Tetrahexyldecyl Ascorbate ek stable aur oil-soluble vitamin C derivative hai jo skin mein penetrate karta hai aur ascorbic acid mein convert ho jata hai. Yeh antioxidant protection deta hai, collagen synthesis ko support karta hai, aur hyperpigmentation ko kam karne mein madad karta hai. Oily aur combination skin ke liye accha hai kyunki oil-soluble form hai. Daag-dhabbo aur uneven skin tone ko improve karne mein helpful ho sakta hai. AM routine mein use kar sakte ho, lekin SPF zaroor laga dena kyunki vitamin C sun sensitivity badha sakta hai.