How to apply sunscreen

They don't seem to know how to apply sunscreen as well as they think.

First, sunscreen should be applied 20 to 30 minutes before going out, considering the absorption time into the skin. Also, if the skin is continuously exposed to sunlight, reapply sunscreen every 2 to 3 hours to maintain its effectiveness. It is essential to apply sunscreen from 10 a.m. to 2 p.m., when the UV rays are the strongest.