I bought it for 10 euros. I wash it with a sponge by hand. It cleans well, doesn't produce much foam, and the foam doesn't dry immediately. With three caps, I covered an SUV 5008. It leaves a nice shine that lasts, and the car doesn't easily collect dust. I don't see anything negative, and for its price, it is very honest

Quite good with a lasting shine it leaves. The only negative thing about it is that it doesn't create as much foam as the cheaper shampoo from Wurth that I used before.