Is It Normal for New Car Headlights to Fog Up?

[VanJoshua]

It is normal for new car headlights to fog up because the temperature of the air inside the headlights changes, and once humid air enters, it is difficult to escape, causing moisture to accumulate inside. This is especially noticeable when the headlights have not been used for a long time. However, this is not a problem. When the car is driven, particularly during nighttime driving, the residual heat from the headlights will warm the air inside the headlight housing, causing the fog to evaporate and dissipate more quickly. Here is some additional information: The principle behind headlight fogging: In all current vehicle models, whether they use halogen headlights, xenon headlights, or the more technologically advanced LED headlights, there is a rubber vent tube behind these lights. When the headlights are turned on suddenly or during normal driving, the heat they generate is expelled through this tube. However, because of this tube, moisture from the air can also "seep" into the headlight housing. Over time, this moisture forms fog and eventually accumulates into small water droplets.