日本化粧品技術者会誌
Online ISSN : 1884-4146
Print ISSN : 0387-5253
ISSN-L : 0387-5253
頭皮頭髪の年代変化について
黒田 秀夫吉浜 桂一郎笹川 光子鈴木 正巳
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1993 年 26 巻 4 号 p. 254-261

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We investigated age differences of various parameters for hair and scalp skin in 153 healthy volunteers (13-69 years old, _??_: n=49, _??_: n=104).
Age differences were showed clearly in some parameters that were (1) cross sectioned area (_??_ _??_) (2) water content (_??_) (3) cystine content (_??_) (4) contents of trace elements (Ca) (_??_)- as for hair shaft, and (5) sebum content (_??_ _??_) (6) stratum corneum cell area (_??_ _??_)- as for scalp skin.
Parameters (1), (2), (3) and (5) decreased with age, and (4) and (6) ncreased with age.
Many relationships among various parameters were found by means of multi value analysis of the experimental data.
Some relationships suggested that hair follicle G6PDH activity and cystine content of hair shaft, played important roles in formation of hair structures and physical properties.
And, polar lipids contents of hair were found to decrease with damaging of hair.

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