I do not give off a lot of reviews, but since I'm really zufieden with this wheel cleaner is now here is my review. I drove about 8000km with the tires and so was accordingly much brake dust, partially burned on the top Alus. According to instructions sprayed, after the contact time (I let it work longer) hosed with water properly and the rims look again like the first day. Although a bit more expensive, but definitely worth it.