Not where I live. I am clean, the towel is clean, and it has a lot of open space to air dry between showers. Wash every 3 or 4 showers just in case the house is more humid than I think to avoid the possibility of mildew if the towel gets bunched up.

When I travel sometimes it is every time if the location is really humid since air drying there doesn’t work very well and they frequently have hooks that don’t let the towel spread out.