DD, 14, has light brown hair naturally, with fine bleached highlights.
She used a purple Manic Panic dye at home which was cute and left her hair in great condition.
It has now faded to a dull turquoise-y blue.
I bought a box of Colour B4, followed the instructions to the letter, used 2 boxes as her hair is long-ish. The rinsing seems to be key so we made sure that it was rinsed properly but it hasn't worked. The colour is a little lighter than it was but it's barely noticeable. It also hasn't done any favours to the condition of her hair so I really don't think we should try again.
What should we use? A caramel-y semi permanent dye? A toner? Something else?
We are in Scotland so no access to hairdressers for weeks.
Thanks in advance 