Originally Posted by affinity1
And how does regular tint not help with heat?
Regular tint absorbs infrared, heating up the glass and causing it to re-radiate heat out both sides, so half the IR blocked still goes into the interior as heat. And there is a limit of how much visible light can be blocked on the windshield.
Using a reflective coating, the amount of reduction of heat entry is much higher, even on the windshield.