The natural AHA acid complex (orange, lemon, blueberry, sugarcane and sugar maple) exfoliates gently. Alpha-hydroxy acids rejuvenate cells and make skin smoother and more youthful. Prebiotics, proteins, babassu oil, mango butter, and hemp all help to nourish, regenerate, and rejuvenate the skin. LUMI AHA peel exfoliator has an ideal pH for the skin, 4. USE: once a week, apply an even, thin layer to damp skin with a soft brush and allow it to take effect for 15-20 minutes. Avoid the eye area. Reduce the time for sensitive, thin or couperose skin, starting from 5 to 10 minutes. It is important to monitor your skin and check its reaction.