My hair is in really bad condition. 20 years of home hair dyes, perms (it was the 90's
and a bout of post pregnancy hair loss have left it in an awful state. It used to be really thick and curly and in great condition. Now it's very thin and weak, breaks very easily and I'm very thin on top. 
I have to keep dyeing it now as almost all my roots are grey (at the grand old age of 34)!
It's been dark brown for about 6 years now, I can't really get it any other colour as they won't work over the dark brown. I'm trying to slowly get it a reddy auburn colour, so atm I have 2 tone hair, bottom half is dark brown and top half is medium red. 
I know in order to get the whole of my hair red it would have to be bleached first and I'm honestly not sure if a hairdresser would risk doing that in case my hair fell out? 