SPF – Sun Protection Factor. Sunscreens are classified by the strength of their SPF, starting as low as 2 and going beyond 50. These numbers refer to the product's ability to deflect the sun's burning rays (UVB). SPF measures the time it takes to produce a sunburn reaction on protected skin compared to unprotected skin. Look for sunblock SPF 30, which blocks out 97% UVB rays.
UVB and UVA Rays: UVB rays are what people are most familiar with, since they are the cause of sunburn. Their intensity depends on the time of day, location, and time of year. However, the lesser known UVA rays can be extremely dangerous because they are present during all daylight hours, regardless of the temperature outside or the time of year. These rays also penetrate the skin deeper than UVB rays and are most commonly associated with aging and wrinkles.
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Forgotten Areas: Ears. Feet. Hands. Skin cancer is common in these areas since they are almost always exposed to the sun and are often times left out of the sunscreen application process. Add these areas to your daily routine!
We recommend wearing sunscreen everyday, try the HydraFacial™ UV Smart™ Daily. UV Smart™ Daily Sunscreen goes beyond basic sun protection providing broad-spectrum UVA and UVB protection! UV Smart™ Daily SPF 30 uses powerful zinc oxide to protect against damaging UV rays while antioxidants such as vitamins A, C, E, CoQ-10 & Green Tea Extract help to combat free radicals and environmental damage.
Want to know more, check out the Skin Cancer Foundation:
http://www.skincancer.org/
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