Microdermabrasion is a treatment method in which thousands of tiny aluminum trioxide polycrystals are instantly produced by a microdermabrasion machine and guided by a vacuum sealed system to impact on the surface of uneven skin scars at high speed to smooth out the scars and bring back the glory of the skin. Since the microcrystal particles are small and uniform, when rubbing with the scar and other tissues, its surface is bonded with the abraded tissue debris and tissue fluid, so that the original angles of the crystal are blunted, thus the polishing will not be too deep, easy to control, and the effect is better. Its indications: 1, acne scar left behind by acne; 2, uneven and softened scar after facial trauma; 3, pigmentation spots and uneven skin tone caused by sun damage; 4, small wrinkles on the face; 5, age spots; 6, enlarged pores. Before treatment: Ensure that the skin is free of rashes, sunburn and other irritations. A neutral cleanser should be used to cleanse the face before grinding. After treatment: A shallow wound will be produced on the operated area, which will dry and scab in about 1 day and form a thin layer of scab, which will fall off on its own in about 7 days and generally has no effect on study and work. It is best not to wash your face on the first day after surgery. After surgery, you must pay attention to sun protection, avoid going to a polluted environment, and eat more dark vegetables and fruits. There is no limit to the number of treatments, generally 1-2 times to see the improvement effect. The skin should be allowed some recovery time after each treatment, and it is recommended that the second grinding be performed at an interval of 1 month after the first grinding. Our experience of microdermabrasion in the past 10 years: microdermabrasion is more effective in treating facial acne scar and uneven scar.