Sun redness is an acute sunburn reaction caused by ultraviolet light stimulating the skin. After sunburn, the recovery time varies depending on the severity of the sunburn and the body type of the individual. In case of scarring, the recovery time will be longer. Typically, mild sunburns generally take 2-3 days to recover gradually. More severe cases take 1 week, or even more than 1 week. If it is more severe, it will take at least about 2 weeks. Once the sunburn, you need to pay attention to the following points to help recovery: 1, hydration and moisturizing, timely replenishment of water, can speed up skin metabolism, the use of hydration mask or hydration spray, drink more water, etc.; 2, in the sunburned parts of the application of aloe vera juice to reduce the redness of the skin, soothe inflamed skin, prevent skin peeling after sunburn; how long does the skin sun red recovery normal 3, in order to prevent the skin sun red, tanning, and even blistering, in When the ultraviolet rays are particularly strong in summer, you need to avoid staying in the sun environment for a long time after 9 am and before 4 pm when the sun’s ultraviolet rays are particularly strong; 4. If an allergic reaction occurs, you need to promote skin recovery through treatment, such as the use of anti-allergy drugs and glycocorticoid medication.