Question: what to do when you have a severe sunburn?
Answer: Take frequent cool baths or showers to help relieve the pain. ... 
Use a moisturizer that contains aloe vera or soy to help soothe sunburned skin. ... 
Consider taking aspirin or ibuprofen to help reduce any swelling, redness and discomfort.
Drink extra water. ... 
If your skin blisters, allow the blisters to heal.