Heat rejection and UV protection are two different functions of window tint. Heat rejection helps reduce the amount of solar energy entering a vehicle, while UV protection blocks ultraviolet radiation that can contribute to interior fading and sun exposure. How Does Heat Rejection Work In Window Tint Heat-rejecting window film is designed to reduce the amount of solar energy that passes through automotive glass. Depending on the film, this can involve reflecting or absorbing infrared and other solar energy before it enters the cabin. The practical difference is most noticeable when a vehicle sits in direct sunlight. Less solar energy entering through the glass can help reduce heat buildup inside. This can be particularly useful during hot,…