SPF measures protection against all of the sun's rays.
If you wear SPF, you can tan safely.
UVA rays are more damaging than UVB rays.
You don't need SPF if you're in the water.
SPF works as soon as you put it on the skin.
SPF 60 provides twice as much protection as SPF 30.
Since clothes have SPF, you can't get a sunburn through clothing.
Taking ibuprofen boosts the effect of SPF.
A hat and sunglasses provide enough SPF to protect your face.
Two layers of SPF 15 equals as much protection as SPF 30.
SPF. Sun Protection Factor. Three pretty small words, but they hold a lot of power. This little bit of information is listed on countless bottles of sunscreen on thousands of drugstore shelves all over the world. This information can help prevent sun damage and skin cancer when used properly.
scBut how do any of us know how to use it properly" If you're out there scanning the backs of bottles and still confused, take this quick quiz to gauge your understanding of SPF.
scAnswer True or False to the following questions: