What SPF level is best for most people?

SPF 50 is the sweet spot for most people. The difference between SPF 50 and SPF 100 is roughly 1% more UVB blockage (98% vs. 99%), which isn’t worth the extra cost or false confidence. Reapplication matters more than starting strength — use a shot glass worth every two hours, and prioritize water resistance and broad spectrum protection over a higher number.