While we are often diligent about reapplying sunscreen throughout the day, it’s common to forget about our skin once the evening arrives. (Alamy Stock Photo)“If you still have sunscreen sitting on top of your skin overnight, that will clog your skin barrier, and can lead to little spots appearing,” says Rai. Check for sunburn(Alamy Stock Photo)“If you’ve got mild sunburn, then using things like aftersun and staying out of the sun, and putting on lots and lots of cooling, soothing moisturisers are going to help you,” says Rai. “Reapply this every three to four hours if you’re peeling after the sun to help your skin barrier get back to its normal level.” Hydrate(Alamy Stock Photo)“If you’ve been in the sun all day you have probably sweated out a lot of your electrolytes.