Effaclar Ultra Concentrated Serum is a gentle daily peeling serum for adult acne-prone skin and signs of aging. The renovated formula contains a complementary tri-acid complex with Salicylic Acid, Glycolic Acid and LHA to exfoliate the skin. This formula reduces marks left by acne and visible pores, refines uneven skin texture as well as reduces the look of aging such as fine lines. Tested on adult acne-prone skin. This serum also contains Niacinamide and La Roche-Posay Thermal Water.