You can choose to use laser to remove pigment spots, and the 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. Moreover, only diseased cells absorb specific laser, while normal skin tissue will not be damaged, so laser pigment spot removal will not leave scars.