I had one for 20 years('88-'08). Then I thought I'd clean it in Wool Lite. What a mistake! I ruined it. It never worked well again. Just pushed around the dirt/dust but, didn't absorb it into the fiber strands any longer. So, I went out and bought another one.
I love the California Car Duster. I have used knockoffs and they don't work anywhere near as well. CCD doesn't scratch my black car. But, it doesn't replace washing either. It's only for mild dust or keeping the car dust free throughout the day after you have spent hours cleaning/polishing and maybe the next day(if left outside) after some dust has settled on the paint. Great for garage queens!
I also love the California Water Blade. I have used knockoffs as well and they're not as good either. It's the "T" edge of the California Water Blade that zips off the water from the vehicle. I use it when cleaning the windows on the house too. Then polish the house windows to remove streaks.
I don't use the California Water Blade alone. I still dry the vehicle with microfiber towels afterwards. The CWB just gets me to the towel drying sooner. It doesn't replace drying completely anymore than the CCD replaces soap & water.
I like to wash my vehicles, zip'em dry w/CWB & finish towel drying w/ some quick detailer(when not spending the whole afternoon on the vehicle).
Always, when towel drying, always start out with a damp towel, never dry. I always keep my towel/shammy or whatever, soaking in a bucket of hot water. Sometimes soaking in hot water with a bit of fabric softener(very little)! Then wring out tightly, shake open the towel, fold into a small(er) square and then spritz Quick Detail, Show Time, Wax-as-U-Dry or what ever quick product you like(not wax) onto the towel and go over the whole vehicle as if you were drying the vehicle.
Removes water spots, streaks etc. And puts on a nice day to day shine without spending all day.
Apply more product to the towel or even to the paint, what ever make you happy