It takes about 3 to 6 months for the black mark left after laser spotting to fall off, the specific time is affected by many factors, and attention to strengthen nursing can help better recovery. When laser spotting, the thermal effect of laser will also stimulate some normal melanin cells, leading to the increase of melanin synthesized by melanin cells, resulting in the occurrence of black marks. It takes about 3 to 6 months for the black mark left after laser spotting to fade away, the specific time is related to the patient’s skin condition, skin metabolism function, personal constitution, post-care and other factors to a certain extent. If the skin condition is good and the skin metabolism function is strong, it usually takes about 3 months for the black marks to subside after laser spotting; if the skin condition is poor and the skin metabolism ability is poor, it usually takes 6 months or more for the black marks to subside after laser spotting. In addition, after laser spot treatment, attention should be paid to strengthening nursing care, which can help patients recover better, such as: after laser treatment, patients should pay attention to preventing water, avoiding infections; pay attention to strengthening sunscreen measures when going out, avoiding excessive ultraviolet irradiation; light diet, avoiding spicy and stimulating food, quitting smoking and drinking; ensuring sufficient sleep, avoiding late nights, etc. It should be noted that patients are recommended to go to the doctor for treatment of laser spotting, so that they can get enough sleep and avoid staying up late. It should be noted that patients are recommended to go to regular hospitals and beauty organizations for laser spot treatment to avoid adverse reactions.