SPF savvy

What does SPF mean?

SPF stands for “sun protection factor.” The SPF number on a sunscreen’s label is a guide to the product’s level of sunbun protection.

Basically, the SPF number indicates how much longer you can be exposed to the sun before getting a sunburn with a sunscreen compared to without a sunscreen. For example, it would take you 15 times longer to burn with an SPF-15 sunscreen than without.

Things you should know

• The SPF number indicates the level of protection provided against sunburn, which is caused mainly by UVB rays.
• For protection against UVB and UVA rays, look for the words "broad spectrum" on the product label.
• An SPF-30 product does NOT provide twice the protection of an SPF-15 sunscreen. As a general rule:
• SPF-15 = approximately 93% protection against the sun's burning rays
• SPF-30 = approximately 97% protection against the sun's burning rays
• SPF-60 = approximately 98% protection against the sun's burning rays

Which SPF is right for you?

The Canadian Dermatology Association recommends using a product with a minimum SPF of 30. That being said, your choice of SPF also depends on your skin type, your local UV index and the length of time you plan to spend in the sun. The chart below may help.

If this describes you or members of your family	and the following conditions apply	choose
- Very fair skin - Blue/hazel eyes - Blond/red hair Always burn, never tan - Fair skin, blue eyes Burn easily, tan poorly	- UV index: High/extreme (6-11) - Extensive outdoor exposure (pool, golf, beach, ski, etc.) - Outdoors from 11:00 a.m. to 4:00 p.m.	SPF 50+
- Darker white skin Sometimes burn, usually tan - Light brown skin Burn minimally, tan easily	- UV index: Moderate (3-5) - Limited outdoor exposure	SPF 30+
- Brown skin Rarely burn, tan darkly easily - Dark brown or black skin Never burn, always tan darkly	- UV index: Low (0-2)	SPF 15+

Note: To ensure sunburn protection against both UVA and UVB rays, look for the words "broad spectrum" on the product label.