It is a normal phenomenon that some people will have a re-tan period after laser blemish removal, which usually lasts for 3-6 months, but the specific duration is affected by many factors, such as the patient’s own skin color, sun protection measures, scab shedding method, etc., so it cannot be generalized. The duration of the re-tanning period is related to the patient’s own skin color, the lighter the color, the shorter the re-tanning time, the darker the color, the longer the re-tanning time; also related to whether to do a good job of sun protection, the better sun protection, the shorter the re-tanning time, poor sun protection, the re-tanning time is longer; also related to the natural shedding of scabs or artificial picking, natural shedding of the re-tanning time is shorter, sometimes in about 3 months to end, artificial picking If the scabs fall off naturally, the re-blackening time is shorter, sometimes it can end in about 3 months. After laser blemish removal, you should pay attention to the protection of the skin, especially during the anti-black period, you should pay attention to the local cleanliness of the skin and avoid eating spicy and stimulating food to avoid infection. Within 1 week after laser blemish removal, avoid getting water on the treatment area, avoid using cosmetics, pay attention to sun protection when going out, and prohibit exfoliating the treatment area and steaming sauna for 6 months.