Vitamin C Serum is a skincare product that contains a high concentration of ascorbic acid, a potent antioxidant. It is commonly used to brighten the skin, reduce the appearance of fine lines, and improve overall skin texture. Many people apply it in the morning before moisturizer and sunscreen to enhance skin protection against environmental damage. This serum can help fade dark spots and even out skin tone, making it popular among those seeking a more radiant complexion. Regular use may also promote collagen production, which is essential for maintaining skin elasticity and firmness.