You are a sole trader, if you give some of these Insurance companies a call they may well have cover for Hair.
It is difficult when you are starting up getting everything organised, so I do sympathise with you, but there are a lot of threads on here regarding Insurance and a search will help you to find them. Yes, they may not be specifically for Hair, but as I say speaking directly to the Insurance Companies will give you the information you need.
It is also best to stick to the one thread for this, as starting 3 threads for the one subject causes all sorts of confusion.