You can choose laser to remove pigment spots. The treatment time is relatively short, no more than ten minutes at most. After each treatment, the skin must undergo a metabolic process. For this reason, the interval between laser pigment spot removal treatments is usually 3 months. The principle of laser pigment spot removal is that different types of lasers produce different colors of light, and a laser of a certain wavelength is only absorbed by pigments of the corresponding color. Therefore, the plastic surgery agency uses a laser to generate a strong beam of light to make the pigment disappear, so as to achieve the purpose of removing pigment spots.