The red marks appear after the scabs fall off and usually recover gradually in about 1 month. After the scabs fall off, the local inflammation has not completely subsided, and the inflammation causes capillary dilation, thus showing local redness. As the skin tissue repairs itself, the capillary dilation gradually improves and the red marks gradually fade away, which takes about 1 month. The red marks that appear after scabbing try to reduce contact with thermal stimulation, cold stimulation and ultraviolet light to avoid causing capillary dilation, thus affecting the repair process of red marks. In addition, patients can also choose to use some topical skin care products with repair functions or topical drugs, which will help the red marks fade as soon as possible. Some of the red marks may produce hyperpigmentation after fading, which is post-inflammatory pigmentation and can fade on its own later.