Ceramic coating is a liquid polymer that, when applied to the exterior of a vehicle, bonds with the finish and protects it from certain types of damage. Very much like wax, ceramic coatings form a layer between your car’s finish and the elements preventing UV damage and oxidation as well as stains caused by chemicals. It also has to be applied by hand. Where ceramic coatings differ from waxes and polishes is that it is more difficult to apply than a wax and it lasts a whole lot longer.