I have cleaned everything with this. And when I say everything, I mean EVERYTHING!
I have not seen any damage to any material.
FROM=20ml/Lt--TO=200ml/Lt
I dilute it with DEMINERALIZED water, €1 for 4L from the supermarket. I pour a little and add 250ml cleaner and keep it to fill the vaporizer. I have also made a 0.5L vaporizer with a dilution of 150ml/Lt for tougher jobs..
Besides the car obviously—furniture, sofas, carpets, some eternal stains on marble and mosaics, aluminum frames, any device in the house can be cleaned with this, mobiles, controllers, consoles, screens, TVs, mice, etc., etc

It removes any kind of dirt, especially nicotine and oils, with very good performance. I don't have professional experience but I believe it is much better than the average cleaning products for this type of dirt. You need to be very careful with dilutions and timing because it dries and leaves white marks on plastics. It cleaned the car headliner from tons of nicotine using a foamer. I would prefer if it was scented a bit better, like Polstar.

Very good. It helped me a lot and on faux leather, which it made shine with just one quick pass. Of course, I also used it on a fabric office chair. There, it needed more passes, but it did a very good job

Excellent product, it does what it promises. It cleans upholstery and plastics perfectly from dirt and dust.

Honest fabric cleaner...with a light lemon scent, in short, it does what it promises. I cleaned car seats with the help of a SPOTCLEAN PRO machine and the seats became like new. I highly recommend it.

Very economical packaging, I made a medium to strong solution and cleaned a seat that was already quite clean for maintenance, I liked that the scent is subtle and the foam is very contained. I haven't tried it on something very difficult but I trust the comments of others.

It was initially used diluted 1:25 for cleaning the car's interior plastics and did an excellent job.

I had some stains on the back seats that wouldn't come out no matter what... I tried active foam and was even considering a deep clean... I thought I had nothing to lose so I gave it a try. Guys, the results speak for themselves—it removed every stain and made the colors more vibrant. I used it at a 5:1 ratio, so quite strong, in a spray bottle... I sprayed (used more on the stains) and then scrubbed with a soft brush and let it dry... Now it will be tested on a car after a vacation, dirty with sand... I have three products from this company and they are all 10/10... (Try the liquid wax too, you'll thank me!)

I was reading the comments about its dissolving rate and they seemed exaggerated to me... However, I bought it to try it out... it's not like it costs a fortune... At first, I used a ratio of about 1 part product to 50 parts water... I started cleaning and doubted whether it was any different from what I've tried so far, from the supermarket and elsewhere... But when the water in the bucket almost immediately turned black and finally the seats (beige color with heavy dirt) dried... the result was at least incredible... I highly recommend it...

I had tried various cleaners to clean car seats without success. This particular one, at a ratio of about 1:10, removed the stains with a little scrubbing.

I will give 5 stars to the store because after many orders online, this one was delivered before I hit enter.
I will return for a product evaluation.
Update
A week after the first comment, I'm here!!!!
The product is worth every last cent you spend. Without much fuss, wherever I applied it, it cleaned SUPER EASILY.
I diluted it 1/5 as it said on the bottle.

Excellent product for multiple uses, both for upholstery and fabrics as well as for plastics. The solubility ratios make it very value for money.

Excellent fabric cleaner with a nice scent. I expected nothing less from Koch-Chemie. I use it diluted with water and a soft brush with horsehair from MaxShine.

The dilution that was done was 1 to 5, very good product cleaned stains perfectly on seats and upholstery in the car, does a very good job and in the end leaves a slight pleasant smell. I will definitely prefer it again when it runs out but I will also try it with a smaller dilution.

I expected nothing less from this company. Excellence for experts as advertised. Carpet seats clean effortlessly!! Check out the video below.
https://youtu.be/5I1kWvbfzLA?si=uYAcksj6Py0RdGsq

It's okay for car seats - carpets. It needs a little dilution with water 1 to 5, follow the instructions closely because if you use too much, it foams.

I bought this product after reading various reviews. I had dirty seats from the sea and from sweat. I put liquid and water in a small spray bottle, sprayed on the dirty spots, and scrubbed with a brush. Then I wiped with a clean cloth. It did a good job, the stains came out, I just think it needs a bit of a stiff brush or an electric brush for better results. A plus is the nice scent it has

It works very well for cleaning plastic interiors, it doesn't make them shiny, so you need something else for finishing touches. For seats, it's perfect, you can adjust the cleaning depending on the dirt and the smell

I bought it from a video detailing. It is very powerful, leaves a nice scent, cleans deeply, and when you finish, it has a shiny finish. I put 50 ml in 1.5L of water, then I scrubbed it with brushes. Finally, I did plastic carpets, seats, belts, and the entire trunk. It requires gloves and a mask.

It has never let me down, whether used in combination with a simple cloth or a drill/driver with a brush and a wet vacuum cleaner. Easy to use, because of the dilution it lasts a long time and has a nice scent.

Excellent product, it cleans tough stains as long as someone follows its instructions. Due to its high dilution, it is very economical.

Very powerful, removes tough stains. However, you cannot do it 'locally' or at least it needs to be diluted a lot in this case, because it leaves a line (outline) once it dries. I do the whole chair and that way the faint line does not remain in the application areas.