La Roche Posay 10% PURE NIACINAMIDE SERUMThis 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.