Methods for treating acne vulgaris are disclosed. The treatment includes topical application of a dermatological composition containing an avermectin compound to the affected areas of a patient alone, or in conjunction with other conventional methods of treating acne vulgaris. The dermatological composition contains an avermectin compound in a pharmaceutically acceptable carrier, including water, glycols, alcohols, lotions, creams, gels, emulsions, sprays, soaps, body washes, facial cleansers, and facial masks.