SPF 30 vs SPF 50: SPF 30 wins for daily use

SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98% — that extra 1% isn’t worth the higher cost or thicker feel. The real key is applying enough and reapplying, not the number. For daily commutes and lunch walks, SPF 30 is the sweet spot; save SPF 50 for all-day outdoor activities.