How to Remove Hard Water Stains from Shower Glass

To remove hard water stains from shower glass, spray the glass with a 1:1 mix of white vinegar and warm water, let it sit 10 to 15 minutes, then scrub with a damp non-scratch pad and rinse. For stubborn mineral buildup, make a baking soda paste, work it in with a soft cloth, and squeegee dry after every shower to stop stains from returning.

What you'll need

White vinegar (distilled)
A clean spray bottle
Baking soda
A non-scratch scrub pad or soft-bristle brush
A microfiber cloth and a second dry cloth
A small squeegee (the single best tool for a rental bathroom)
Rubber gloves
A bucket or the sink for warm water

Step by step

Open the window if yours opens, or run the bathroom fan. In a small NYC bathroom, vinegar fumes concentrate fast, so get airflow going first.
Mix equal parts white vinegar and warm water in the spray bottle. Warm vinegar cuts mineral film faster than cold.
Spray the glass generously, top to bottom. Let it dwell 10 to 15 minutes so the acid can loosen the mineral deposits. Re-spray if it dries out.
Scrub in small circles with the damp non-scratch pad, focusing on the cloudy waterline and the corners where spray collects.
For spots that won't lift, sprinkle baking soda onto a damp cloth, or mix it into a thin paste, and rub the stain directly. The mild grit does the work without scratching.
Rinse thoroughly with clean warm water. Any leftover residue will dry back into a haze.
Squeegee the glass dry, then buff any streaks with the dry microfiber cloth.
Going forward, squeegee after every shower. Ninety seconds a day beats a 45-minute scrub every month.

What NOT to do

Do not use vinegar or any acid on natural stone thresholds, marble, or travertine trim around the glass. Acid etches stone permanently, and in an older Manhattan building that surround may be original. Skip abrasive powders and steel wool on the glass itself, which leave fine scratches that trap even more mineral haze. Don't mix vinegar with bleach or any chlorine cleaner, ever. And avoid letting acidic cleaner sit on metal frames, hinges, or chrome hardware for long stretches, as it can dull or pit the finish. Test any cleaner on a hidden lower corner first.

When to call a pro

If the glass stays cloudy after a thorough vinegar treatment, the minerals have likely bonded into the surface or the glass was never sealed, and no amount of home scrubbing brings back full clarity. Etched glass, corroded frames, and mold creeping into old grout are past the point of a spray bottle. That's also true if you're prepping for a move-out inspection and want the whole bathroom to read as spotless for your landlord. When DIY stops paying off, book apartment cleaning with CleanWhale and hand the deep bathroom work to someone with the right supplies and time.

FAQ

Why does my shower glass get cloudy if New York City water is soft?

NYC tap water is relatively soft, around 1.6 grains per gallon, so heavy mineral crust is less common here than in hard-water regions. But even soft water leaves some residue over time, especially when soap scum mixes in and dries on the glass. Squeegeeing after showers keeps it clear.

Can I use a commercial descaler instead of vinegar?

Yes. A store-bought lime and scale remover often works faster on set-in deposits. Read the label, follow the directions exactly, and make sure it's rated for glass and for your frame material before you spray.

How often should I deep-clean the glass?

If you squeegee daily, a full vinegar treatment once a month is usually plenty. If you skip the squeegee, you'll likely need it every week or two to stay ahead of the haze.

Will lemon juice work the same as vinegar?

Lemon juice is also acidic and can lift light mineral spots, but it's stickier and needs a careful rinse. For a full panel of glass, distilled white vinegar is cheaper and easier to spray evenly.

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