It is logical to assume that products with SPF 30 would work twice as well as those with SPF 15. That is why so many concerned consumers go in search of the highest SPF ratings they can possibly find. While there are benefits that come with SPF 45+ products, they are less significant than you may realize. Before you pay a lot for skin protection you don't need, check out the facts below. How SPF Works SPF stands for sun protection factor, which is a measure of how well sunscreen protects your skin from harmful ... Read More