Salicylic acid is one of the most common ingredients ... says Dr. Rambhia. It's part of a class of acids called beta-hydroxy acids (or BHAs) and is known for its ability to help exfoliate the ...

Glycolic acid and salicylic acid are two popular skin care ingredients. They’re available in many over-the-counter (OTC) products, including facial cleansers, serums, and toners. Both ...