Difference Between SPF 30 and SPF 50
SPF 30 and SPF 50 offer good protection against UVB rays, the difference in UVB blocking is relatively small.
SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks around 98%.
The extra 1% protection from SPF 50 might be noticeable for individuals with fair or sensitive skin.
And those spending extended periods in the sun, or those with a history of skin cancer.
Skin Type
Fair or sensitive skin may benefit from the extra protection of SPF 50.
Sun Exposure
If you plan to spend a significant amount of time in the sun, SPF 50 might be a better choice.
Reapplication
Both SPF 30 and SPF 50 need to be reapplied every two hours or after swimming or sweating, regardless of the SPF level.
UVA Protection
While SPF primarily measures protection against UVB rays (burning), look for broad-spectrum sunscreens that also offer protection against UVA rays