La Roche-Posay Mela B3 Serum is an intensive anti-dark spot treatment featuring the patented Melasyl™ active ingredient and 10% niacinamide (vitamin B3). This lightweight gel-serum helps brighten skin, reduce hyperpigmentation, and prevent future dark spots while providing gentle hydration. The serum contains La Roche-Posay's thermal spring water and features a unique peach-colored gel-serum texture that absorbs quickly without stickiness. It is formulated to be hypoallergenic, alcohol-free, and non-comedogenic, making it suitable for sensitive skin. The formula helps fade post-acne marks and post-inflammatory hyperpigmentation (PIH) while providing moisturizing and soothing benefits. It's particularly effective for those prone to pigmentation caused by sun exposure, aging, or post-acne marks.