The elimination time of red marks after blemish removal is related to the type of laser, dosage and individual skin condition, etc., and cannot be generalized. Laser blemish treatment uses the instant energy of laser to eliminate the melanin inside the blemish. The red marks produced after laser blemish removal will gradually fade away in about 1 month, so that the skin will return to its normal state. However, when the color of the spots is deeper, the epidermal trauma or scar may be formed after laser spot removal, and the recovery time will be relatively longer, usually about 3 months, and even half a year for serious cases. During this period, patients can take oral vitamin C to reduce pigment reflux. In addition, after the formation of red marks patients also need to pay attention to skin care, through cold compresses, external application of epidermal growth factor, medical anti-inflammatory mask and other methods to make the red marks fade as soon as possible, while doing a good job of sun protection, hydration and other measures to prevent hyperpigmentation.