Vitamin C promotes collagen production, which has the potential to thicken the dermis, diminish fine lines, and is essential for firm, youthful skin. Vitamin C is an antioxidant, meaning it protects skin cells from damaging free radicals caused by UV exposure. It also inhibits melanin production in the skin, which helps to lighten hyperpigmentation and brown spots, even out skin tone, and enhance skin radiance. Vitamin C helps to repair damage from sun exposure and collagen loss by encouraging healthy cell turnover and regeneration