What is the difference between SPF 30 and SPF 50?

SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks approximately 98%. The difference in protection is minimal, but SPF 50 offers slightly more coverage against sunburn. Both should be reapplied regularly for effective sun safety.

Key points:

  • SPF 30 and SPF 50 provide different levels of UVB protection.
  • The increase in protection from SPF 30 to SPF 50 is small.
  • Both SPFs require regular reapplication for maximum effectiveness.
  • Higher SPF can encourage longer sun exposure without reapplying.

This text has been fact-checked for accuracy by medino's clinical team.