1. Cool Water
Sunburn is technically inflammation of the skin and one of the simplest ways to treat inflammation is to cool down the inflamed area.
So, an effective way to ease sunburn right away, even when you’re outside, is to jump in the water, be it a stream, lake, or ocean. Immersing in and out of the water throughout the day can prevent your sunburn from getting worse.
Remember to be wary of pools because they contain chlorinated water, which can increase your skin’s irritation. Also, avoid directly applying ice when your skin is burning, even though it looks appealing, as it could actually cause even more damage.