The glass in the car is easier to fog in winter or rainy days, which is caused by the temperature difference between the inside and outside of the car, and the key to removing fog is to solve the temperature difference on the glass surface.
The first method is to open the window and reduce the temperature difference between the inside and outside of the car. You only need to open the Windows on both sides a little, or open the skylight a crack, so that the air inside and outside the car to form convection, and the fog on the glass will soon disappear.
This content has been taken from experience without authorization
The third way is to use professional anti-fog products. The anti-fogging agent should be applied to the car glass in advance to form a protective film on the glass to prevent the formation of fog. There are many kinds of anti-fogging agents on the market, and the anti-fogging effect is uneven, and we need to identify and use more.