my hair is very grey indeed - i started going grey in my early 20's and i am 50 now. I have been paying over £50 every 5wks at local salon. The colour is lovely but i can see my roots through after only 2weeks. This is a new salon and their colours are better believe it or not - its just my hair grows fast !I just cannot afford to continue paying this amount out.My only option is to go back to home colouring (which I hate) as my hair ends up patchy. Do others colour the whole head and not just roots to ensure even coverage. any help would be lovely thank you