Sunscreen can be confusing. SPF involves math and science and you probably just want to sit on the beach and enjoy the sun. If you’re overwhelmed by all the different types of sunscreens, or simply just don’t get what is printed on the bottle, don’t worry–it’s easier to understand than you might think. We took the most basic questions about suncare and broke them down. When should you wear sunscreen? How often should you reapply it? What the heck does SPF even stand for? Just flip through the slideshow and you’ll never cluelessly apply sunscreen ever again.