This Theraderm exclusive, water-based product contains 2 fl oz of 10% non-buffered lactic acid, which has been shown to more effectively stimulate new collagen and elastic fiber production with less irritation than other alpha-hydroxy acids. Because lactic acid is found naturally in every cell in our bodies, there is no toxicity! The Fruit Acid Exfoliant's special formula gently exfoliates and refines the skin, producing an invigorating, fresh feeling. This effective exfoliant allows the outer layers of dry skin to release and shed over a few days, stimulating new cell growth in the skin's deepest layers. Your new cells are rounder, more elastic, and more youthful, leaving your skin wonderfully radiant and healthy.