How Sunscreen Works
July 13, 2012
Washington, D.C. – Everyone needs some sun exposure; it’s our primary source of vitamin D, which helps us absorb calcium for stronger, healthier bones. It doesn’t take long for most people to get the vitamin D they need.
Too much exposure to the sun’s rays can cause skin damage, eye damage, and immune system suppression.
[youtube]http://www.youtube.com/watch?v=cC-d9ZsnLds&[/youtube]
