I was a little skeptical thinking what a thick hairy brush could do more than a micro fiber cloth... But I was wrong, I was simply amazed with the results. Jopasu Duster literally wipes your car clean off thin dust slightly thick mud as well. I have been using it for the past three months and have already washed the duster twice, there has been no change on the way it has been working from day one. I have just been following the the instructions that came with the duster. Keep using the duster until it stops picking up dust before it needs a wash. If after the wash the duster still does not pick-up dust, use the Jopasu Duster Rejuvenator to get back to life...!!