Winter Hack: The Right Way to Defog a Windshield (Without Ruining It)

FAQ #2 – Do Spray-On De-Icers Actually Work?

Yes — spray-on defrosting solutions do work, and they can save you a lot of scraping time.

According to Larry Morrison of NAPA Auto Parts, you’ve got two main options:

  • De-icer you pour into the washer reservoir – this helps your washer fluid melt light frost and ice as you spray.
  • Aerosol de-icing sprays – these are more concentrated and go directly on the glass.

These products typically leave a thin moisture-repellent film on the windshield that makes it harder for condensation and ice to stick to the glass in the first place.

You can also use simple DIY mixes as a spray in a pinch. Common combos that work:

  • Rubbing alcohol + water
  • Pickle juice (salt + water) in a spray bottle
  • Vodka + water

Spray, wait a bit, then use your wipers or scraper to clear the loosened ice. Just remember: anything with salt or alcohol should be used on glass — not paint — and not every single day if you care about long-term finishes and rubber.

Bottom line: let your car’s AC and defroster do the heavy lifting, use de-icer for the stubborn stuff, and keep your hands off the inside of the glass. Your visibility — and your windshield — will be much better for it.