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Glycolic acid peels have been the leader in advanced skin treaments around the world for many years. These peels come in different concentrations varying from 10% to 80%. Glycolic acid is perhaps the best-known of a group of chemicals called fruit acids or alpha-hydroxy acids (AHA). AHA provides an excellent way to penetrate the surface of the skin, resulting in drastic imporvements of the skins appearence and feel. Glycolic acid works as an exfoliating agent because of its high acidity but easy solubility. Glycolic Acid goes under the damaged upper layers of skin and destroys the 'glue' which holds dead skin to the surface.