Acne marks on the back are commonly black acne marks, red acne marks, etc. They can be removed by local medication and physical therapy. 1. Black acne marks: you can use hydroquinone cream, azelaic acid and other drugs to reduce hyperpigmentation, inhibit melanin production, and promote the fading of acne marks. 2. Red acne marks: you can use fruit acid peeling treatment, this method can accelerate the epidermal cell shedding and renewal, can promote acne marks subside. You can also use intense pulsed light to shrink microvessels, eliminate inflammation, and fade acne marks. The same kind of disease, due to the different physical conditions of individuals, so the choice of treatment is not the same, if you want to remove back acne marks should be timely consultation, follow the doctor’s instructions for treatment, not indiscriminate use of drugs.