Very good product. It did a good job on faded, unpainted car plastics. Time will tell how long it lasts.

Update: (04/05/26)
After a few weeks of use with rain and dust, the result remains very good.

It does the job! It revived the plastics that were faded without needing frequent repeated use.

Very good, you need very little to avoid stains on the windshield and bodywork. I used it on a 25-year-old car and the plastic bumpers and sealing rubbers returned to their factory condition with no difference for three months now. On a two-year-old car with well-maintained plastics and rubbers, it made no visual difference except for the first few hours when they looked wet, but they do have a noticeable hydrophobic effect.

I really wasn't impressed. I used it on unpainted plastics and didn't see the desired result. I applied almost three coats but it left stains, streaks, and in some areas the unpainted plastics barely darkened at all. In the past, I used the equivalent product from Autoglym and it was much superior and more effective. Maybe I didn't apply it correctly, but it definitely disappointed me despite the positive reviews

It is impressively good. Unfortunately, I don't know if the result can be captured in the photos.
Even though the plastics in the car are in excellent condition, by applying this particular product they looked even better and overall the car looks well cared for. It doesn't shine so much as to be annoying, it just gives a freshness. Additionally, something that impressed me even more is its durability. I thought it would come off with the first wash. I have washed the car more than 3 times with a pressure washer and car shampoo, without insisting on the plastics of course, and the product has remained.

You need a small amount on a sponge.
Ideally, don't go to a place with dust and dirt so that nothing sticks. Of course, you apply it to a clean car.
The application is for matte - textured plastics and not glossy ones.

The packaging is large. It will last you for a very long time.
No dilution needed!

When applied to the exterior plastics of a relatively new car, I did not see any visual difference before and after!
I consider it to be an impregnating varnish for plastic surfaces, creating a protective film! For very worn plastics, you might need to look for something else, such as a (black dye) plastic color restoration product.

It truly restores the vibrancy of the color to exterior plastics that has been lost over time!!!

I bought the product to clear up the trunk of the car. When used, the result seems quite satisfactory, but it does not last. Perhaps it should be dyed to show and have durability

It does what it says, the plastics that are not painted
Become like new without any greasiness!
I apply it with a sponge and with a cloth I collect the excess!
It would be good for these plastics to be cleaned with a stronger soap so that the plastic is cleaner before use.
It lasts 2 months without any issues.

Before and after unpainted plastic car handles 23 years old! Simply unbelievable and because I had the corresponding product from Autoglym, it simply can't be compared, day and night! Koch Chemie with closed eyes!

The bike is new, I applied it for protection! The result is better than on the first day I bought it! I went to the store where I bought the bike and they told me that the ones I have inside look new like this! Indeed, it is worth it, I recommend it!

There is no product from Koch-Chemie that is not super premium.
I used this specific one on external plastic scooters and on external plastic car parts.
It literally transforms them, lasts for months not days, while offering amazing shine on the car tires as well.

Very good for maintaining external plastics does not shine to emphasize the fact that it does not have silicone!!! I highly recommend it

The best on the market! It makes faded, black and they stay. Follow the process 2-3 times and it will be like it came out of the factory!!! Excellent!!!!

It's an awesome product! It spreads VERY easily and evenly with a small sponge like the one in my photo. It's a large quantity. Now we'll see how long it will last over time.

The best in its category. Plastic car mirrors, bumpers, and sinks, it made them not just "like" new, but literally new. Price-to-quantity ratio, didn't use much material. So it justifies its price. Still need to see its durability.

It does a very good job. The plastics return to a new condition. Just wipe with a simple sponge. The consumption is minimal, you don't need a lot of quantity on the sponge. With this packaging, I believe it will be enough for at least 10 times for my car. Ford Fiesta.

It is indeed for professional use but I bought it because it is worth the money for the size of its packaging and for the quality of the material. It makes plastic look like new both externally and internally.

Very easy to use. It requires a minimal amount, it is quite fluid and spreads easily with a sponge. The plastics I used it on were quite faded on a 15-year-old car. (It took about 24 hours to fully absorb) The result is dazzling, they really look like new. Having tried other products for the same job, I can say it looks better in all. As for the duration, time will tell and I will come back. However, with the amount needed, the package will definitely provide several uses. Very good-professional product, I would definitely buy it again!

It makes the exterior and unpainted plastics look brand new. Each application lasts about a year.

It does what it promises and also leaves a hydrophobic effect. Very good, I will buy it again

...dust magnet which is somehow embedded in the plastic and to remove it you have to exert force

Simply perfect.... I put it on the mirror's plastic two months ago and it endured cold and rain and it is still active...

Very good product. It has a long-lasting effect and gives you a deep matte black result. It protects against UV and is highly hydrophobic. Also, there is no need to wipe with a microfiber cloth after application, the product spreads evenly as it dries (assuming it has been applied with care). It requires attention when applying it on uneven surfaces such as front grilles, as the difference before and after is so noticeable that if you don't apply it everywhere, the difference is visible. You can comfortably use it on door rubbers as well, although personally, I use the top star for those. For those who have tried carpro perl, I consider pss better for exterior plastics and tires (although carpro perl is more flexible due to dilutions).

So far it gets 5/5. I applied it to a relatively new car where the plastics were not particularly damaged, although there were plastics like the mask or around the windows that had started to turn white. Of course, it made them black again, without much shine. I also did the sunroof seals. Application with a microfiber sponge without wiping afterwards. I didn't try it on the car tires as I had another product. I plan to apply it to the door seals as well. It seems like it will last a long time, so the bottle will definitely last for more than 1-2 years. You don't need a large quantity, just a few drops on the sponge and you cover a large area. It seems to have very good hydrophobicity and water slides off where you applied the product. We went on a trip and the dust on the plastics came off very easily with a finger, as if it was sliding on the plastic. I imagine it will come off very easily with pressure.