Do You Need to Turn on the Heater to Defog a Car?

[SadieLee]

You don't necessarily need to turn on the heater to defog a car. Crack open a window slightly: By opening a small gap in the window, air can circulate, and the fog will dissipate very quickly. Make a homemade defogging solution: Making your own defogging solution is also very simple. Just mix dish soap with water, then use a towel to apply a little of the soapy water to both the inside and outside of the windshield. Once the soapy water dries, it forms a protective film on the window. The effect is similar to a water droplet on a lotus leaf—it just slides right off. Isn't that simple? Even large water droplets won't be a problem anymore.