How to defog car windows without air conditioning or rags: the homemade method that works in seconds

and does not depend on the vehicle’s air conditioning. It is based on a simple principle: to balance the humidity and temperature between the interior and exterior of the car through cross ventilation.

The procedure is as follows:

I barely opened one window, preferably one of the rear ones, leaving a small crack.
Turn the heating on to the lowest possible level, without activating the air conditioning.
Direct the airflow towards the windshield so that the temperature of the glass stabilizes.
Wait a few seconds: the humid air will begin to escape through the crack and the steam will disappear.