Glycolic Acid is part of the group of active compounds known as alpha hydroxy acids (AHAs) and is derived from sugar cane. Glycolic Acid is widely used in skin care because of how effective it is for treating fine lines, and dull, sallow skin. Recent scientific evidence shows that Glycolic Acid can also rejuvenate the nail. Removal of surface damage rejuvenates the nail, to reveal a beautiful, healthy, youthful lustrous shine. This is the first nail treatment product to incorporate Glycolic Acid. The essential exfoliation it provides also allows the nail to effectively absorb the super hydrating ingredients in Step 03: Deep Hydrating Formula.