treatment effects and hair finish feeling. It is to provide an agent.

Means for solving the problem

  As a result of researches to solve the above problems, it has been found that the above problems can be solved by blending ethanol with a specific amount of a chelating agent in a hair treatment agent containing cysteamine or a salt thereof. It came to complete.

  Chelating agents have the property of inactivating metal ions, bind to ingredients and make them less soluble in water, and make them easier to oxidize.

  Examples of the chelating agent include edetic acid, pentetic acid, hydroxyethylethylenediaminetriacetic acid, etidronic acid, citric acid, phytic acid, phosphoric acid, ammonium phosphate, malic acid, gluconic acid, carboxylic acid, and the like. Two or more types can be selected and used.

Effect of the invention

  According to the present invention, the unpleasant specific odor of the hair treatment agent containing cysteamine or a salt thereof is eliminated, and the finished feel of the hair is not impaired.

  Hereinafter, the best mode for carrying out the present invention will be described.

  Cysteamine or a salt thereof constituting the hair treatment agent has a strong action on hair and an unpleasant odor in proportion to the blending weight%.

  In the examples, the following were used. The blending amount is% by weight.

  In the hair treatment agent according to this embodiment, L-cysteine or a salt thereof is added in the range of DL-cysteine 0.5 wt% or more and 50.0 wt% or less as an additive material constituting the hair treatment agent together with cysteamine or a salt thereof. DL-malic acid is contained in the range of 0.01 wt% to 5.0 wt% and ethanol in the range of 0.1 wt% to 5.0 wt%.

One typical configuration example (formulation example) of such a hair treatment agent is shown in Table 1.

  The greater the amount of cysteamine hydrochloride in the examples, the more markedly the effect of the present invention on the hair treatment agent can be evaluated.

  Select a monitor with hair color treatment, wind a rod around the hair, apply the hair treatment agent in Formula (1) above (Table 1), leave it for 8 to 10 minutes, rinse with water, and then oxidize After applying sodium bromate as an agent and leaving it to stand for 10 minutes, after rinsing and after shampooing the next day, the odor was evaluated by a sensory test. The evaluation criteria in the sensory test are as follows.

(Odor evaluation criteria)
◎… The peculiar odor can be removed after the shampooing on that day and the next day.
○: The specific odor can be slightly deodorized on the day, and after the shampoo the next day, the specific odor can be deodorized.
Δ: The specific odor can be slightly deodorized after shampooing on the day and the next day.
X: Almost no specific odor can be removed.

Monitor (A) Female 39 years old ◎
Monitor (B) Female 63 years old ◎
Monitor (C) Female 68 years old ◎
Monitor (D) Male 46 years old ◎
Monitor (E) Female 41 years old ◎
Monitor (F) Female 75 years old ◎
Monitor (G) Female 29 years old ◎
Monitor (H) female 61 years old ◎
Monitor (K) Female 28 years old ◎
Monitor (L) female 39 years old ◎

Claims (2)

  A hair treatment agent containing cysteamine or a salt thereof as a main raw material, containing a chelating agent and ethanol, and deodorizing a specific odor of cysteamine.   It is in the range of 1.0% to 50.0% by weight of ethanol and 5.0% to 50.0% by weight of chelating agent for 100% by weight of cysteamine or its salt, eliminating the specific odor of cysteamine. A hair treatment agent characterized by odor.