Laser is usually able to remove acne marks completely, but the degree of acne marks of each patient is different, and there are differences in personal constitution, so if you want to remove acne marks completely, the number of times you need to use laser may be different. Laser belongs to a kind of physical treatment, can be injected through the local laser way to use the laser’s thermal energy to act on the acne mark area, smash the melanin cells under the skin, to achieve the effect of removing acne marks. In case of depressed acne marks, carbon dioxide laser grinding can be used to flatten the depressed acne marks. Generally, it takes 3~5 times of laser treatment to remove acne marks completely. If the acne marks are too dark or accompanied by depressed scarring, it may take several laser treatments to remove the acne marks. If you want to remove acne marks, patients are advised to go to the hospital for consultation and choose the appropriate treatment.