Melatonin ek hormone aur bahut powerful antioxidant hai jo topical use ke liye skin par lagaya jata hai. Yeh free radicals ko neutralize karta hai aur skin ke natural repair process ko support karta hai, khaas kar UV se aane wale oxidative stress se bachane mein helpful hota hai. Isko aksar dusre antioxidants ke saath combine kiya jata hai skincare routine mein ache results ke liye.