gaco

After washing my car the other day i noticed after drying it it had hairline scratches all over it! I use a chamis cloth to dry it always rinse before washing it but still scratches! the car is a black 93' 400 sel I realize it's not a new car but whats up with the scratches? I think I cake pretty good care of the car I've tried scratch and swirl remover, imperial glaze, etc. but the scratches are still there. if anyone knows what I can do to make my car look smooth, minus the scratches I would appreciate it!

thanks!