2885-79-2

It is used as a reducing agent for hair in permanent waves. It does not damage the hair (as thioglycolic acid does); it is nontoxic, and does not harm the eyes or the mucous membranes.

N-Propionyl-L-cysteine is used as a reducing agent for hair in permanent waves. It does not damage the hair (as thioglycolic acid does); it is nontoxic, and does not harm the eyes or the mucous membranes.