I bought this from the Chemical Guys site. The other reviewer is correct, be careful with this stuff as the green gets everywhere. It does wash out for the most part but still. So far, it appears to do the job very well. I drive 160 km round trip for a work commute and even after a couple days in winter, the rims barely have a hint of dirt on them. This is in contrast to plain cleaning, which after 1 short drive on winter roads will have the rims dirty again.