While many people believe higher SPF offers more protection, the difference in protection between SPF 30 and SPF 100 is small. SPF 30 blocks 97% of UVB rays, while SPF 100 blocks 99%. Experts recommend using sunscreen with an SPF of 30 or higher for any extended outdoor activity. However, choosing an SPF higher than 50 may not provide significantly more protection.
It is essential to choose a sunscreen that is broad-spectrum, meaning it protects against both UVA and UVB rays. Remember that sunscreen should be reapplied every two hours, especially after swimming or sweating.