ingredient 289

Lactic Acid/ 2-hydroxypropanoic Acid/ Milk Acid


A kind of fruit acid, which is extracted from milk. Most of the lactic acid in cosmetics is synthetic. It can break the connective substances between keratinocytes to achieve the effect of exfoliation, but it may also stimulate the mucous membrane and cause skin irritation. It is often used in skin products. It is slightly irritating. Some people will produce red spots after using it.


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