La Roche Posay Pure Niacinamide 10 Serum Anti-Dark Spot Repairing Concentrate 30MlThis anti aging niacinamide serum clarifies skin discoloration and rebalances the look of uneven skin tone with visible results starting in one week. This formula, with 10% Niacinamide, visibly reduces discoloration, post acne marks (also called post inflammatory hyperpigmentation), and even stubborn dark spots to reveal a brighter, more even complexion.