i have always suffered from the old lexus problem with brake dust. i had to clean the wheels practically every time i used the car. then on one trip to my favourite store - halfords
i have tried so many prducts and none of them worked, but this one really does. i now only have to clean the wheels when i clean the rest of the car, which is once a week normally. even when i drive in rain, the wheels don't get nearly as dirty, i would go as far as to say they are 90% cleaner than if i didn't use it and still washed them once a week.
i have been using it for a couple of months now and recommend it whole heartedly if you're like me and like your car spotless lol.