The car lamp creating a foggy and  appearance is a normal phenomenon, even if is the original car fog. But it is to form water Water is not a normal phenomenon, in here, many people are not very clear how to distinguish led fog is water or fog, often see the drops of water that is water. In fact, LED is the water fog or haze, there is a preliminary judge, is to see the flow.We know, led fog water, usually water from LED fog lights above, and then flow into the LED fog lights below, this will form the flow trace is obvious, like waterfall, even if the water dry, there will be some traces, like snails after the road there will be like the traces, experienced teacher is watching it.If you see a LED fog is a form of the water and it was clean, so generally belongs to the normal situation, suggestions can put some desiccant inside and often open the LED fog lights, the lights to drying inside the water vapor, generally a week or so can be dispersed.