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Writer's pictureNick Moussa

Correct vs. Incorrect Car Buffing and Polishing

Updated: 6 days ago

Car paint can be polished the right way—or the wrong way. Effective car buffing requires high-quality materials and tools that won’t damage the paint. However, the most crucial factor is the expertise of the technician. A skilled car care specialist understands the precise techniques required for car polishing, including when to apply different levels of pressure and speed. This process carefully removes a thin layer of clear coat to eliminate scratches or oxidation, without harming the paint.

Incorrect car buffing, even with quality materials and equipment, can still cause damage. Over-polishing with too much pressure, speed, or a dirty pad can strip away significant layers of clear coat. Each improper polish can remove about 5 microns from the lacquer thickness; after several incorrect attempts, the paint may appear dull and permanently damaged.

Conversely, professional-grade car buffing performed by specialists removes only about half a micron per session, preserving the paint’s integrity. With a paint thickness gauge, you can monitor the thickness of the clear coat, which typically ranges between 40 and 60 microns, ensuring safe buffing every time.

Using a paint thickness gauge, you can accurately measure the paint layer, which ideally ranges from 50 to 70 microns. This device is essential for determining if your car has enough paint depth for safe polishing, as it shows precisely how much paint remains and how much is being removed during the buffing process. Knowing these details can help you decide if your car is ready for buffing and the level of polish required for a smooth finish without risking paint damage.


Car Buffing

Can Excessive Car Buffing Damage the Paint?

In short, excessive car polishing can damage the paint by gradually reducing the thickness of the clear coat. However, using a paint thickness gauge and trusting a specialist for buffing your car ensures that the process won’t harm your car. Even on a new vehicle, improper or excessive polishing can cause paint damage. Professional car care keeps your paint protected by carefully managing the depth of each polish and maintaining the paint’s integrity over time.


How Often Should You Polish Your Car?

The frequency of car buffing and polishing depends on how well you maintain the vehicle and the quality of its paint. If you consistently care for your car by applying wax and sealant and avoid significant scratches, swirl marks, or fading, polishing once a year should be sufficient to keep it looking its best. Regular upkeep reduces the need for frequent polishing, preserving the paint and clear coat over time.


When Should You Polish Your Car?

Polishing is recommended when you notice scratches, fading, or swirl marks on your car's surface. These imperfections can often be removed with a proper car buffing session. However, if your car has new paint, there’s generally no need to polish, as fresh paint typically retains its shine and smooth finish without additional treatment.


Does a Car Bought from an Agency Need Polishing?

Yes, even a car purchased through an agency may benefit from car buffing or polishing. During shipping and storage, vehicles are exposed to humidity and various environmental factors that can cause the paint to fade or lose its luster. Some dealerships polish the paint before selling, but if not, a professional polish can restore up to 90% of the paint’s shine. A quick measurement of paint gloss can also help determine whether buffing is needed for optimal appearance.


Does Polishing Remove a Large Thickness of Paint?

When done correctly, machine polishing typically removes only about one micron from the paint’s surface. However, incorrect polishing techniques can remove up to 10 microns, which risks damaging the paint and clear coat. Professional car buffing ensures minimal removal, preserving the paint's quality and extending its lifespan.


Why Do Scratches Reappear After Polishing Your Car?

There are several reasons why scratches may reappear shortly after car buffing and polishing. Here are the key factors:

  • Use of Silicone or Wax-Based Products: Some materials contain silicone or wax, which can temporarily mask scratches. However, when the paint is exposed to heat or sunlight, these substances may melt, causing the scratches to reemerge. Additionally, washing the car can also reveal these imperfections.

  • High Pressure and Temperature: Even when using products without silicone, high pressure and excessive heat can cause the polymers in the clear coat to expand and fill in scratches temporarily. Unfortunately, this effect is often short-lived, and scratches may resurface within a week.


To achieve the best results and minimize paint damage, it’s recommended that individuals interested in car paint polishing undergo training with specialists in car detailing. Proper techniques can help ensure long-lasting results and maintain the car's finish.

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