Ok so for Detail Spray you should wipe it off once, flip the towel over to get the left over and buff off slight hazing.
As far as linting, that all comes to how you wash the towels... Use cold water, a non-scented detergent (preferably with no dyes), and tumble dry with no heat. There are some good videos out their by a MF Towel manufacturer but I don't think I'd be allowed to post them here.