Zealous advertisers advocate sunscreen products with sun protection factors (SPFs) ranging from 15 to 100+. But how much of this is scientifically validated, and how much is spin-doctoring taking advantage of fearful and gullible consumers? Is an SPF of 100 really twice as good as one of 50, or even 30 or 15 for that matter? The short answer is no. The numbers do not compute that simply, as we will see.
Summer is here and we are all spending more time outdoors with our four-legged friends. This means that we must make sure they do not get too much sun and run the risk of sunburn or, worse, skin cancer.