How to Defog Car Windows in Winter?

[SanAdriana]

Methods for defogging car windows in winter: opening windows for air convection, using the air conditioning system to defog, applying professional defogging agents, or using dish soap to prevent fogging. If the fog inside the car is not too heavy, you can slightly open both side windows to create air convection between the inside and outside of the car, which will reduce the temperature difference and gradually dissipate the fog. Turning on the car's heater aims to use heat to evaporate water vapor and keep the windows dry. However, since the car's heating system typically relies on the engine's heat, a freshly started car won't have warm air immediately, making the defogging process relatively slow.