I'm getting ready to try the Menzerna IP and FP on my wifes car and after a quick try out on the hood of her car I noticed the polish is dusting big time. I'm wondering if I'm using too little polish or if I'm working it too long. The small area that I did turned out like glass but the dusting was so bad I thought it may have been dust that blew into the garage but after I got in the drivers seat to pull it out of the garage to get a better look I could see it was white powder (the car is silver). Is this normal? If it is what can I do to keep the dusting down?