Cell Fusion C Toning C Dark Spot Serum is a powerful brightening serum designed to reduce the visibility of dark spots and hyperpigmentation while enhancing radiance and skin tone. 3-Day C Serum Packed with a powerful blend of Vitamin C derivative, Niacinamide, and Antioxidants to help reduce the appearance of dark spots and hyperpigmentation for a more even skin tone. Radiant & Even Tone Enriched with Vitamin C and 4% Niacinamide to help diminish the appearance of dark spots while promoting a radiant, even skin tone. Clinically proven to improve dark spots and blemishes. Protect & Firm Packed with antioxidants including Ferulic Acid, Tocopherol, and Ascorbic Acid to combat free radicals, environmental aggressors, and sun damage—helping prevent premature signs of aging. Intense Hydration Allantoin and Beta-Glucan deeply hydrate and plump the skin.