Communicate

Communication and trust is key. If the other party understands and trusts what you are saying, you will be successful at getting your point across.
Being a hairstylist, being honest and straight forward works best. Clients have ideas and wishes that can be expressed but not necessarily performed. Listening to what they want and explaining what can safely be done will work only if the client trusts you.
Whenever there is a problem with your style or service, don't just leave and go somewhere else! I can guarantee that there is a communication gap that could easily be resolved once both parties choose to listen to one another, work together ,and meet each other halfway. Leaving and going somewhere else to complain doesn't look good for any of the parties involved. The news carrier is usually worse than the news giver!! Take your time to resolve the situation first and then if there is no resolution, then you can move on to another stylist that can suit to please. Remember, if you don't deal with your issues before you move on, that issue just might come up again!!