The redness of the face may be related to environmental factors, allergic dermatitis, excessive skin cleansing. 1. Environmental factors: when the weather is dry, the skin will have abnormal peripheral vasoconstriction and diastole, if you do not do a good job of skin care treatment, it will lead to redness and peeling of the surface of the skin on the face. 2. Allergic dermatitis: If the face is in contact with allergic substances or the use of cosmetics containing allergic substances, it is easy to stimulate the skin surface, resulting in the phenomenon of redness on the face. 3. Excessive skin cleansing: If the skin on the face is cleansed excessively, such as washing the face many times a day, the oils on the surface of the skin may be washed off, losing moisturization, resulting in redness and peeling of the skin on the face. When the patient appears face skin redness, should immediately go to the hospital dermatology consultation, clear cause of the disease in the doctor’s guidance to give the appropriate treatment.