Similar to removing hard water from the toilet, baking soda and vinegar will rid your sink of these stains. Mix equal parts of baking soda and water and stir until a paste forms. Mix a solution of 1 cup water and 1 cup vinegar.
Sprinkle baking soda or Borax directly on the hard water stain in your sink, then spray on the same vinegar and water solution you used on the bathtub. Let the cleaners sit for 15 minutes, then scrub with a soft brush or sponge. (Remember to wear gloves when cleaning with Borax.)
If your sink requires a more intense clean, we've found that Method kitchen cleaner spray is the best way to give your ceramic sink a tough clean to remove those stubborn marks. For best results, use a soft cloth and spray the solution around your sink, rinsing and repeating if necessary to give a thorough clean.
Final Verdict. The best overall hard water stain remover is CLR Brilliant Bath Foaming Action Cleaner. It was highly effective at giving our kitchen and bathroom surfaces a shiny and smooth finish, without requiring a lot of hard scrubbing.
Baking Soda
Hard water stains on ceramic tile can be frustrating. The minerals leave behind residue that makes even the most expensive tiles and grout look cheap. To fix the problem, apply a baking soda and water paste to the affected areas. Allow this natural cleaner to penetrate the stain for a few minutes.
Hydrogen peroxide: Using hydrogen peroxide removes not only hard water stains but also soap scum. "Apply the solution to the area you are cleaning and let it sit for 15 minutes. Once that is complete, carefully scrub with a brush you have on hand," says Dills.
For stubborn water spots that refuse to budge, you may need to resort to light polishing. Choose a mild polishing compound specifically designed for use on ceramic coatings. Apply a small amount to a microfiber applicator pad and work it into the affected area using gentle circular motions.
This formula works miracles and is so much more efficient than your typical glass cleaner. It restores the “sparkle” to your glass shower doors, and works effectively to remove everything from soap scum, hard water deposits, mildew, mold, and buildup from minerals like calcium and lime.
STEP ONE: WET YOUR MAGIC ERASER.
Water activates the tough micro-scrubbers, so they can dig deep and remove hard water stains from glass and the toughest soap scum, making cleaning shower glass easier than ever.
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.
For harder to clean stains on ceramic/fireclay sinks, we recommend using an equal-parts water and bleach solution or non-abrasive cleaner. Always rinse your sink thoroughly after cleaning and dry with a soft dry cloth to restore its original shine.
Mix equal parts white vinegar and water. Apply the solution to the stain, let it sit for a few minutes, and scrub with a soft cloth. Create a paste with lemon juice and baking soda. Apply it to the rust stain, let it sit, and scrub gently.
Calcified hard-water stains, or limescale, can be particularly stubborn. To effectively remove them, soak the affected area in white vinegar for 15-20 minutes, then scrub with a brush.
A fast and easy way to remove water marks, grease or soap scum deposits, is with Coloured Sink Cleaner, or with a proprietary bathroom cleaner such as Ajax or Flash liquid spray.
Don't Use Them On Your Car
Or any other delicate surface, for that matter, like silverware, glass, or metal surfaces. Dry erasers have the abrasiveness of a 3000 grit sandpaper – very fine, but can still mar shiny surfaces – like your stainless steel appliances!
It really depends on what kind of cleaning you need to do. If you're dealing with really tough, built-up mineral deposits, especially in your bathroom or kitchen, CLR might be the way to go. It's strong enough to handle stains that vinegar might struggle with.
Does WD-40 remove hard water stains from glass? Yes, WD-40 can loosen hard water stains on glass by breaking down the mineral deposits. However, after using it, you must clean it off thoroughly, or else it will leave behind an oily residue.
Apply liberally, let sit for 10 minutes, scrub with a sponge, and rinse with a damp cloth. Spray directly on soap scum, wait 10 minutes, scrub with a brush, and rinse off. Soak a cloth in the solution, wrap around the fixture for 15 minutes, then rinse and dry.
Specialized Tools and Techniques: To keep shower glass clean, hotels use soft cloths to dry the glass after each cleaning session, preventing water spots. For tougher grime, a mixture of liquid dish soap and baking soda can be applied, especially in the shower door tracks, where buildup is common.
Does vinegar harm ceramic coating? As vinegar is an acid, it can eat away at your car's clear, glossy finish, eventually dulling it.
Dish soap will not remove ceramic coating, however, you should never use household detergents on your car.