Easy Porcelain Renewal .If you have a porcelain kitchen sink, even though it's "clean," it's been beat up.Use it for the bathtub too.. Barkeepers Friend Liquid rubbed into the porcelain with a magic eraser
How To Clean an Old Porcelain Enamel Bathtub or Sink — Apartment Therapy Tutorials
cleaning porcelain sinks or bathtubs (wet sink and then sprinkle with baking soda; dip sponge in small bowel w/hydrogen peroxide and scrub; let it set 15 minutes and then rinse; repeat; rinse completely and dry w/towel; option: wipe sink and faucet w/lemon oil, then wipe dry)
Inverno is an unbeatable value, grey marble style, wall and floor tile. It is a glazed porcelain with a matt finish. This creates a strong, durable tile with greater slip resistance. Because of this it is ideal for bathrooms, kitchens and hallways.