Retinal ek vitamin A derivative hai jo skin mein retinoic acid mein convert hota hai. Yeh cell turnover ko boost karta hai, collagen production badhata hai, aur fine lines, uneven skin tone aur acne ko improve karta hai. Retinal usually retinol se zyada potent hota hai aur faster results deta hai, lekin slightly irritating bhi ho sakta hai beginners ke liye. Dry aur sensitive skin wale log slowly introduce karein aur SPF zaroor lagaein kyunki retinal sun sensitivity badha sakta hai.