Clear glass used for windows in your home, office or automobile offers protection only from UVB rays, those that cause sunburn. Unless specially coated, glass offers no protection for UVA rays, which cause both aging and skin cancer. In addition, UVA rays penetrate glass year round no matter what the season leaving you exposed, even in the winter when you are less likely to wear sun screen.cell-0711676794,www.safetysecuritywindowtinting.co,.za