The list below can definitely help you if you want the same haircut as home. These basic words can help you to explain your wishes. Most of the Chinese hairdressers don’t speak English so it is very difficult to explain for a foreigner.
You can also combine these words with an old picture of you or find a hairstyle and colour you like in a magazine or on the internet. Always watch the mirror, in this way you can see what the stylist is doing and clarify any confusions before it becomes a mistake.