Tag Archives: sunscreen and spf

What Does the SPF of Sunscreen Really Mean?

SPF is only one factor in choosing the right sunscreen. Other important factors include: Buying a non-oil based sunscreen, Looking for antioxidants added. Blocks both UVA & UVB radiation

SPF measures how long you can stay in the sun before you will turn red from sunburn. An SPF of 25 means you can stay out in the sun 25 times longer than if you did not use sunscreen before you will burn

SPF of 25 blocks 96% of sun’s rays while an SPF of 50 blocks 98% (just 2 percent more) – In other words, higher is not significantly better

UVA radiation is the cause of sunburn, but UVB is what is linked to melanoma (the most dangerous kind of skin cancer)

Always look for a sunscreen that blocks both UVA & UVB radiation