Very valid points about becoming a dust magnet with a wax. Customers with black cars I try and steer them away from waxes. If your wiping it down once a day now, you might go to 3 if you use a traditional wax, where I live anyway. In florida, either the daily rain in the summer, or the pollen, is a nightmare for trying to keep a black car "Right". Enjoy your powerlock, replace when needed and save yourself the money and time for something else.