Ceramic coating is a layer of polymer that is applied to the surface of your wheels that essentially fills in and imperfections or grooves in your paint. This creates a seamless and smooth barrier that helps prevent things like corrosion from salt and discoloration or pealing or paint from UV rays and oxidation. Ceramic coating can be applied to all types of wheels and wheel finishes. Matte, satin-textured, polished, glossy, machine finish, or powder-coated, painted all can be ceramic coated.