Published September 21, 2026
Every window tint shop sells some version of “heat rejection,” but not all film does the same job. The two main types you’ll come across are dyed film and ceramic film, and in a climate like Phoenix and Mesa, the difference between them shows up fast — on your dashboard, your AC bill and how the tint looks five years from now.
Dyed tint is a layer of dye sandwiched between adhesive and a protective topcoat. It darkens the glass and absorbs some incoming light, which cuts glare and blocks a portion of UV rays. What it doesn’t do well is stop infrared heat, the part of sunlight that actually makes a parked car feel like an oven. Dyed film mostly absorbs that heat rather than blocking it, so the glass itself heats up.
Ceramic tint uses microscopic ceramic particles instead of dye. Those particles are non-metallic and non-conductive, so they don’t interfere with GPS, Bluetooth, keyless entry or mobile signal, and they reject a much larger share of infrared heat before it ever reaches the glass. That’s the difference you feel getting into the car.
| Dyed film | Ceramic film | |
|---|---|---|
| Heat rejection | Low — absorbs rather than blocks | High — blocks infrared before it reaches the glass |
| UV rejection | Partial | 99%+ |
| Signal interference | None | None |
| Color stability | Can fade or turn purple | Stays true to shade |
| Optical clarity | Good | Higher |
| Typical cost | Lower upfront | Higher upfront, less to replace |
We install Geoshield ceramic film exclusively — C2 Ceramic, Pro Nano and Apex Ultra — all backed by a lifetime warranty. TSER (total solar energy rejection) ranges from 35–70% depending on the film, with IR rejection up to 95% on Apex Ultra and UV rejection of 99%+ across the lineup. We don’t install dyed film, because in Arizona heat, it isn’t the film we’d want on our own cars.
For Arizona, most drivers find it is. Ceramic blocks far more infrared heat and won't fade or turn purple over time, so it keeps working and looking right for the life of the film.
Some. Dyed film darkens the glass and blocks a portion of visible light and UV, but it does much less against infrared heat, which is the part of sunlight you actually feel.
No. Ceramic film uses non-metallic, non-conductive particles, so it doesn't block or interfere with GPS, Bluetooth, keyless entry or mobile signal.
We install Geoshield ceramic film exclusively — C2 Ceramic, Pro Nano and Apex Ultra — all backed by a lifetime warranty. We don't install dyed film.
Tell us about your vehicle and we’ll recommend the right ceramic film for your budget.