Why Does the Outside of the Glass Fog Up?

[CarmenRose]

The fogging of the windshield is caused by the significant temperature difference between the inside and outside during winter. Here are some solutions for defogging car glass: 1. Use an anti-fog agent: Spray a small amount of defogging agent on the car window and wipe it clean. While polishing the glass, it forms a thin transparent protective film that effectively prevents the condensation of moisture on the glass, thus avoiding fogging. 2. Utilize air convection: Due to seasonal temperature differences, the warm and humid air inside the car meets the cold windshield, leading to heat release and liquefaction, which easily causes fogging. 3. Use the car heater: Turn on the heater and direct warm air onto the glass to quickly raise the temperature of the front glass, eliminating the conditions for the warm and humid air inside the car to release heat and liquefy on the window glass, thereby preventing fogging.