How it works: Alpha hydroxy acids are a group of acids derived from fruits, sugar cane, and mild that help the skin in many ways. The two main types of AHAs are glycolic acid and lactic acid. AHAs cause detachment of skin

cells allowing normalization of skin growth and smoother, less scaly skin. In addition, desquamation of follicles allows cleansing of pores and helps to prevent blocked follicles. While most short term use causes changes to the epidermis, long term use can have profound effects on the dermis including inceased collagen, elastin, and glycosaminoglycan (GAG) synthesis (all important parts of healthy, youthful appearing skin). This in turn leads to increaed hydration and skin thickness.

Effectiveness: AHAs have been studied extensively and have shown to improve many skin conditions including photoaging, acne, rosacea, brittle nails. In addition, the use of AHAs can help the penetration of other skin care products, increasing their effects. In general, higher percentages of a given AHA will produce a greater effect but may be slightly more irritating. It is always smart to start low, and then gradually move up in strength. In addition to the proucts available over the counter and through physician's offices and in our product center, AHAs are also the common ingredients used in higher concentrations in chemical peels.

Where to find it: AHAs are found in several products including Neostrata, MD Forte, Glytone

Shop for products containing glycolic acid and lactic acid