Myth No. 1: It’s fine to tan as long as you don’t burn. A sunburn is certainly more harmful than a simple tan, but any extended exposure to the sun can be harmful, regardless of your skin tone.
Myth No. 2: An umbrella will completely protect you from the sun. Though an umbrella will go a long way toward keeping your skin safe during a day at the beach, the sand still reflects 17 percent of UV radiation. Wear sunscreen in addition to staying in the shade.
Myth No. 3: You don’t need sunscreen on overcast days. False! About 80 percent of the sun’s rays still pass through on cloudy days, so you still need sunscreen.
Myth No. 4: The sun can’t pass through windows. Glass filters out some UV rays, but not all. Be especially cautious if you or your passengers are exposed to the sun on a long car ride.
Myth No. 5: You need sun exposure to avoid vitamin D deficiency. Extended exposure isn’t necessary—your body will get enough vitamin D from food, multivitamins, and minimal time in the sun.