In an attempt to cover my greys, I has my hair dyed at the hairdresser about two months ago... but they dyed it way too light (I have medium brown hair and ended up a sort of mousy ginger). I expressed my concerns and they put a toner on it to fix it, but over the weeks it faded and my hair looked worse and worse. So on Saturday I went to another hairdresser to try to get it rectified - I asked to have it dyed back to my natural colour (showed them my roots and lots of pics of me pre-dye). But it has gone the other way and I am now way way too dark (it is almost black!). Once again, I said that I wasn't happy but they were pretty dismissive and wouldn't correct it.
So now I have almost black hair and I HATE it. Is there anything that I can do to fade it (bearing in mind that there is other colour underneath)? I have found recommendations for using Head & Shoulders but these were all for semi-permanent home dyes... has anyone had success in fading permanent dye?