Laser removal of melanin deposits generally does not leave scars, some patients with more severe conditions may have scars. Laser removal of melanin deposits generally does not leave scars. Laser is the use of the principle of high heat, in the skin for irradiation or burning, to remove the precipitated melanin in the skin or help melanin metabolism, if the patients pay attention to sunscreen after the operation, timely use of medication cold compresses to cool down the temperature, avoid staying up all night, eat more vitamin food to promote the skin’s recovery, the general will not appear the above symptoms. While some patients with more serious conditions, due to the treatment of a large area, or postoperative care measures are not done, such as exposure to the sun, eat spicy and stimulating food, etc., will lead to abnormal skin metabolism, tissue proliferation, long blisters, infections and other complications, resulting in skin lesions or inflammation, which in this case may leave scars. Therefore, it is recommended that after laser treatment, patients strictly follow the doctor’s instructions for postoperative care to avoid the above symptoms.