
Faded black plastic car trim can be a common issue, especially on older vehicles. While there are a variety of products available to restore the trim to its original colour, it's important to note that none of them offer a permanent solution. Before applying any products, it's crucial to clean the trim thoroughly to ensure no residue is left behind. This can be done with isopropyl alcohol and a microfiber or foam applicator. For more severe cases of oxidation, where the trim has turned white, it may be necessary to scrub the trim by hand or use an all-purpose cleaner before rinsing with water. Once the trim is clean, a variety of products can be applied, such as CeraKote, C4, or Black Wow, to restore the trim's original colour.
How to Rejuvenate Black Plastic Car Trim
| Characteristics | Values |
|---|---|
| Oxidation | Remove as much oxidation as possible before applying a dressing or sealant |
| Cleaning | Clean with isopropyl alcohol, an all-purpose cleaner or degreaser, or Citrus 6:1 and a magic eraser |
| Application | Use a microfiber or foam applicator to apply a trim restorer such as Solution Finish Trim Restorer, CeraKote, or Mothers Back to Black |
| Drying | Wipe off excess product with a clean towel and allow the plastic to dry for 6 hours |
| Painting | Use a plastic spray paint like Upol Plast-X, or a product like Black Wow |
| Coating | Apply a coating like C4 or VHT High Temp Black Wrinkle Aerosol SP201 |
| Protection | Use a product with UV protection, such as Aerospace 303 |
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What You'll Learn

Deep cleaning black plastic trim
Black plastic trim on cars can be effectively deep-cleaned and rejuvenated through various methods and products. Over time, plastic trim can become faded, cracked, or deteriorated due to exposure to the sun, environmental elements, and general wear and tear. Here is a detailed guide on how to deep clean and restore black plastic trim:
Cleaning the Trim
Firstly, wash and dry your car. This step ensures that the trim's surface is free from dirt, dust, and grime that could interfere with the deep cleaning process. Use a quality pH-balanced car wash soap and a dedicated cleaner, such as a detailing brush or a medium-bristle brush, to scrub and agitate the trim's surface. Rinse the trim thoroughly with clean water to remove any remaining residue.
Using a Heat Gun
One method to restore black plastic trim is by using a heat gun. Park your vehicle in a sunny area to allow the plastic trim to heat up with UV light, softening the plastic and making it easier to work with. Be cautious when using a heat gun, as excessive heat can warp or melt the plastic. Always test on a small area first and work on one section at a time. The heat gun draws out the oils within the plastic, restoring its appearance.
Applying Cleaning Solutions
To deep clean the trim, use a cleaning solution such as isopropyl alcohol or an all-purpose cleaner diluted accordingly. Apply the solution to the trim and use a brush to agitate and remove any remaining dirt or residue. Ensure you clean all the crevices and textured areas of the trim. Wipe off the excess product with a clean microfiber towel, and allow the trim to dry completely.
Using a Plastic Restorer
Once the trim is clean and dry, you can apply a plastic restorer to rejuvenate the black colour and enhance the trim's appearance. Products such as Solution Finish Trim Restorer or Black Wow are recommended for their effectiveness and long-lasting results. Follow the instructions on the product, and use a microfiber or foam applicator to apply the restorer evenly across the trim. Allow the product to penetrate the plastic for at least 30 seconds. Wipe off any excess, and let the trim dry for about 6 hours.
Protecting the Trim
To maintain the deep-cleaned and restored trim, consider applying a protectant or sealant. Products like Over The Top Plastic Sealer provide UV protection and enhance the life of the treatment. Additionally, regular washing of your car and the trim will help prevent future deterioration and maintain the trim's rejuvenated state.
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Removing oxidation
To remove oxidation, start by cleaning the plastic trim with isopropyl alcohol (IPA) to remove any residue, leaving only bare plastic. This will ensure that the oxidation is removed safely and effectively. You can then scrub the trim by hand using a brush or a wash mitt, or use a machine for more convenience and efficiency.
After scrubbing, rinse the trim with water to remove any remaining dirt or residue. Once the trim is dry, apply a plastic restorer or trim dressing to restore the black colour and protect the surface. It is important to note that some trim dressings may leave stains when they come into contact with water, so it is recommended to use a product like Solution Finish Trim Restorer, which has been praised for its quality and effectiveness.
For long-lasting results, consider using a UV protectant like Solution Finish Over The Top Plastic Sealer. This type of product will protect the plastic trim from harmful UV rays, preventing it from fading and deteriorating. It can be used as a standalone treatment on new or well-maintained plastics or as a topper over restored plastics. Allow the sealer to dry for at least 12 hours before washing the treated area.
By following these steps, you can effectively remove oxidation from black plastic car trim, improving the appearance of your vehicle and protecting it from future damage.
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Using a heat gun
Before using a heat gun, it is important to clean and dry the plastic trim thoroughly to remove any dirt, grime, or residue. This can be done using soap and water, or isopropyl alcohol for a deeper clean. Cover any nearby non-plastic surfaces with a flame-resistant tarp to protect them from the heat. Set the heat gun to a low or medium setting to avoid warping the plastic, and hold it several inches away from the surface. Move the heat gun slowly in small circles or sweeping motions, ensuring even heat distribution. Avoid leaving the heat gun in one place for too long to prevent burning or discolouration.
Once the trim has darkened and restored its colour, apply a UV protectant or plastic sealant to maintain the results and prevent sun damage. This step is crucial, as the heat gun method is not a permanent solution. The plastic's natural oils will eventually deplete again, and repeated treatments will deplete the oils further.
While the heat gun method can be effective, it is important to note that it may not work on all types of plastic. Additionally, it can be time-consuming and may not provide long-lasting results compared to other methods such as trim restorers or dyes. Some users have also reported mixed results, with the colour fading back within minutes or the plastic becoming splotchy. Therefore, it is recommended to test the heat gun on an inconspicuous part of the bumper before treating the entire trim.
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Painting plastic trim
Prepare the Trim
Firstly, it is important to assess the condition of the trim. If it has been neglected and is turning white, this is a sign of oxidation due to exposure to the sun. To restore the trim, you will need to remove the oxidation. You can do this by scrubbing the trim by hand or using a machine to scrub it, ensuring you thoroughly rinse off any residue.
Sand the Trim
The next step is to sand the trim. Use sandpaper with different grit levels to smoothen the surface and create a matte finish. Work slowly and carefully to achieve the perfect surface for painting. After sanding, clean the trim with warm water to remove any dirt or debris.
Mask the Trim
Before painting, you need to mask off the surrounding areas of the car to prevent overspray. Use masking tape specifically designed for trim, such as perforated trim masking tape for curved parts and precision masking tape for straight edges or slight bends. Ensure there are no gaps where paint can seep through by applying pressure to secure the tape over the panel.
Paint the Trim
When it comes to painting, choose a spray paint that is specifically designed for use on plastics and automotive purposes. This type of paint will adhere better to the plastic surface. Follow the instructions on the paint carefully, and apply several thin coats rather than one thick coat for a more uniform finish.
Apply Clear Lacquer
After the paint has dried, apply a clear lacquer to provide a shiny appearance and protect the paint job. Apply four to five coats, allowing each layer to dry for around 15 minutes before adding the next.
Reattach the Trim
Once the paint and lacquer are completely dry, carefully remove the masking tape and reattach the plastic trim to the car. Use a dedicated tool to secure the trim back onto the body panel.
Polish the Trim
Finally, take a clean microfibre cloth and polish the painted trim. This will enhance the shine and remove any loose debris, leaving a smooth and refreshed surface.
Remember, it is always important to work in a well-ventilated area and wear the appropriate protective gear when handling chemicals.
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Temporary restoration solutions
There are several temporary solutions for restoring faded black plastic car trim. These methods can improve the appearance of your car, but they are not permanent fixes and may require regular reapplication.
One popular method is to use a dressing product, such as Armor All, which offers a specific plastic and vinyl repair solution. While these dressings can effectively restore the trim's colour, they are prone to washing away after a few wash cycles or days of rain. To prolong their effectiveness, consider incorporating them into your regular car cleaning routine.
Lemon Pledge is another product that has been recommended for rejuvenating black plastic trim. It can provide a shine and restore the trim's appearance, although it may not repair any significant damage.
Additionally, some people have suggested using a heat gun as a temporary solution. However, it's important to note that while this method draws the remaining oils to the plastic surface, it can also accelerate the deterioration of the trim, making it brittle over time.
For a more long-lasting solution, consider using a trim restorer like Solution Finish. While it requires a thorough cleaning process and multiple applications, it can effectively restore and fix the trim, providing a black finish that can last for several months.
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Frequently asked questions
To rejuvenate black plastic car trim, you can use a product like Mothers Back to Black, Aerospace 303, CeraKote, or Black Wow. For a more permanent solution, you can also try painting the trim with a product like Upol Plast-X plastic spray paint.
To deep clean black plastic car trim, you can use an All-Purpose Cleaner (APC) or degreaser, diluted accordingly. Use a detailing brush to agitate and remove dirt from the textured trim. You can also use isopropyl alcohol to clean the trim, followed by a product like Solution Finish Trim Restorer.
Black plastic car trim can fade due to oxidation and exposure to the sun. Oxidation causes the trim to turn white, and the sun's UV rays can break down the plastic, causing it to lose its colour.











































