Buying sunscreen can be a daunting process. Should you get SPF 15 or SPF 70? Spray or lotion? Broad-spectrum, or the fun one that changes colors when it dries? Here's one way to save your skin and save your money: know that SPF doesn't make as big of a difference as you think it does. What does matter is how you use it.
Just a Number
Quantity Over Quality
What Does SPF Mean?
The Chemistry of Sunscreen
Key Facts In This Video
Sunscreens protect skin from UV light, which can damage skin cells and cause sunburn, moles, freckles, and wrinkles. 00:48
UV-B light is the primary cause of sunburn. UV-A penetrates more deeply, causing more long-term damage like wrinkles and age spots. Both can cause skin cancer. 01:02
SPF 15 protects the skin from 93% of UVB rays. SPF 30 protects it from 97%. 02:38
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