From what I learned in my cosmetology class, professionalism is behaving appropriate to a business setting. we had this whole lesson on how a professional is someone who treats others with respect, is positive, polite, and they avoid disclosure. I think the word beauty expert would describe your arguement more. A beauty expert is more based on your success in the industry, people see you do good work, that you are confident in your abilities, and you there are very few things they might not know. You can be a professional and not be right or know some things in fact 80% of retaining clients in the beauty business is based solely on personality, your image, and your business/people skills and 20% on talent. I mean of course people don't want t go to someone who can't answer any questions or can't do their job properly. I think a professional doesn't have to know all the answers but they should know how to get those answers if they don't have them, and also be willing to continously learn things they might not know in order to better service clients.