Sunburn
Suntan, Tan
noun, verbal noun
When the sun burns something, and that something is you, it's giving you sunburn.
The readings here are the vocab kun'yomi readings. You have ひ for 日 and や for 焼け (which you learned with the vocab). Combine it with some sunscreen and hopefully you'll prevent the sunburn.
ちゃんと日焼けケアした方がいいよ。
You should properly take care of your skin from sunburn.
ビーチにいすぎて日焼けしちゃった。
I got suntanned from being on the beach too long.
日焼け止めクリームを忘れたせいで、日焼けで真っ赤になった。
Because I forgot to apply sunscreen, I got sunburnt and turned completely red.