Laser blemish removal is a normal process, because the principle of laser blemish removal is that the high energy laser beam acts on the deep pigment tissue to break up the melanin and then disintegrate and discharge it out of the body to achieve the effect of blemish removal, and the anti-blackening is a performance of melanin discharge out of the body. Generally, the anti-blackening time is 2-3 months, and the longest is 3-6 months, after the end of anti-blackening, the effect of spot removal can be more ideal. Once the anti-blackness occurs, you should take a positive attitude to deal with it, pay attention to not eating melanin-rich substances, such as chocolate, soy sauce, cola, etc., drink more water, eat a light diet, and eat more fresh vegetables and fruits, especially foods rich in vitamin C, such as kiwi, passion fruit, etc., which can accelerate the discharge of melanin. Try to avoid direct exposure of the skin to the sun to prevent ultraviolet light from causing stimulation to the wound, and also to ensure the cleanliness of the wound and not to use cosmetics indiscriminately. You can use some medical skin care products to help skin repair, such as oral vitamin C, vitamin E, tranexamic acid, topical hydroquinone cream, do vitamin C import, etc. At the same time, you can apply aloe vera gel or vitamin A ointment locally, all can help metabolism, so that the anti-black as soon as possible to eliminate.