When there are no symptoms of infection after needle clearing, the red marks usually fade within 1~2 weeks with scientific care. Needle clearing is a dermatological treatment for acne, in which professional medical staff use sterile instruments to puncture pimples, papules, nodules, etc., and squeeze out the secretions, a process that requires strict aseptic operation to prevent infection, and special attention is paid to avoiding self-needle clearing. Don’t wash your face on the day after needle clearing to avoid infection caused by water quality problems; take sun protection measures such as playing umbrellas when you go out to avoid direct sunlight; eat a light diet and avoid spicy, stimulating and greasy food; ensure enough sleep and avoid staying up late; if improper care leads to redness, swelling and pain, anti-infection medication can be used according to the doctor’s instructions. Acne and other needle clearing treatment will leave damage in the local area, accompanied by tissue edema and local capillary hyperplasia, visually light red. If you follow the above measures of scientific care, its red marks will gradually subside, the specific is also related to the degree of local damage, generally will subside in 1 ~ 2 weeks. It is recommended that patients go to regular medical institutions for needle clearing treatment, and pay attention to scientific care after treatment to avoid infection and accelerate local skin recovery.