Acne on the left temple, if it is acne, you can use adapalene gel, retinoic acid ointment; if it is folliculitis you can use topical mupirocin ointment, erythromycin ointment and other antibiotic drugs. 1. Acne: It is related to the exuberant secretion of androgen in the body, hyperkeratosis of hair follicles, and propagation of Propionibacterium acnes. You can use topical adapalene gel, retinoic acid ointment and other medications, which can inhibit the secretion of hair follicles and prevent hyperkeratosis. 2. Folliculitis: It may be infected by external bacteria, which may cause inflammatory reaction of hair follicles leading to acne on the left temple. You can use mupirocin ointment, erythromycin ointment and other antibiotic medication. The left temple acne, suggest timely medical treatment, the drug needs to be used under the guidance of a professional doctor.