
Car polishing should not exceed five times at most. For normal-temperature paint surfaces with soft paint quality, and especially for inferior paint which can become overly greasy, most cars can only withstand polishing up to five times. Car Polishing Cycle: The first polishing should be done after two years. When a new car leaves the factory, the manufacturer has already applied a protective layer to the paint. Although driving exposes the car to wind and rain, the underlying paint remains unharmed. It is recommended to wait two years before the first polishing. After that, the car can be polished every three years, or every four years if properly maintained. Health Hazards of Polishing: For example, metal dust can affect respiratory and lung health, and may also impact those with sensitive skin. Some metal particles might fly into the eyes, and the polishing machine can affect hearing. Using Kaiyu environmental protection equipment, such as the wet dust removal and explosion-proof polishing integrated machine, eliminates these health hazards and is also beneficial for the environment.

I've been driving for fifteen years and have polished my car quite a few times myself. Generally, it's safe to polish a car about four to five times, but this largely depends on the thickness and quality of the paint. New car paint layers are approximately 100 microns thick, and each polishing removes about 5 to 10 microns. After several polishes, the paint becomes thinner, making it prone to exposing the primer or becoming brittle. Ideally, polishing once a year is sufficient, combined with waxing or sealant protection to minimize wear. Consider polishing only when the paint appears noticeably dull or has deep scratches. Over-polishing may require a repaint, which is costly and not worth it. In short, controlling the frequency is key—don't polish too often just for shine. Keeping the car in a garage or under cover can also extend the intervals between polishes.

My previous car started having paint issues after being polished three times, such as a rapid decline in glossiness. I consulted the maintenance shop technicians, and they advised not to exceed five or six times, otherwise the risks would be high. In fact, there's no strict upper limit on the number of polishes, but each car's tolerance varies; imported cars with thicker paint might withstand more polishes, while economy cars with thinner paint require more caution. My suggestion is to first assess the car's condition: for minor scratches, address them in small areas rather than frequently polishing the entire car. Using a car cover or parking in the shade can reduce sun-induced oxidation, naturally decreasing the need for polishing. Regularly inspect the paint to avoid waiting until deep damage accumulates before taking action. This approach is more efficient and better protects your beloved car.

As a novice who bought a car just half a year ago, I'm also concerned about the frequency of polishing. After researching, I found that most recommendations suggest 3 to 5 times is reasonable—you can't polish indefinitely as it will thin the paint layer. The effect is immediate after each polishing, but excessive polishing may eventually require a repaint, which is very costly. I've only done it once so far and plan to be more cautious in the future, using quick maintenance sprays more often to reduce polishing frequency. The key is to observe the paint condition and not rush to act on minor issues.


