How to Remove Hard-Water Stains from Shower Glass, Step by Step

The safe way to strip mineral buildup — and the honest test for whether your glass is stained or permanently etched.

Southwest Florida water is loaded with dissolved minerals, and every drop that dries on your shower glass leaves a little of them behind. Here is how to remove the buildup safely — and how to tell when it is too late for cleaning.

Step 1 — Vinegar soak

Warm a 50/50 mix of white vinegar and water, spray the glass generously, and let it sit 10 to 15 minutes. Vinegar’s mild acid dissolves fresh mineral scale. Wipe with a microfiber cloth and rinse.

Step 2 — Baking soda paste for stubborn spots

Make a paste of baking soda and a little water, apply with a non-scratch sponge in circles, then rinse. The gentle abrasion lifts scale the vinegar loosened without scratching.

Step 3 — Repeat before you escalate

Heavy buildup often takes two or three rounds. Resist the urge to reach for anything harsher.

What never to use

• Abrasive pads, steel wool, scouring powder — they micro-scratch the glass, and scratched glass collects scale faster
• Hydrofluoric-acid "restoration" products — genuinely dangerous, and they can permanently haze tempered glass
• Razor blades on coated glass — they strip protective coatings

The fingernail test: stained or etched?

After cleaning, dry a section and look at it against the light. If white haze remains and the surface feels rough or your fingernail catches, the minerals have etched into the glass itself. Etching is permanent — no cleaner reverses it.

If it is etched

Replacement glass with a factory-applied protective coating starts you over with a surface that resists the buildup — and a two-minute squeegee habit keeps it that way. We will tell you honestly which side of the line your glass is on: 239-355-9696.