The redness of your face when exposed to the sun may be due to sunburn, or UV allergy, etc.
1. Sunburn: Prolonged exposure of the skin to the sun or too much light can lead to sunburn. Usually to protect the skin, try to avoid prolonged exposure to the sun, easy to skin sunburn people also avoid eating photosensitive food, such as fennel.
2. Ultraviolet allergy: the sun has ultraviolet rays, the people who are allergic to ultraviolet rays will have the symptom of redness when they are exposed to the sun, and the individual’s sensitivity to ultraviolet rays is related to the degree. This category of people usually life to do a good job of sunscreen, go out and use sunscreen appliances, apply mild sunscreen products, if necessary, can follow the doctor’s instructions to use glucocorticoid drugs, such as hydrocortisone cream and so on.
If the skin is itchy and swollen after sunburn, do not scratch, pay attention to good skin cleaning, try not to use hot water and alkaline cleanser to wash your face. It is recommended to go to the hospital if necessary, under the guidance of the doctor to deal with.