How do you remove hard water spots from a mirror?

White vinegar on a cloth, pressed against the spots for 2-3 minutes, then wiped clean. Follow with glass cleaner.

Can you use vinegar to clean mirrors?

Yes, diluted white vinegar is an effective and streak-free mirror cleaner.

Weekly, or more often if toothpaste splatters and hairspray buildup are visible.

Using too much cleaner, a dirty cloth, or wiping in circles. Switch to a clean microfiber cloth with minimal cleaner.

Bathroom

Your bathroom mirror is one of the most-used surfaces in your home. Here's how to get it spotless and keep it that way.

1
Dust the mirror
Wipe with a dry microfiber cloth to remove dust and loose particles.
2
Spray glass cleaner
Spray Streak-Free Glass Cleaner across the surface. Don't over-spray -- a light even coat is enough.
3
Wipe in one direction
Wipe the mirror in straight horizontal or vertical strokes with a clean microfiber cloth. Don't wipe in circles.
4
Buff any streaks
Flip to the dry side of the cloth and buff any remaining streaks with light, quick strokes.

TIPClean mirrors with straight strokes in one direction, not circles. Circular wiping just moves smudges around.
TIPFor hairspray buildup, rub with a cloth dampened in rubbing alcohol first, then follow with glass cleaner.
TIPAfter showering, run cold water for 30 seconds to cool the bathroom air. This clears mirror fog faster.

XUsing paper towels, which leave lint fibers on the mirror surface.
XOver-spraying cleaner, which drips down and pools at the bottom edge, potentially damaging the mirror backing.
XCleaning a mirror with a dirty cloth, which just redistributes grime instead of removing it.

Use a clean microfiber cloth and spray glass cleaner onto the cloth (not the mirror). Wipe in straight lines, not circles.