Pumice. A naturally occurring volcanic rock, pumice stones can be used to remove rust, especially from porcelain, since it won't scratch or damage the surface. Simply wet the rusty surface and the stone, and then rub it gently over the surface to remove the rust.
We recommend using a 50/50 solution (equal parts of CLR Calcium, Lime and Rust Remover and warm water) into a glass or porcelain bowl. Apply solution to the affected stained areas of the glasses using a damp cloth or sponge. After 2 minutes, rinse thoroughly with cold, clean water.
INSTRUCTIONS: TO CLEAN TUBS, TOILET BOWLS, SINKS, PORCELAIN, CEMENT, STUCCO and BRICK: Mix equal amounts of CLR and warm water. Apply directly to calcium, lime or rust with brush, cloth or sponge. Rinse promptly with cold clean water. If stain does not disappear, use CLR full strength, wipe and rinse promptly.
The good news is that you can remove rust from your bathroom quickly and easily with WD-40 Multi-Use Product. Yes, the same one you've probably used to lubricate the hinges on the bathroom door. Just spray a little on the rust stain, wait a few minutes and start scrubbing with a mild abrasive.
THE FIX: Hydrogen peroxide
Apply it with a soft sponge to the offending stain. Let the paste dwell on the ceramic or porcelain surface for one or two hours. Scrub down the stain with a stiff-bristle brush.
Use on most bathroom surfaces including: porcelain, ceramic tile, shower doors, sinks, bathtubs, white grout and caulk, toilet bowls, and fiberglass. Will not remove rust. Do not use on vinyl, natural stones, mirrors, plastic laminates, wood, fabrics, painted, coated or sealed surfaces, colored grout or wall coverings.
For cleaning and sanitizing, the CDC recommends a dilution of one cup of bleach to five gallons of water. Diluting bleach decreases the alkalinity and is safe for regular use on all types of porcelain and ceramic tile surfaces.
The brown stain is from a large amount of iron in your water. It is closely related to simple rust that you see on metal, which is iron oxide. Your water probably comes from groundwater that filtered through rocks containing iron-rich minerals on its way to the well.
The stains appear most often in homes located in hard-water areas, where the combination of minerals and iron bacteria in the water can cause rust particles to cling to the porcelain or enamel surfaces of bathroom fixtures.
Things to Avoid
Stay away from products with bleach or ammonia because they can change the tile or grout coloring. If you need to scrub your floors, make sure not to use any brushes with hard bristles since they can scratch the porcelain surface.
Do not use cleaning products that contain acids or ammonia (and other harsh chemicals) as these can damage grout and glazed surfaces of the tile. Choose products that are compatible with your grout to avoid damage or discoloration of the grout. Always dry your porcelain thoroughly after cleaning.
A baking soda and vinegar solution is perfect for cleaning a porcelain sink and removing stains. Make a paste out of the two ingredients and use a soft-bristled brush (such as an old toothbrush) or cloth and your finger, to apply and scrub the stained area.
For white porcelain only, bleach can be used to remove stains; never use chlorine bleach in colored or vintage porcelain, as it can damage the finish. For both white and colored porcelain, liquid oxygen bleach—such as hydrogen peroxide—is a good alternative.
Repair a Porcelain Sink with Epoxy Putty
Just as before, be sure to clean and dry the affected area. Cut the appropriate amount of epoxy putty and knead it (wearing gloves) for roughly one minute, or until it becomes malleable and has a uniform color. Be sure to apply epoxy putty within 2–3 minutes of mixing it.
First, a mixture of half a cup of white vinegar and a half cup of water will help. Dip a cloth into the solution and rub away the stain. The solution should then be rinsed off and dried to prevent damage to your sink's finish. Another solution is to use a small amount of baking soda and water on a toothbrush.
Hydrogen peroxide, the active component of oxygen bleach, gives baking soda an added punch to clear any yellow stains. For antique or colored porcelain, hydrogen peroxide and oxygen bleach are the most effective household cleaners for tough stains.
Bar Keepers Friend even removes food buildup and knife marks from porcelain, ceramic, glass dishes, and serving ware. From floor to ceiling, Bar Keepers Friend leaves your kitchen shining. You'll quickly learn why we're the best kitchen cleaner!
Is Comet safe to use on Corian, Formica, porcelain, fiberglass and stainless steel. Yes. Comet Cleansers, Comet Soft Cleanser and Comet Bathroom Sprays are all safe to use on these surfaces.
For white porcelain only, bleach can be used to remove stains; never use chlorine bleach in colored or vintage porcelain, as it can damage the finish. For both white and colored porcelain, liquid oxygen bleach (such as hydrogen peroxide) is a good alternative.
Many homeowners ask if Magic Erasers® can be used on porcelain or if they will damage ceramic tile. The good news is that they can be safely used on ceramic tiles and porcelain, so you have nothing to worry about if you plan on using them this way.
White vinegar costs less than the common store-bought cleaners, but can still effectively disinfect any surface without leaving a chemical residue. Cleaning floor tiles with vinegar is safe, as long they are porcelain or ceramic.
Cleaning Rust With Lemon Juice
Cut a lemon in half. Dip it in salt. Scrub the rust with the wedge. You can also create a mixture of 1 cup of lemon juice and a tablespoon of salt.
Just a simple mixture of baking soda and vinegar will take away all gunk and stains that you could throw at your sink. I suggest making a paste in the sink, so you can best gauge how much you need, but just sprinkle baking soda over the entire bottom surface then drizzling a light amount of vinegar over top.