Resurface the skin and eliminate the factors that create acne deep within the hair follicles before they start with this clinically tested combinations of glycolic acid and salicylic acid. BHA/AHA Clarifying Astringent (10% glycolic acid and 2% salicylic acid) is recommended for oily and acne skin types. If dryness occurs, discontinue use for one week and follow with a 50% reduction in use the next week. If over dryness occurs again, dilute product with wit cotton round and continue until dryness is no longer an issue.