I bring 2 sets of clothes (shirt, pants, underwear, socks) both basically the same, but 1 designated as trail, and the other as camp (dry)clothes.  The shirts are typically the button down lightweight nylon long sleeve shirts popular at Cabelas, but for mid summer, I'll bring a decent wicking t-shirt.  After a few days of bog slogging, the trail set gets "laundered" in a ziploc bag with a squirt of camp soap.  Rinse twice in the bag, and it will all smell so much better and be good for several more days.  Usually I'll do this once for an 8-10 day trip, but I also swim most every day in my trail clothes.  Consider it a pre-wash.