What Is Etched Glass (Hard Water Damage)?
Quick answer
Haze that's worn into the glass itself. No cleaner can remove damage that isn't sitting on the surface.
Glass whose surface has been permanently altered by long-term mineral deposits or harsh cleaners. Etching looks like haze that no cleaner removes, because the damage is in the glass, not on it. Polishing compounds can improve it; prevention (a squeegee habit) is the real fix.
Fixes that use this
Bathroom
Remove Hard Water Stains from Shower Glass (What Actually Works)
Hard water stains come off shower glass with warm vinegar and dish soap, if the glass isn't etched. How to tell the difference and what works for each.
Time30 min Cost$4–$15 easy