We have seen occasional cases on fog lights in which the film and/or adhesive discolors due to fog light temperatures. If this occurs, please send photos so we can verify the concern; this may be covered under our 5 year warranty. We recommend only having the fog lights on while the vehicle is in motion, as the airflow will help to cool the lens surface. Leaving the fog lights on while the vehicle is parked can create too much heat and cause the adhesive to burn/discolor.
