Adolescent back acne can be cleaned by using sulfur soap, can maintain a light diet as well as the use of medication. 1. Sulfur soap cleaning: sulfur soap contains hydrogen sulfide, pentachlorosulfonic acid and other substances, can achieve the role of sterilization and oil control, so puberty back acne usually use sulfur soap cleaning to improve the symptoms of acne. 2. Keep a light diet: puberty back acne is mostly due to endocrine dysfunction, excessive oil secretion, hair follicle clogging and other phenomena, so we should reduce the secretion of oil through a light diet, avoid spicy and stimulating diet. 3. Medication: You can use Vitamin A ointment, Adapalene ointment and other medications, these drugs can soften keratin, kill Propionibacterium acnes, dissolve acne, so as to achieve the effect of acne treatment. Try not to pick at back acne with your hands and keep the local hygiene dry and clean. The above medications should be used under medical supervision.