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Lactic Acid
2-hydroxypropanoic Acid, Milk Acid
Molecular Weight: 90.08 Cas No:50-21-5
Buffering agent; Humectant; Skin conditioning; Astringent
[1] 張麗卿,『我就是化妝品化達人』,健行出版社,2007/04/10。

Lactic Acid 的 cas no:為50-21-5沒錯
但79-33-4這個編號在歐盟認證的網頁上
http://ec.europa.eu/index_en.htm
找不到這編號

Natural products avoid to use Lactic acid.

在黑色素合成之後,加速皮膚更新

Reference:藥妝品學 Cosmeceuticals, 2nd edition

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