Whats SPF?
“Sun Protection Factor.” The higher the SPF (though there’s no appreciable difference in protection in numbers above SPF 30), the better the sunscreen protects against UVB (the shorter length ultraviolet rays that are associated with sunburn and skin cancer). SPF only refers to UVB screening. If your sunscreen says “SPF 15” then you know that it provides fifteen times your natural protection against UVB (the cause of sunburn and skin cancer) but nothing about how well it protects you against UVA (the culprit behind wrinkles, photo-aging, and skin cancer). Headhunter surfscreens contain both FDA-approved UVA and UVB sunscreen filters for complete UVA and UVB protection. (The FDA is working on a UVA rating system.