How to scientifically prevent the sun, and how to avoid worrying about healthy sun protection?

Be sure to apply sunscreen spray when you go out every day. When you surf the internet, there are many useful things. Choose what suits you according to your skin, wear a hat and sun protection clothes. But the weather is very hot. I usually take an umbrella when I go out. If you ride a bike or arm yourself, it's still whiter to do a good job of sun protection than not to wear it. When there was an exam in high school, we would look at students with the same skin color, some with sunscreen and some without sunscreen. After a summer, they became whiter. I hope I can help you.