Depending on your office culture, messy buns aren't always out of the question. There are some messy buns on this list that are more polished and, therefore, more professional. But, if you're unsure, I'd stay away from it. So please don't wear a messy bun to a job interview and keep it to your off time until you get a sense of the office style. If your workplace has a dress code, that makes it easy to figure out the rules, but ultimately, messy buns are probably not a good idea for a professional environment.