In other words, the higher the SPF value of the product, the more sunburn (and therefore damage) protection it offers. According to the Food and Drug Administration (FDA), this number is a measure of how much UVB radiation it takes to burn your skin when it’s slathered in sunscreen compared to the amount of UVB radiation it takes when you’re unprotected. But what the heck does it really mean? Is higher always better? You’ve probably seen those three letters sprawled across sunscreens, moisturizers, and even makeup.
What does the SPF number on sunscreen labels mean?
