La Roche Posay Mela B3 Dark Spot Serum With Melasyl + Niacinamide

La Roche-Posay Mela B3 Dark Spot Serum is a 30 ml concentrated treatment for pigmentation, built around Melasyl paired with niacinamide. Melasyl is the ingredient that distinguishes it — a pigment-targeting molecule La Roche-Posay developed to intercept melanin before it is deposited in the skin, which means it acts on how dark spots form rather than only exfoliating away the ones already there. Niacinamide supports it by calming the underlying inflammation that drives pigmentation. As a serum it is the most concentrated format in the range, so it is the step to use if marks are your primary concern rather than a secondary one. It works across the full spectrum of pigmentation — sun spots, melasma, post-acne marks and general unevenness — and is formulated to be suitable for deeper skin tones, where many brightening products cause irritation and therefore more pigmentation. Apply a few drops to clean skin morning and evening before moisturiser. Daily sunscreen is non-negotiable, as UV undoes the progress. Results build over eight to twelve weeks.