Effects of Topically Applied Glycolic Acid (GA) on the Sensitivity of Human Skin to UV-Induced Damage.
Glycolic acid (GA), an alpha-hydroxy acid, (AHA) has been widely used in a large number of cosmetics products for daily use over long periods of time (Andersen, 1998). Sustained by the quest for a youthful appearance, the use of AHA's in skin care products has increased dramatically in the last decade. These products claim to reduce wrinkles, spots and other signs of aging (Van Scott, 1989). There is little information available to date about their long-term effects. One of the important question relates to the acute and chronic effects of AHA's on the sensitivity of human skin to sun exposure. This study was conducted to investigate the effects of GA, applied in a cosmetic formulation, in modifying UV-sensitivity, and to determine whether the effect was reversible after discontinuing GA applications.
KeywordsCellulose Surfactant Ethyl Lactate Common Salt
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