What Causes the Small Dots on Car Window Tints?

[DePeter]

The reasons for small dots appearing on car window tints are: Poor quality of the tint film: The free tint films provided by 4S shops may not be of good quality. Lack of technical expertise: Improper installation procedures by the tinting technician or incorrect temperature control during film heating. Counterfeit or substandard products: Over time, small bubbles may appear on car window tints. The benefits of car window tinting are as follows: Heat and sun protection: Tinting effectively blocks a significant amount of heat generated by infrared rays. UV protection: Medium and long-wave ultraviolet rays can penetrate thick glass, but applying a heat-resistant film can block most UV rays, preventing skin damage and reducing the aging of car interiors. Safety and explosion-proof: The base layer of the film is made of polyester, which is highly resistant to tearing and puncturing. Combined with the adhesive layer, the film enhances the glass's strength, preventing injuries from accidental glass breakage. Creating a private space: By choosing the right type of film, the interior of the car becomes difficult to see from the outside while maintaining visibility from the inside, ensuring privacy and safety. Precautions for car window tinting: Avoid rolling down the windows for 3-7 days after tinting to prevent film damage. Regardless of the season, the recommended period for not rolling down windows is about one week. Higher-end films, due to their special materials, require extra caution. Whether windows can be opened should be confirmed during a follow-up inspection at the shop one week after installation.

[Petunia]

I've worked in a car tinting shop for over ten years and have encountered many customers complaining about these small dots. The most common cause is an unclean environment during installation, such as windows not being thoroughly cleaned, allowing dust or small particles to stick to the surface and get trapped under the film. It could also be due to incomplete bubble removal during the tinting process, leaving tiny white spots after the moisture evaporates. Another factor is poor-quality film with uneven coatings or defects, which can shrink and form spots. These dots are not only unsightly but can also affect the film's heat insulation performance and lifespan over time. I recommend going to a professional shop for installation—they have dust-proof equipment and techniques. After installation, inspect carefully, and if any spots are found, you can return to have the technician address them. Some spots can be removed by carefully heating them with a heat gun.

[DanielaLee]

I've been driving for many years and have also encountered the annoyance of small dots appearing after window tinting. It feels like it's because the tinting was done in a windy or dusty area, where particles flew in and got stuck. It could also be due to impure water used, with impurities mixing into the film and forming small dots. These tiny sesame-like dots are quite unsightly, especially when they glint in the sunlight, which is really irritating. Later, I learned my lesson: first, clean the windows thoroughly with a microfiber cloth before tinting, and it's best to avoid doing it in dry weather. If there aren't too many dots, some might gradually disappear after a few days, but don't mess around with them to avoid scratching the surface. Investing in a higher-quality film can reduce this kind of problem, saving you the hassle of redoing it.

[CoraLee]

Car film application is a daily hobby for me, but those tiny dots are always a headache. I've found the causes are usually trapped air bubbles or dust, resulting from improper pressure control during installation. The working environment is crucial - poorly ventilated rooms tend to accumulate dirt, leading to small dots. High-quality films have special anti-dust coatings, but cheaper ones can hardly avoid this. I recommend cleaning all tools and surfaces thoroughly before starting, and using professional squeegees to remove bubbles. Regarding related aspects, these dots may turn yellow over time, affecting appearance; you can wait until the film completely dries to observe, as some may fade.