Effaclar Ultra Concentrated Serum is a gentle daily peeling serum that targets adult acne-prone skin and early signs of aging. This serum contains a complementary tri-acid complex of salicylic acid, LHA and glyolic acid to gently exfoliate the skin. This synergy of dermatological actives works to visibly reduce pores and marks left by acne, refine skin texture and reduce fine lines. Also formulated with niacinamide (vitamin B3) and La Roche-Posay Thermal Water for optimal tolerance. Tested on acne-prone skin. Non-comedogenic.