Redness of the face after sun exposure may be due to sunburn caused by exposure to the sun. You can use cold compresses and topical medications to improve the symptoms. 1. The redness after sunburn may be due to prolonged face stimulation caused by local sunburn, congestion and edema symptoms, you can promptly carry out cold compresses, ice compresses in the process of need to keep the wound dry, pay attention to prevent infection. 2. You can apply local sunburn cream and other drugs to relieve. 3. If the local redness and itchiness may be due to cholinergic urticaria, you can use antihistamines, such as diclofenac tadalafil and other drugs under the guidance of a specialist. 4. usually should pay attention to sunscreen, external sunscreen. If facial redness does not improve with daily care, it is recommended that the patient go to a regular medical institution in time to avoid delaying treatment.