10. You’re applying it in the wrong order.
Just like putting on socks before shoes, you need to put on moisturizer before sunscreen and to create a canvas for your makeup. Some experts think applying sunscreen as the top layer provides the best protection—though keeping your maquillage intact may be a challenge.

11. You’re not waiting long enough after initial application before going out in the sun.
Chemical sunscreens typically take 20 to 30 minutes to fully absorb into your skin. That last minute spray before stepping into the water provides no protection at all. Since it’s not absorbed, it will quickly wash right off. So put on your suit, apply sunscreen, and take your time filling up the cooler (with healthy drinks of course!).