My car is white and I have not detailed it for at least 3 years, so it had a lot of orange spots on it from iron contamination. This cleaner cleaned most of it after just one application. On top of that, seeing just how much other contamination that was not visible to the naked eye was shocking. After rinsing off, I went over the car with clay but it really was not necessary, the clay bar was still clean after doing the whole car. This really works great! I used about 1/2 bottle on a full size car.