Get rid of blemishes no matter your age or skin type with this effective acne fighting formula. With consistent use, you can overcome the challenge of acne vulgaris for an acne-free complexion. 10% (normal to oily skin) is good for severe acne and also for acne on the back and chest. 5% (dry to sensitive skin) is good for moderate acne. Sulfur (for oily skin) has anti-inflammatory properties and provides additional therapeutic action.