Mela B3 Serum is an intensive anti-dark spot concentrate that targets dark spots, including persistent ones, and helps stop them from coming back. It combines the patented Melasyl with 10% niacinamide (vitamin B3) and La Roche-Posay Thermal Spring Water. The lightweight serum suits all skin types and tones and all types of dark spots, such as post-acne marks and sun spots. Use it with daily sun protection.