Salicylic Acid, the only known BHA, decongests and purifies pores, being especially beneficial for oily or acne-prone skin types. The lowest strength formula gently lifts away dead skin cells, revealing a brighter, clearer and even-toned complexion. Simply soak solution onto one cotton round, sweeping over the entire face and neck. Let dry and follow with moisturizer and SPF during the daytime. Ideal for use biweekly, or once per week.