Salicylic acid is a ß-hydroxy acid (BHA) used for its keratolytic and comedolytic properties. Oil-soluble, it exfoliates the surface of the skin and can penetrate epidermal lipids and sebaceous secretions. This characteristic makes it an especially effective ingredient to treat acne. It dries and helps clear up acne pimples and allows skin to heal. It deeply cleanses pores and eliminates blackheads, which tightens pores and makes them less visible. Its antibacterial action helps reduce acne-causing bacteria. It also reduces inflammation and redness.