The alcohol-free AHA 7 Whitehead Power Liquid by cosrx fights skin impurities using 7% AHA (glycolic acid) without causing dryness. Therefore, it is ideal for use on all skin types, including dry skin. Alpha hydroxy acid (AHA) stems from Pyrus malus water that is obtained from malic acid. The exfoliating effect of AHA buffs away dead skin cells and removes excess sebum in a gentle way. The result is clearer, more radiant-looking skin. Application: Use after cleansing in the morning and in the evening. Apply a small amount of liquid to the areas of the face that are prone to impurities using a cotton pad. Avoid the eye and mouth areas. Follow with an SPF in the morning.