Acne marks are post-acne pigmentation. Acne marks on the back can be eliminated through medication and laser treatment. 1. Medication: For people with acne marks on the back, you can follow the doctor’s instructions for external use of compound heparin sodium allantoin gel, silicone gel and other medications, which can play a role in inhibiting and fading scarring, and help to eliminate the acne marks on the back. 2. Laser treatment: patients can also use laser treatment, selective photothermal effect on the local skin, the resulting high-energy laser can directly act on the affected tissues, and stimulate collagen newborn, to achieve the effect of eliminating acne marks. There are many ways to eliminate back acne marks, it is recommended to go to the hospital, under the guidance of the doctor’s treatment.