How do you fog up car windows for privacy?
Run your heater in fresh air mode whenever possible to bring dry outdoor air in and avoid humidity building up. If the weather and your situation allows, leave the car parked with the windows open on a sunny winter day. Water will evaporate out of the fabrics and even ice and snow will sublimate a little.
How do I stop my car windows from fogging up without heat?
Apply Shaving Cream to Your Windshield’s Interior
Use a dry, clean towel to wipe shaving cream across your windshield’s interior, then use a second towel to remove the shaving cream from the windshield. This creates a protective film on the inside of your windshield that helps prevent fogging.
Why does my car fog up when parked?
The main reason for a parked car to have fogged-up windows is the trapped moisture inside. It can happen if the sunroof drain is clogged. A damaged or missing door vapor barrier, a leaking heater core, or windshield may also cause extra moisture in the vehicle which can fog up the inner side of the windows.