I brush my car every weekend, from inside and outside. Thought so good now I order this car shampoo. The car had slight soiling such as dust from the site etc. The car was previously hosed stubborn dirt on to soft. After that I treated the car with Meguiar's Gold Class Shampoo Car shampoo 473ml. One way before the car was treated with freshly carnauba wax. Thus, a good cleaning is given, after drying by hand saw no ugly water stains. Also I had the surface of the car a lot smoother than before before. By and large it's a great product.