The main purpose of window tinting is to reduce the amount of heat and radiation from the sun that reaches the interior of the vehicle. The thickness of the film and the material from which it is made can vary. One of the main practical benefits of window tinting is the ability to prevent fading and damage to car's interior from ultraviolet light exposure.
In addition, deep tinting can enhance security and privacy as others cannot see what is in a vehicle as easily. Not only is it more difficult to see possessions inside a vehicle, but tinting also makes it easier to conceal occupants inside a vehicle.