I have a dark colored car so all the dust shows and where I live wind kicks it up and just sets on my car so I had to find a solution since I don't like washing my car every day.
got a clay bar kit the meguiars one that has a microfiber, 2 clay bars, and some spray quick detailer.
the quick detailer works really nice to get rid of the dust with a microfiber and get my car clean again. you can buy just the bottle if you want well worth it.