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Field Notes

Glass & Mirror Cleaner

soap detergent
household glass-cleaner vinegar rubbing-alcohol unprocessed
Mix 1 min
Yield 16 oz spray bottle
Keeps 3–6 months
Storage sealed spray bottle
Notes Keep cap tight — rubbing alcohol evaporates. Store away from heat and open flame.

Ingredients

  • ½ cup rubbing alcohol (isopropyl, 70%)
  • ⅓ cup white vinegar
  • enough to fill a 16 oz bottle distilled water
  • 5–10 drops essential oil — optional — lemon or grapefruit work well. Keep to 5 drops max to avoid oily residue.

Overview

The secret to streak-free glass cleaning is simple: no soap. Soap leaves a film. This recipe uses rubbing alcohol and vinegar instead — the alcohol is a solvent that dissolves grime and evaporates almost instantly (no time to streak), while the vinegar cuts through mineral deposits and fingerprint oils.

This consistently outperforms commercial glass cleaners in side-by-side tests. It’s also about 10 cents per bottle versus $4–5 for a bottle of Windex.

Instructions

  1. Add the rubbing alcohol and vinegar to a spray bottle.

  2. Add essential oil if using (keep it to 5 drops — too much oil will leave residue on glass).

  3. Fill the rest of the bottle with distilled water.

  4. Cap and shake gently to combine.

How to Use

  • Spray the glass surface evenly.
  • Wipe with a microfiber cloth using a Z-shaped or S-shaped motion (top to bottom, working your way across). Microfiber is the key — it won’t leave lint like paper towels or cotton cloths.
  • For very dirty windows, spray and wipe once to remove the bulk of the grime, then spray and polish a second time for streak-free clarity.

Works On

  • Windows (interior and exterior)
  • Mirrors
  • Glass tabletops and shelves
  • Glass stovetops
  • Stainless steel appliances (spot test first)
  • TV and computer screens (spray the cloth, not the screen)
  • Car windows (ammonia-free, so it’s safe for tinted windows)

Tips

  • Use 70% rubbing alcohol, not 91% or higher. The 70% concentration actually cleans better because the higher water content helps dissolve dirt, while the alcohol still evaporates fast enough to prevent streaks.
  • Clean glass on a cloudy day or when the surface is in shade. Direct sunlight causes the spray to dry too fast, leaving streaks before you can wipe.
  • Distilled water prevents water spots. Tap water contains minerals that can leave a haze on glass, especially in hard water areas.
  • For stubborn mineral deposits on shower glass, spray straight white vinegar on the deposits and let it sit for 10 minutes before scrubbing with this cleaner.
  • Newspaper works as an alternative to microfiber for wiping glass — the ink acts as a mild polishing agent. Old-school but effective.
  • Flammable: Rubbing alcohol is flammable. Don’t spray near open flames, candles, or hot stovetops. Store away from heat sources.