The first serum with a highly concentrated 3.5% formula [vitamin C* + niacinamide + salicylic acid) to reduce discoloration in just 6 days and release the skins natural glow. The 3.5% formula is based on effective active ingredients known for their properties that reduce discoloration and add radiance to the skin. Confirmed effectiveness: After 3 days: skin looks more even and smoother. After 6 days: Visible discoloration is reduced. After 56 days: -43% visible discoloration**. This product is suitable for all skin types and colors. Dermatologically tested. *Vitamin C derivative - a formula with one of the most stable derivatives of vitamin C. It is less susceptible to decomposition as a result of oxidation or high temperatures, ensuring the effectiveness of the serum. It reduces discoloration, brightens and has anti-wrinkle properties, revitalizing the skin day after day. **Clinical test, 74 volunteers, average result for acne discoloration; results may vary.