L-Cysteine

In the field of cosmetics：

Cysteine is used in the preparation of perms, sunscreens, hair growth perfumes and hair tonics.

In the field of medicine：

L-Cysteine is an amino acid antidote which is involved in the reduction process of cells and phospholipid metabolism in the liver. It can be used for radiopharmaceutical poisoning, heavy metal poisoning, antimony poisoning, and can also be used for hepatitis, toxic hepatitis, serum sickness, etc., and can prevent hepatic necrosis.