The Exfoliating Serum with patented natural acids*** 1.5x more effective* than salicylic acid, for a refined skin texture from 10 days**. The exclusive acid duo formed by lactic and succinic acid helps reduce imperfections, pores and marks. Glutamic acid provides a sebum-regulating action to reduce excess sebum. Its formula is enriched with Avène Thermal Spring Water to soothe, strengthen and rebalance the skin. Dedicated to sensitive skin and tested on acne-prone skin, the A.H.A Exfoliating Serum contains only 10 ingredients and 99% of ingredients of natural origin. Frequency of use 1 to 2 times a day Apply once or twice a day, morning and/or evening to clean, dry skin on the face, neck and décolleté, avoiding the eye area. Alone or combined with your skincare routine.