By Kristina Vile, M.Sc. Molecular Biomedicin, AllergyCertified What is it? Salicylic Acid is an organic acid sometimes called a Beta-Hydroxy-Acid (BHA). It is probably best known as a compound that is chemically similar but not identical to the active component of aspirin (acetylsalicylic acid). salicylic acid occurs naturally in the bark of the willow tree, Salix […]