I have an 11 mile commute 22 miles round trip. I keep soap, shampoo, baby wipes and deodorant at my office. I do not ride every day as my schedule does not permit it. However, on the days I do not ride I bring clean clothes. I keep a pair of black and brown shoes in the office at all times. I also have two or three pairs of pants, shirts and some ties. I have a Topeak rack and slide on pack which contains food and other things needed for the day. In the Chicago area, it is just sometimes too hot and humid to wear work clothes. I always shower and shave at home. When I arrive at the office I cool down for about 30 minutes before cleaning up in the rest room and putting on my dress clothes. You just need to get a system going. You'll feel better if you change into fresh clothes. Some days, if it's not too hot, you won't need much clean up at all.