Hi, there! I have not been banded yet, but have had the rash problem on and off for years. The best cure I have found is straight Lotrimin. I dab a bit on the rash, and it clears up overnight most times. It seems to be the only thing that works, as the powders gum up over the course of the day. Be sure the area is very clean and dry before applying the Lotrimin. Just a thin layer seems to do the trick. Good luck!