Sunscreen is for Sunburn Prevention, Not Daily Use

... possible, isn't a good idea for several reasons. For one, chemical sunscreen blocks your body's ability to produce vitamin D, one of the most important hormones in your body. According to Vitamin D researchers, 90% of your vitamin D come from UVB ...

http://www.prweb.com/releases/Sunscreen/BaseTan/prweb11067448.htm