
Plastic is a common material in modern cars, used for everything from headlights and bumpers to interior materials. It is lightweight, cheap to make, and easy to mould into different shapes. However, plastic is susceptible to sun damage, and car pillars are a common scratch hotspot. Owners of cars with plastic trim have complained about sun damage, scratches, and stains. To restore hard plastic car pillars, car owners can use a plastic restorer, heat gun, or olive oil. They can also use a car machine polisher or polish by hand.
How to Restore Hard Plastic Car Pillars
| Characteristics | Values |
|---|---|
| Why restore plastic car pillars? | To improve the appearance of the car, making it look newer. |
| When to restore plastic car pillars? | When the plastic trim has faded, cracked, or deteriorated due to sun exposure, harsh weather, or scratches. |
| How to restore plastic car pillars? | By using plastic restorers, trim restorers, polishing, heat guns, or olive oil. |
| Steps to restore plastic car pillars | 1. Clean the pillars with isopropyl alcohol and a microfiber cloth. 2. Apply a trim restorer or plastic restorer to an applicator pad or foam applicator and massage it into the faded areas. 3. Let the product sit for a few minutes. 4. Buff the residue with a microfiber cloth or towel. 5. Tape off any areas you don't want to get polish on. 6. Optionally, use a heat gun on a medium-low setting to heat the plastic and restore its colour. 7. Treat the surface with olive oil, WD-40, or a trim restoration product for added protection. |
| Products for restoring plastic car pillars | Plastic restorer, Solution Finish Trim Restorer, Gtechniq C4 Permanent Trim Restorer, Mothers Back to Black Trim & Plastic Restorer, Truck Bedliner/Raptor coating, Clear coat spray, olive oil, WD-40. |
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What You'll Learn
- Clean pillars with an isopropyl alcohol mixture and a microfiber cloth
- Apply a trim restorer and massage it into the faded areas
- Use a heat gun to restore the plastic's natural deep black colour
- Treat the surface with olive oil, WD-40, or a trim restoration product
- Use a machine polisher for best results, or polish by hand

Clean pillars with an isopropyl alcohol mixture and a microfiber cloth
To restore hard plastic car pillars, cleaning the plastic trim with isopropyl alcohol is an important first step. This will ensure that there is no residue on the plastic and that it is free of any contaminants.
When cleaning car pillars with an isopropyl alcohol mixture, it is important to use a microfiber cloth. Microfiber cloths are soft, absorbent, and gentle on surfaces, making them ideal for car detailing. They are also effective at picking up and holding dirt, dust, and other particles, which is crucial when cleaning car pillars to ensure that all residue is removed.
To begin the cleaning process, mix the isopropyl alcohol with water. The recommended concentration of alcohol varies, but some sources suggest using 70-90% alcohol to effectively dissolve any silicone-based products or other residues on the plastic. Dip the microfiber cloth into the diluted isopropyl alcohol mixture and wring out any excess liquid.
Gently wipe down the car pillars with the damp microfiber cloth, ensuring that you reach all areas of the pillars. Pay close attention to any crevices or hard-to-reach areas, as these may require extra effort to clean thoroughly. Go over the pillars multiple times if necessary, using gentle, circular motions to lift any dirt or residue.
Once you have finished cleaning the pillars, inspect them to ensure that all residue has been removed and that the plastic is left bare. Allow the pillars to air-dry or use a separate dry microfiber cloth to gently wipe them down, absorbing any remaining moisture.
It is important to note that while isopropyl alcohol is effective at cleaning plastic car pillars, it can also be strong enough to remove factory-applied protective coatings. Therefore, it should be used with caution, and testing on a small area first is recommended. Additionally, always work in a well-ventilated area when using isopropyl alcohol, and wear protective gloves to avoid skin irritation.
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$11.62

Apply a trim restorer and massage it into the faded areas
To restore your car's hard plastic pillars, you can apply a trim restorer and massage it into the faded areas. This is a straightforward and cost-effective way to enhance the appearance of your car. Firstly, ensure you are working with a clean surface. Clean the pillars with an isopropyl alcohol mixture and a microfiber cloth. Next, apply the trim restorer to an applicator pad and massage it into the faded areas. You can use a foam applicator or a microfiber applicator for this step. Work the product into the plastic surface using circular motions. Once the product has been worked into the trim, leave it to sit for a few minutes. Finally, use a microfiber towel or cloth to buff the surface and remove any remaining residue.
There are a variety of trim restorers available on the market. Gtechniq C4 Permanent Trim Restorer is a durable option that can last up to two years. Solution Finish Trim Restorer is another popular choice, offering long-lasting results and protection against trim deterioration. If you're looking for a more natural approach, you can use olive oil or WD-40 as a trim restoration product. Simply heat the plastic with a heat gun to draw out the oils, then treat the surface with your chosen oil to restore its colour and provide protection.
It's important to note that some trim restorers may leave stains when they come into contact with water. Additionally, while heating the plastic can be effective, it should be done with caution to avoid warping the plastic. Always start with a clean surface and heat one area at a time to prevent damage.
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Use a heat gun to restore the plastic's natural deep black colour
Using a heat gun is a popular method to restore the deep black colour of hard plastic car pillars. This method is simple, budget-friendly, and effective, but it is not a permanent solution.
To start, clean the plastic surface with soap and water, removing as much dirt as possible. Dry the surface with a towel. This step is important because using a heat gun on dirty plastic can burn in any dirt or stains. Next, turn on the heat gun and hold it several inches away from the surface. Move the heat gun in small circles around the discoloured plastic, avoiding keeping it in one place for too long. This will ensure an even colour treatment and prevent the plastic from burning.
As you move the heat gun around the plastic, you will notice the colour changing to a darker, richer shade. This is because heating the plastic draws out the oils within the material. The heat opens up the cells, allowing moisture to escape and bringing the natural oils to the surface, restoring the plastic's colour.
While this method can be effective, it is important to note that the results may not last long, especially if the car is exposed to direct sunlight. The plastic may eventually fade again, and after several treatments, it will no longer have enough natural oils to restore. Therefore, it is recommended to treat the surface with olive oil, WD-40, or a trim restoration product after heating to enhance the colour and provide some protection.
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Treat the surface with olive oil, WD-40, or a trim restoration product
If you're looking to restore the hard plastic car pillars, there are a few products you can use to treat the surface and bring back some shine. Firstly, cover any areas you don't want to get the product on with masking tape, especially the rubber seals, as polish residue is hard to remove from these areas.
Olive oil can be used to restore plastic to some extent. Apply a layer and leave it for a few hours, then wipe off any residue. This method is inexpensive and can be effective, but it may not last long-term.
WD-40 is a versatile product that can be used to treat and restore plastic car surfaces. It can help remove scratches and swirls, and it may also provide some UV protection to prevent further fading.
There are also dedicated trim restoration products available that are designed specifically for restoring car plastic. These include Meguiar's Ultimate Black Plastic Restorer, which is highly rated and designed to restore exterior plastic, vinyl, and rubber trim. It uses advanced hybrid polymer technology to seal surfaces and protect against UV damage. CarGuys' Plastic Restorer is another option, which is formulated to restore and renew plastic, rubber, and vinyl, and it claims to have better water repellency than some competitors. For longer-lasting results, a ceramic coating like Gtechniq C4 Permanent Trim Restorer can be applied; it lasts up to two years and is easy to apply.
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Use a machine polisher for best results, or polish by hand
Restoring Hard Plastic Car Pillars
Using a Machine Polisher
If you want to use a machine polisher to restore your car's hard plastic pillars, start by taping off any areas you don't want to get polish on. Any polish residue on rubber seals can be challenging to remove, so cover them with masking tape. Next, apply a small amount of compound to the foam applicator and work it into the trim using circular motions. Once the product starts to turn clear, stop polishing and buff off the residue with a microfiber cloth.
Polishing by Hand
If you prefer to polish the pillars by hand, you can achieve very satisfactory results. Start by taping off any areas you don't want to get polish on, just like with the machine method. Then, apply a small amount of compound to a foam applicator and work it into the trim. Again, circular motions tend to work best. Once the product becomes clear, stop applying compound and buff the residue away with a microfiber cloth.
Other Tips for Restoring Hard Plastic Car Pillars
In addition to polishing, there are a few other things you can do to restore hard plastic car pillars. One option is to use a heat gun to heat the plastic, which draws out the oils within the material and can restore its natural deep black colour. Be careful not to melt the plastic, and always start with a clean surface to avoid burning contaminants into it. You can also treat the surface with olive oil, WD-40, or a trim restoration product to provide additional protection against sun and rain.
Additionally, you can use plastic trim restorers like Solution Finish Trim Restorer or Gtechniq C4 Permanent Trim Restorer to restore black plastic trim. These products are easy to apply and can provide long-lasting results. For example, Solution Finish Trim Restorer can keep your trim looking new for approximately eight months or more, while Gtechniq C4 Permanent Trim Restorer lasts for up to two years.
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Frequently asked questions
Restoring hard plastic car pillars can be done through a variety of methods, including:
- Using a plastic restorer, which is an easy and cost-effective way to improve the appearance of your car.
- Applying heat to the plastic using a heat gun on a medium-low setting to draw out the oils within the material.
- Using a car machine polisher or polishing by hand. Tape off any areas you don't want to get polish on, apply a small amount of compound to the foam applicator and work it into the trim, then buff off the residue with a microfibre cloth.
There are a variety of products available for restoring hard plastic car pillars, including:
- Solution Finish Trim Restorer
- Gtechniq C4 Permanent Trim Restorer
- Mothers Back to Black Trim & Plastic Restorer
- Truck Bedliner / Raptor Coating
To prevent damage to hard plastic car pillars, it is recommended to:
- Only use the door handle to shut the door.
- Follow safe car wash procedures.
- Park your car in the shade to avoid sun damage.
Hard plastic car pillars can be damaged by a variety of factors, including:
- Sun exposure, which can cause the plastic to fade, crack, or deteriorate.
- Scratches, which can occur easily on soft, clear plastic surfaces.











































