I've got shoulder length more or less one length hair (one layer slightly shorter than the rest so the lower layer flicks out) which I have coloured professionally a medium brown colour. I am crap at fitting hair appointments in and my re-growth is really really grey - I'd say maybe about 80% grey. I've been considering for a while just letting the grey grow through but I'd need some sort of interim colour on the remaining coloured hair as the line is so stark between the natural grey and the coloured brown. Anybody got any good tips on what to ask the stylist to do - what has worked for you? Any thoughts very welcome.