greenroomsurfer Beach Fanatic May 21, 2008 #1 For all of you that think sunblock works read this. http://environment.about.com/od/healthenvironment/a/sunscreen.htm IMO only 10 feet of conrete or 2ft of lead stop light rays gamma rays radiation etc.
For all of you that think sunblock works read this. http://environment.about.com/od/healthenvironment/a/sunscreen.htm IMO only 10 feet of conrete or 2ft of lead stop light rays gamma rays radiation etc.