This page shows you a very simple and inexpensive way to stop frost from occuring on any windscreen, including the windscreen of a car.

  1. Take a spray bottle and fill it with a 1 to 1 mixture of water and hand sanitizer.
  2. Shake the bottle mix up this anti-frost solution.
  3. Spray the solution evenly across the windscreen. If there is already some sort of buildup of ice or frost on the windscreen, a slightly heavier spraydown of the solution will cause the ice or frost accumulation to melt as well as prevent frost build up in the future.

You can click the link below that shows a video of how to prevent frost on a windscreen. Even though the video specifically targets the windows of a home, the same instructions can be applied to prevent frost on a windscreen ...