Unlike Alpha Hydroxy Acid (AHA), Beta Hydroxy Acid (BHA) is oil-soluble and can penetrate pores to clear up acne and help prevent future breakouts. The most common form of Beta Hydroxy Acid used in skin care products is Salicylic Acid which, in addition to helping clear problem skin, chemically exfoliates to help transform the look of rough skin and improve smoothness.
Peter Thomas Roth products with Beta Hydroxy Acid:
Anti-Aging Cleansing Gel
Goodbye Acne Max Complexion Correction Pads
Peptide Skinjection Exfoliating Peel Pads