油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
頭皮・頭髪用洗浄剤としてのアニオン界面活性剤の研究
宮澤 清田村 宇平勝村 芳雄内川 恵一坂本 哲夫富田 健一
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1989 年 38 巻 4 号 p. 297-305

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The influences of six representative surfactants on hair and the scalp were investigated under various conditions such as : irritation, protein denaturation, sorption onto commercial hide powder or keratin powder, change in turnover time of the stratum corneum, dandruff and disintegration of the cuticle.
1. Influence of surfactants on scalp.
Although the cumulative irritation test, 48-hour closed patch test, and immersion test were performed to assess the irritating effects of surfactants, the results did not agree with each other. The immersion test, which makes essentially the same use of surfactants, gave results in close agreement with those for sorption of sufactants or protein denaturation by surfactants.
Amounts of surfactants sorbed by hide powder.
Irritation score of immersion test : r=0.671.
Amounts of surfactants sorbed by keratin powder.
Irritation score of immersion test : r=0.930.
Per cent denaturation of OVA by surfactants.
Irritation score of immersion test : r=0.880.
Turnover times of the stratum corneum due to the surfactants were found to follow the order, AMT≤AGS≤L-Soap≤AP<LS≤ES.
Examination of the amounts of dandruff as observed when using AMT shampoo and ES shampoo, each with a different effect on the turnover time of the stratum corneum, showed the amounts to differ remarkably according to the surfactant used.
2. Influence of surfactants on hair.
The extent of disintegration of cuticle by a surfactant supersonic treatment was found to have the following order :
AMT≤AGS≤AP≤ES<LS<L-Soap.
Based on the above results, AMT can be a good surfactant as a detergent for the hair and scalp.

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