What is ceramic window tint? Film types, materials and brands compared
Ceramic window tint is a polyester film carrying non-metallic, nano-scale ceramic particles that absorb the sun's infrared heat while letting visible light through. With no metal in it, it leaves phone and GPS signals alone. At the 35% shade, LLumar's ceramic films reject 48–54% of total solar energy; its dyed film, 35% (film on 6 mm clear glass) (LLumar).
How ceramic tint works
A window film keeps heat out in two ways: it reflects the sun's energy or absorbs it (IWFA). Dyed film absorbs with dye. Metallized film reflects with a thin layer of aluminum. Ceramic film adds infrared-absorbing nanoparticles, set into the adhesive, a coating or a layer of their own, and the International Window Film Association notes that these particles absorb far more efficiently than dyes. Infrared makes up about 53% of the sun's rays by the IWFA's figure, so a film that stops it can cut heat without being dark.
The particles hold no metal, so the film stays low-reflective and leaves signals alone: 3M sums up its Ceramic IR line as a "metal-free design with no electronic interference" that "will not interfere with cell phones, GPS systems or satellite radio" (3M).
Three things the label does not tell you:
- Ceramic and nano-ceramic are used for the same class of film. "Nano" describes the particle size; SunTek, for one, describes its ceramic films as a "nano-ceramic construction" (SunTek).
- "Ceramic" has a second meaning. The IWFA also files sputtered titanium-nitride films under ceramic: a metal nitride laid down in a vacuum chamber, a different technology from the particle films sold as ceramic tint.
- The particles cannot make a dark film by themselves. In the IWFA's words, most nanoceramic particles are "not capable of producing a dark film using just the particles". A 5% or 20% ceramic gets its darkness from a dyed or colored layer in the same stack.
What window tint is made of
Every car window film starts as polyester (PET) film: polyester chips melted, extruded and stretched in both directions into a clear, tough sheet. Car films mostly use 1 mil (25 micron) or ½ mil layers (IWFA). Makers then combine several materials into one product, a step the trade calls conversion:
- The polyester base, one layer or several, bonded with laminating adhesive.
- The performance layer, which gives the film its type: dye, a vacuum-deposited metal (almost always aluminum), a sputtered metal, oxide or nitride, or a coating of infrared-absorbing nanoparticles.
- UV absorbers in the polyester or the adhesives, which protect the film itself and block UV from the cabin.
- A scratch-resistant coating on the face you touch. Polyester alone is not scratch resistant, and every film needs one.
- A pressure-sensitive mounting adhesive, applied wet to the inside of the glass with a slip solution.
- A release liner over the adhesive, peeled off at installation.
The finished film is thin: XPEL lists its PRIME films at 1.5 to 2 mil (XPEL). So dyed, metallized, carbon and ceramic tint share the same skeleton; only the performance layer differs.
Types of window tint: dyed, metallized, carbon and ceramic
| Type | What does the work | Look | Signals | Color over time |
|---|---|---|---|---|
| Dyed | Dye in the polyester; SunTek's is "polyester films, UV blockers, and charcoal dye" laminated together (SunTek) | Flat, low reflection | No metal: 3M's dyed Color Stable promises "no interference with mobile phones, GPS and radio signals" (3M) | Some dyed films change color (SunTek); color-stable dyed lines exist, such as 3M Color Stable and LLumar ATC |
| Metallized (hybrid) | A vapor-deposited aluminum layer, usually laminated to a colored layer (IWFA) | Some sheen: SunTek's metal-dyed film has "a mirror-like sheen" (SunTek) | Carries metal, the thing 3M's non-metalized films are designed around, "to avoid interfering with electronics, satellite radio, GPS, and mobile devices" (3M) | Has a colored layer too |
| Carbon | Carbon particles "rather than simple dyes" (SunTek) | Matte charcoal, non-reflective | Non-metal, "signal friendly" (SunTek) | "Will not change color like some dyed films" (SunTek) |
| Ceramic (nano-ceramic) | Non-metallic infrared-absorbing nanoparticles (IWFA) | Low reflection, in dark to near-clear shades | Metal-free: "will not interfere with cell phones, GPS systems or satellite radio" (3M) | Dark shades still use a dyed or colored layer |
| Sputtered and multilayer | Metal, metal-oxide or nitride layers laid down in a vacuum (IWFA), or a stack of polymer layers: 3M Crystalline has "over 200 layers" (3M) | Depends on the film | Sputtered metal films carry metal; 3M Crystalline is non-metalized | Depends on the film |
Where we stand: we install carbon, ceramic and multilayer film only, no dyed or metallized film: SunTek CXP carbon, 3M Ceramic IR, and 3M Crystalline, a multilayer film, as the premium tier. Each film's figures are on car window tint.
Ceramic vs carbon vs dyed vs metallized: the heat numbers
| Type | Film | Light through | TSER | IRER |
|---|---|---|---|---|
| Dyed | LLumar ATC 35 (sheet) | 38% | 35% | 22% |
| Dyed | SunTek Standard 35 (sheet) | 32% | 35% | Not listed |
| Metallized | LLumar ATR 35 | 37% | 44% | 40% |
| Metal-dyed | SunTek HP 35 | 37% | 43% | Not listed |
| Carbon | SunTek Carbon 35 | 36% | 38% | Not listed |
| Carbon | SunTek CXP 35 | 33% | 53% | 55% |
| Ceramic | LLumar CTX 35 | 37% | 48% | 48% |
| Ceramic | SunTek CIR 30 | 33% | 55% | 59% |
| Ceramic | 3M Ceramic IR 35 (sheet) | 45% | 52% | 61% |
| Nano-ceramic | LLumar IRX 35 | 39% | 54% | 60% |
| Nano-ceramic | SunTek Evolve 35 | 38% | 57% | 64% |
| Multilayer | 3M Crystalline CR BLK 35 (sheet) | 40% | 57% | 69% |
Darkness is not heat rejection. LLumar's dyed ATC rejects 22% of infrared at every shade from 5% to 50%, while its ceramic CTX holds 47–50%. The result: LLumar's light CTX 50 ceramic rejects 43% of total solar energy, about the same as its near-black ATC 05 dyed limo film at 44% (LLumar). A dark dyed film blocks light; it does little more against infrared than a light one.
The film matters more than the label. SunTek's two carbon lines span 38% (Carbon 35) to 53% (CXP 35) on one sheet, and CXP 35 beats LLumar's entry ceramic, CTX 35, at 48%. Within SunTek's range, CXP 35 carbon and CIR 30 ceramic both let 33% of light through, and the ceramic rejects 2 points more (SunTek). "Ceramic vs carbon" is really one film against another.
Read TSER, not the infrared headline. TSER is 1 minus the solar heat gain coefficient and counts all of the sun's energy. "IR rejection", the IWFA warns, "is not defined in any national or international test method", and some makers measure it over 900–1,000 nm only (IWFA). SunTek lists Evolve 35 at 93% selective IR rejection and 57% TSER; XPEL lists PRIME XR PLUS 35 at 96% IR rejection at a single wavelength, 1,025 nm, and 59% TSER, on its own 3 mm glass (XPEL).
UV is not the difference. Every film in the table lists more than 97% of UV blocked, most of them 99% or more. Figures differ by glass and method between makers, so compare within one maker's sheet where you can.
Is ceramic tint better than regular tint?
"Regular" tint usually means dyed film. At the same shade, ceramic rejects more of the sun's total energy (48–57% against 35% in the table above), keeps that heat rejection at light shades, and carries no metal. Against carbon the gap narrows: a good carbon film can match an entry ceramic. On the front side windows in California the type changes nothing, since only clear film of 88% or more is allowed, and even a clear ceramic can fall short: LLumar's AIR 90 lists 84% on 6 mm clear glass (how to have tint legally in California).
Whether ceramic earns its higher price on your car: is ceramic window tint worth the extra cost? Our prices by car size are on ceramic window tint. Choosing a shade: is 35 or 20 tint darker. Fading, bubbling and lifespan: how long window tint lasts.
Ceramic tint brands and how to compare them
| Line | What the maker calls it | TSER near 35%, 6 mm clear glass |
|---|---|---|
| 3M Ceramic IR (sheet) | "Metal-free design with no electronic interference" | 52% (Ceramic IR 35) |
| 3M Crystalline (sheet) | "Multilayer optical film with nano-technology", over 200 layers, non-metalized; not a ceramic-particle film | 57% (CR BLK 35) |
| LLumar CTX (sheet) | "Ceramic Window Tint" | 48% (CTX 35) |
| LLumar IRX | "Advanced nanoceramic IR-blocking technology" | 54% (IRX 35) |
| SunTek CIR (page) | "Ceramic non-metal construction" | 55% (CIR 30) |
| SunTek Evolve | "HeatResist nanoparticle technology" | 57% (Evolve 35) |
We found no independent lab that ranks tint brands, so a ranking is not a fact anyone can give you. What you can compare: the TSER the maker prints for the shade you can run, measured on stated glass; whether the film is metal-free; the maker's warranty terms and who registers them; and the installer, whose cut, heat-forming and edges decide how the film looks for years. A maker's flagship and its entry ceramic can sit 6 points apart (LLumar IRX 35 and CTX 35), more than some carbon-to-ceramic gaps. We install 3M Ceramic IR and 3M Crystalline; their figures by shade are on ceramic window tint.
Professional help
When to call a pro
A ceramic film is only as good as its fit: clean glass, film heat-formed to the curve of the back glass, sealed edges, and a meter reading that shows the front windows pass. We fit SunTek CXP carbon, 3M Ceramic IR and 3M Crystalline at your home, office or garage, and the quote names the film and its TSER at your shade before you pay.
Questions
Does ceramic tint let you see better at night?
Not at the same shade: a 5% ceramic is as dark as a 5% dyed film. What its low reflection does and does not change: the downsides of ceramic tint.
Can you put ceramic tint over factory tint?
Yes. Film goes on the inside of the glass, factory-tinted glass included, and the two stack: on 3M's 73% green automotive glass, Ceramic IR 35 lets 37% of light through, against 45% on clear glass (3M). That is why the installer meters the glass first. In California the front side windows still take only clear film.
Is ceramic tint the same as ceramic coating?
No. Ceramic tint is a polyester film applied to the inside of the glass. A ceramic coating is a protective layer applied to the paint. They share a word, not a material or a job. For the paint, see ceramic coating.
Can ceramic tint be removed?
Yes. We found no maker that gives a separate method for ceramic film, so the methods for film in general are the ones to follow: slowly, with care at the back glass. How it is done: how old window tint is removed.
More in Window Tint Explained
- How to Have Tint Legally in California: The Rules for Every WindowThe legal tint for each window in California, the windshield line, medical letters, tint meters and what a ticket costs.
- What are the downsides of ceramic tint? Cost, heat, night vision and alternativesThe real trade-offs of ceramic tint, from cost and the heat it cannot stop to night vision and signals, plus what to use instead of tint.
- How long does window tint last? Installation, curing, bubbling and warrantyHow long tint lasts by film type, how it is installed and cures, why it bubbles or turns purple, how old tint is removed, and what the warranty covers.
- Is 35 or 20 tint darker? How 5, 20, 35 and 50% tint look on a carHow dark 5, 20, 35 and 50% tint look, who can see in, how well you see out at night, and how to preview a shade on your car.
- Last updated September 15, 2026
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