Because the car light is tight, it is easy to cause water when it is cleaned and rained, but when the temperature difference between the inside and outside is bigger, the fog will be produced.
Suggestion: in this case, it is best not to bake at high temperature. Because the material of the lamp is generally plastic, if the baking temperature is too high, it will result in the softening and deformation of the car lamp, which affects the use and beauty.
In addition, nowadays the headlights are usually monolithic. After the transparent lampshade, there is a backboard with a protective lamp body. The high temperature will lead to the melting of adhesive colloid and increase the possibility of water intake.
In general, the water in the light of a car will soon evaporate under the daytime sunlight.
However, if your headlights often have water, it is better to check the body of the lamp to see if it is caused by the crash and the frequent inflow of the lights.