Oxothiazolidine (Otz-10), yani L-2-oxothiazolidine-4-carboxylic acid, ek cysteine prodrug hai jo skin cells ke andar convert hokar cysteine banta hai aur glutathione banane mein madad karta hai. Skincare mein iska use antioxidant ke taur par hota hai aur skin ko brighten karne ke liye helpful hai.