How it works: Beta hydroxy acids (including salicylic acid) work by exfoliating the skin. The true mechanism of action is not know, but it is thought to occur by decreasing the adhesion of skin cells possibly by

breaking up the "cement" that holds the cells together. Beta hydroxy acids are lipophilic (attracted to lipids/fats) and because of this, their action may be limited to the superficial epidermis (especially when compared to alpha hydroxy acids which may penetrate deeper in the epidermis and even the dermis). While treatment with beta hydroxy acids may not be as "aggressive", this may allow for less irritation when compared to the alpha hydroxy acids. In addition, beta hydroxy acids have been shown to possess anti-inflammatory properties.

Effectiveness: Beta hydroxy acids have been used over 2000 years and are successful for treating various skin conditions. Recent studies of newer formulations of salicylic acid (mostly 2% formulations) have shown rapid improvement and overall reduction of acne lesions while being gentle on the skin and well tolerated. Salicylic acid is a well accepted, successful therapy for acne, dandruff, pigmentation, and wrinkles.

Where to find it: Salicylic acid can be found in many products including those from MD Forte, Glytone, Peter Thomas Roth, Murad, and more...

Shop for products containing beta hydroxy acids (salicylic acid)