New in Box La Roche Posay Mela B3 Dark Spot Serum 1FLOZ Mela B3 Dark Spot Serum With Melasyl+ Niacinamide This anti-aging serum visibly reduces a range of skin discoloration, including sunspots, age spots, post-acne marks (or post-inflammatory hyperpigmentation), and even the most persistent dark spots. Powered by Melasyl™, the newest, exclusive La Roche-Posay ingredient, in combination with 10% Niacinamide. A first-of-its-kind discoloration treatment to visibly correct persistent dark spots with long-lasting results, while respecting the natural tone of all skin. Proven on all skin tones.