CeriGlass is a unique glass polishing system developed by the innovative technique of blending special ceramics (which include Cerium Oxide) together with other nano components and mild abrasives to create the most user friendly and still effective glass polishing system! CeriGlass deep cleans and polishes all glass surfaces with ease. It quickly removes acid rain spots, hard water spots, road film, and stubborn bird stains. It is also capable of removing fine to medium windshield wiper/grit scratches and swirls! And it does all this without warping the glass.