How to Wax a Bathtub. Even the best cared-for bathtubs will begin to show their age through normal wear and tear. Restore the dull surface of your aging tub by waxing it. You will return a sparkling sheen to your tub that will make it seem like new. Follow the suggestions below for buffing your tub.
Apply the car wax to the outer rim and sides of the tub as you would for a car. Rub it onto the tile walls and bathtub fixtures as well. Do not apply it to the bottom of the tub, since doing so will make it dangerously slippery.
Use a soft, clean cloth or an electric buffer to buff the wax after it has been applied. Work quickly to finish buffing before it has time to dry.
Repeat this process annually to keep your bathtub looking shiny and new.
Choose as an alternative to car wax a product such as Gel-Gloss that is made specifically to clean and shine tubs and showers. Follow the usage instructions on the package.