La Roche-Posay Effaclar Serum is a concentrated anti-imperfection treatment designed for adult acne-prone skin. This powerful serum combines exfoliating acids with soothing ingredients to reduce blemishes, refine skin texture, and provide anti-aging benefits while being gentle enough for sensitive skin. The serum contains key active ingredients including glycolic acid for cell renewal, salicylic acid for pore unclogging, LHA for gentle exfoliation, and niacinamide to reduce inflammation and strengthen the skin barrier. It is dermatologically tested, non-comedogenic, and free from parabens, silicones and sulfates. For best results, apply in the evening to clean, dry skin. The formula is specifically developed for those aged 25+ dealing with adult acne and signs of aging.