A. Condensation occurs in a vehicle lamp because the materials inside the lamp absorb moisture from the atmosphere. When the lamp is turned on, the temperature of the lamp will increase, which generates thermal convention due to the theory of warm air moving upwards and cool air moving downwards. When the warm air encounters the lower temperature, it will cause misting. Therefore having mist is a normal effect when the inner and outer of the vehicle light has different temperatures.
Virtually all lights are prone to condensate due to the following events: Air is trapped inside a lamp when manufactured plastic parts used in lights naturally absorb moisture in the air As the light heats up, these plastics parts release moisture that mixes with air. Moisture attaches itself to the coolest part of the lamp, e.g. the lens Halogen lamps tend to run hot so the moisture evaporates more quickly LED lights produce less heat so moisture takes longer to evaporate, so it can be more noticeable.
Condensation is a naturally occurring condition that can affect any light. It does not suggest a defect in a product.
A. Nowadays, in order to improve the style and aesthetics, most vehicle light lenses are designed without a pattern which makes it easier to notice the mist than those with patterns, In addition, the surface of the lens directly encounters the outside air which causes it to become the area where inner and outer surface have the greatest difference in temperature.
A. After you turn off your vehicle light, the inner and outer temperature of the light will slowly become balanced as the inner temperature begins cooling down. When the inner and outer temperatures become balanced, the mist will be discharged through the vehicle light vents. Therefore, the mist will disappear or be reduced to a minimum.
A. After examining and reviewing the test results, there is no evidence that shows the mist in a vehicle light will shorten its service life or affect its functioning. Furthermore, all reflectors have been treated with insulator spray which prevents rusting or deteriorating of the lamp materials from the mist.