Salicylic Acid is one of the most popular and effective anti-acne active ingredients in the market today. It's a beta hydroxy acid (BHA) which acts as both a keratolytic and comedolytic agent. As a keratolytic, it softens and loosens the keratin , a major component that makes up the outer layer of the skin. Loosening of keratin causes the top, usually dead layer of the skin to slough off and and allows new skin to surface. As a comedolytic, it helps to dissolves the comedones (acne are comedones), open clogged pores, and allows the pores to "breathe" by allowing oxygen in. When oxygen gets inside the pores, it neutralizes the acne-causing bacteria , thereby eliminate the acne formation. Once the inflammation subsides, salicylic acid constricts the diameter of the pores, making them appear smaller. This Salicylic Acid 20% Gel Peel, 30ml (Professional) banks on the effectiveness of salicylic acid. It promises to be an effective acne solution by completely treatin...