The effect of pulsed light on pigmentation needs to be judged according to the individual situation and the severity of the pigmentation. For relatively mild pigmentation, the effect of pulse light is more obvious. However, for serious pigmentation spots, it may take several treatments before the effect is obvious. Pulse light pigmentation removal is to use light to irradiate the skin, selectively destroying the pigment cells in the dermis layer and breaking down the substances in the cells, so that the effect of pigmentation removal can be achieved. Pulsed light will selectively act on pigment cells and will not affect other cells while destroying pigment cells. Pulsed light is safer, with shorter recovery time and no obvious adverse reactions. After pulse light spot removal, the skin is relatively delicate, you can wash your face with water appropriately, but you should avoid excessive rubbing, avoid the use of stimulating cleansing milk, and pay attention to not using cosmetics, and exfoliating products in a short period of time, so as to prevent the stimulation of the face from swelling and aggravation of the situation. After the removal of spots should pay attention to sunscreen, minimize the time to go out in the daytime, you should use sunscreen with low sunscreen multiples, repeat the application in 2-3 hours to avoid hyperpigmentation.