Sun Protection Factor is how much protection a sunscreen product offers against UV rays and sunburn.
SPF is measured by the amount of UV exposure it takes to cause sunburn while a person is wearing a certain level of sunscreen. The higher the SPF number, the greater the level of protection.
In general, a sunscreen with:
Dermatologist commonly recommend SPF 30 as the minimum needed for daily protection. When spending the day outdoors, it's recommended to use SPF 50. There is very little difference between SPF 50, and SPF 100 so you are safe with 50 (just don’t forget to REAPPLY!).
Protect yourself from both UVA and UVB rays by selecting not only the correct SPF but also a sunscreen with “broad-spectrum” protection. See our article to learn more about UVA and UVB rays here.