Sunscreens

Our tests of more than 70 sunscreen lotions, sprays, sticks, and lip balms show that you can’t always rely on the sun protection factor (SPF). That number is a measure of protection from ultraviolet B radiation, which is the chief cause of sunburn and a contributor to skin cancer. We also tested for protection against ultraviolet A rays, which tan and age skin, and also trigger skin cancer. We found more than a dozen sunscreens that did well enough against both UVA and UVB to recommend.