Acne is acne, acne marks in black is usually acne inflammation left melanin deposits, can be under the guidance of the doctor through medication, photorejuvenation, laser surgery and other methods to help eliminate acne marks. 1. Medication: If the acne marks are mild and small in scope, 0.025% to 0.1% retinoic acid can be used externally to lighten the acne marks, and the systematic medication of oral vitamin C and vitamin E can also lighten the acne marks. 2. Photorejuvenation: Photorejuvenation is the use of specific broad-spectrum color light (intense pulsed light), directly irradiated on the skin surface. It penetrates into the deeper layers of the skin and selectively acts on the melanin of the skin to achieve the therapeutic purpose. 3. Laser surgery: fractional laser surgery, can stimulate the skin, promote tissue renewal, so as to lighten the acne marks. In daily life, you should develop good habits, do a good job of facial cleaning, avoid sun exposure, eat as little as possible high-sugar food, medication should be used under the guidance of a doctor. If the acne marks are large in scope or cannot fade away for a long time, you can go to the hospital or regular beauty institutions for treatment.