A powerful glass polishing product - Cerium Oxide. If you notice that the windows on your auto have scratches from the wipers, a polishing paste and a little effort will make your windows much more beautiful. Cerium Oxide is such an abrasive that removes the top damaged layer from the surface. It is applied very simply - you add a little water to the powder so that it becomes a paste, take a rag and polish intensively. There is white powder - gentle and red powder - harder.