I have had really good luck with the mr. clean magic eraser or a spray product called mean green tub and tile cleaner.
Old bathtubs are typically made of materials such as cast iron, porcelain enamel, or acrylic.
The body when making teeth. Factories making iron bathtubs.
Stainless steel is more resistant to stains,particularly rust stains,than white and enamel on the GE JP202.
Never Dull works well with some elbow grease.
the production of enamel for bathtubs, stoves, refrigerators, and metal signs, and as an agent for ensuring brilliance and clarity in the manufacture of glass.
Porcelain bathtubs are durable, easy to clean, and resistant to stains and scratches. They also have a smooth, glossy finish that adds a touch of elegance to the bathroom.
Tea stains teeth with prolonged usage while sodas break down the enamel of the teeth.
The main ingredient in soda that stains teeth is chromogens, which are pigment-producing substances. These substances can stick to the enamel of your teeth and cause discoloration over time. Additionally, sodas are acidic, so they can also weaken the enamel, making it easier for stains to set in.
Stains in an enamel bath may be able to be soaked out. Bleach on a cloth applied to the stain can lessen the stain and may get rid of it. An abrasive cloth such as a "Magic Eraser" may do the trick as well.
You can try using a mixture of baking soda and hydrogen peroxide to gently scrub the bleach stains on your tub. Alternatively, you may also consider using a commercial cleanser specifically designed for removing stains in bathtubs, following the manufacturer's instructions carefully.
Quartz and onyx (minerals), marble and granite (stones), are popular surfaces for sinks and bathtubs. Ceramic, porcelain enamel, stainless steel, copper, glass, soapstone, nickel, concrete, resin, terrazzo, polyester, and wood such as pine, mahogany, bamboo, or elm are also widely used.
Since an enamel bath tub may scratch, it's best to use gentle cleaning methods. To remove limescale and many types of other stains and deposits, soak the affected areas with vinegar, then wipe off with a sponge. Hydrogen peroxide will also help many kinds of stains.