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α-Hydroxy Acid-Based Cosmetic Procedures
Reference:
Tung R, Bergfeld W, Vidimos A, Remzi B. α-Hydroxy Acid-Based Cosmetic Procedures: Guidelines For Patient Management. American Journal Of Clinical Dermatology [serial online]. March 2000;1(2)Available from: Academic Search Premier, Ipswich, MA. Accessed January 24, 2012.
Effects of alpha-hydroxy acids on the human skin of Japanese subjects: The rationale for chemical peeling
Alpha-hydroxy acid (AHA) agents, such as glycolic acid and lactic acid, have been used as therapeutic agents for more than a quarter of a century. Recently, they have been used as agents to rejuvenate photo-aged skin. It is believed that these AHA agents induce the epidermis to remodel and accelerate desquamation, thus exerting their therapeutic effects. In this study, we investigated the histological differences in skin treated with glycolic, lactic, citric and acetic acids once daily for 6 weeks. The melanin pigments in the basal layer were less prominent in the glycolic and lactic acid-treated skin than in the citric and acetic acid-treated skin. The melanin deposits in the horny layers were equal for all AHA. However, the melanin deposits in the squamous layers were less prominent in the glycolic and lactic acid-treated skins than in the citric and acetic acid-treated skins; this was analogous to observations of the basal layers. Collagen I and procollagen I were increased after treatment with glycolic, lactic and citric acid in the upper dermis, but were not increased with acetic acid treatment. However, the staining of the epidermis and dermis for matrix metalloproteinase-1 (MMP-1) after treatment was not significantly different among the agents. Our data suggest that longer treatment intervals with glycolic and lactic acid can cause improvements in both the epidermal and dermal components and support the usefulness of AHA for rejuvenating photo-damaged skin.
References:
Yuki YAMAMOTO, Koji UEDE, Nozomi YONEI, Akiko KISHIOKA, Toshio OHTANI, Fukumi FURUKAWA The Journal of Dermatology
Volume 33, Issue 1, pages 16–22, January 2006
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