Refinishing a Bathtub or Sink | Got a vintage pink bathtub?! Is your white porcelain sink stained or discolored? Rather than incurring the hassle & cost of replacing costly bathroom fixtures, you can refinish them yourself to a bright white finish that will last. Tough as Tile™ finish by Homax is a durable, long lasting coating to brush or spray onto your bathroom sink or tub for a look good as new. Click to learn tips and tricks from Homax® to help make tough bathroom home improvements.