Made of silicon dioxide, a ceramic coating is a type of clear semi-permanent auto body protection. It won't guard against stone chips or scratches but it will protect your car's exterior from things like tree sap, bird droppings, and bug guts. Unlike car wax, a ceramic coating creates a tough bond with the surface of the vehicle, so it doesn’t need to be applied as often. You can use it on top of paint-protection film or a vehicle wrap as well as on wheels, trim, and glass. In fact, it’s particularly useful on the windshield, as ceramic coating has hydrophobic qualities, causing water to form beads and slide off the surface.