Photorejuvenation can get rid of melanin. Photorejuvenation to get rid of melanin is mainly through the selective photothermal effect of laser on the skin, different wavelengths of laser will irradiate the epidermis and dermis respectively, so that the laser selectively acts on the pigment particles, and then the melanin particles will be broken down, so that they can be better metabolized and discharged through the lymphatic circulation, which will help to remove the melanin precipitation. However, due to the different physique and condition of each person, its treatment effect varies, and it usually takes several times to achieve satisfactory results. In addition, it is also necessary to pay attention to the postoperative sunscreen and local skin care, so as not to affect the therapeutic effect. Patients are advised to go to the hospital for a face-to-face consultation, and adopt corresponding and appropriate treatment plans according to the doctor’s advice after diagnosis.