Yes — and often better than reflective film. Heat rejection is determined by what a film is made of, not by how shiny it is. Non-reflective films block heat by absorbing infrared energy and re-radiating it away from the cabin, and by using nano-ceramic particles that selectively filter infrared while letting visible light pass through.
How much heat depends on the film tier:
Dyed film: roughly 25–35% TSER. Largely cosmetic, with a modest heat benefit.
Carbon film: roughly 40–50% TSER. Solid mid-tier performance and color-stable.
Ceramic and nano-ceramic film: roughly 50–70% TSER, with infrared rejection commonly in the 80–95% range. This is the tier that delivers a noticeably cooler cabin.
The spec to compare is TSER (Total Solar Energy Rejected), which accounts for ultraviolet, visible, and infrared energy together. Be cautious with headline "99% IR rejection" claims — those are often measured at a single infrared wavelength rather than across the full solar spectrum, so they can read impressively without translating into a cooler car.
Two other things worth knowing: heat rejection and darkness are separate specs, so a light-shade ceramic film can reject substantial heat without going dark — useful in states with strict VLT limits. And virtually all quality window film, reflective or not, blocks 99% of UV.