Tetrahydrodiferuloylmethane (tetrahydrocurcumin) ek hydrogenated form hai curcumin ka jo skincare mein use hota hai. Yeh colorless hota hai aur bahut zyada stable antioxidant hai. Free radicals ko neutralize karta hai aur skin ke fine lines ko kam karne mein madad kar sakta hai. Melanin formation ko bhi inhibit kar sakta hai jisse dark spots aur uneven skin tone mein improvement aa sakti hai. Oily aur acne-prone skin ke liye bhi theek hai kyunki yeh inflammatory properties bhi rakhta hai.