Vitamin C (ascorbic acid aur iska derivatives) ek powerful antioxidant hai jo free radicals ko neutralize karta hai aur skin ko damage se bachata hai. Collagen production ko boost karta hai jisse skin firm aur youthful rehti hai. Hyperpigmentation aur dark spots ko kaam karta hai isliye skin ka tone even aur bright hota hai. Usually serums mein use hota hai jisse skin ko UV rays se bhi kuch protection milta hai. Oily aur combination skin ke liye bhi theek hai.