Thioctic acid (alpha-lipoic acid) ek powerful antioxidant hai jo sulfur contain karta hai. Ye skincare mein free radicals ko fight karta hai aur skin ko healthy rakta hai. Best cheez ye hai ki ye dono water aur fat mein dissolve hota hai, isliye poora skin penetrate kar sakta hai. Oily aur dry dono skin types ke liye theek hai.