Does higher SPF mean better protection?
While higher SPF sunscreens do offer more protection against UVB rays, the increase in protection is not proportional to the increase in SPF number. For example, SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98%. No sunscreen can block 100% of UV rays, and high-SPF sunscreens may lead to a false sense of security and less frequent reapplication. SPF 30 to SPF 50 is generally sufficient for most people, provided it's applied generously and re-applied regularly.
See More Related Questions About Sunscreen
