I am naturally a mid-brown, very ashy, no warmth at all. At the moment it's dyed a sort of honey/caramel blonde (it was a tint, not bleach) but I have major roots showing. I fancy going a reddish light brown colour, I think something like this
Will this work on my dyed-blonde hair? Will it just go bright red on the dyed bits and be much darker on the (natural-coloured) dark roots? And isn't there something about going darker then lighter turning your hair green, or is it the other way around?! Is there anything I mustn't use?
I know itr's dangerous to mess around with hair colour yourself but I just can't afford the salon colour anymore.