How to Stop Car Windows from Steaming Up

How to Defog your Car Windows, Learn how to defog your windows. I test RainX and home remedies to see what works best. I use RainX, shaving cream, baby shampoo, potatoes, and hand sanitizer to see which ones really work to defog your windshield. For SCUBA diving, I use baby shampoo and old timers mention potatoes, but I think I will be using shaving cream for now on!