My older son had a training for sea rescue at beach. It was really hot today. The temperature was about 35 degrees and the sunlight was so strong. He said that he didn't wear sunscreen. He was crazy. Of course, he is suffering a terrible sunburn now. He called to my wife and asked how should he do. We are sorry, but we don't know. Just cooling the body, I think. He might learn the importance of using sunscreen on a day like today.