Laser scar repair is to use laser to stimulate the depressed parts, promote the formation of collagen and elastic fibers, and thus regenerate the skin, so the effect of laser scar repair is safe and reliable. After 2-3 days of treatment, the scab usually falls off naturally after 7- 10. There will be slight erythema or pigmentation after the scab falls off, but it will gradually disappear. Generally, the interval is 4-6 weeks, and the average recovery rate can reach 80-90% after treatment for about 5 times.