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How To Choose The Best Sunscreen
Not all suncreens are created equal. Learn how to choose a better sunscreen.
UVA
95% of the UV radiation we are exposed to is of this kind.
Always present, even on cloudy days and penetrates glass.
Causes premature skin aging, wrinkles and skin cancer.
What is used in tanning salons at 10X the normal dose.
What does SPF mean and how can I tell if my sunscreen is any good?
SPF(Sun Protection Factor) – Is a measure of the protection from UVB radiation only. It only tells us how much longer it will take for skin to burn compared to if we did not use it at all.
Example: SPF 15 means that it will take 15x longer for your skin to burn (turn red, blister etc) under the same conditions that it would normally take to burn without sunscreen.
SPF 15 - blocks 93% of the sun’s UVB rays, SPF 30 - blocks 97% of the sun’s UVB rays SPF 50 - blocks 98% of the sun’s UVB rays
But what about UVA?
There is no consensus right now on a rating system for UVA protection in North America. Quite a few sunscreen products do NOT protect against UVA radiation very well. OK, so which sunscreen should I choose?
The best suncreens contain Zinc Oxide which protects well against both UVA and UVB radiation. Choose a sunscreen that has at least an SPF rating of 30 although 45 is ideal. Remember that the best sun protection can be avoidance at peak times.
DermMedica Kelowna Vein & Skin Solutions Suite 200, 1626 Richter St (Downtown beside Safeway)
UVB
Causes most of the reddening and burning after sun exposure.
Very important in skin aging and non- melanoma skin cancers. Highest levels between 10am-4pm.
Reflects well off of water and snow (up to 80%), but does not penetrate glass.
DermMedica is an Accredited Medical Facility by the College of Physicians and Surgeons of BC
Phone: 250.868.3070
www.DermMedica.ca 6 |
YLW.KELOWNA.CA
Kelowna Vein & Sk in Solut ions Serving Kelowna Since 1994
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