I have naturally salt and pepper hair which I've been dyeing crazy colours for the last year. The latest colour (teal) is proving an absolute bugger to shift and even after using 2 boxes of Colour B4 I'm left with dull muddy looking greeny-blue grey hair (hawt). Pretty sure all the dyes (despite being semi permanent) have stained the cuticles.
I was thinking of doing a very gentle bleach bath, ideally it would leave my hair nice and light so I can dye it the colour I want to commit to on a long term basis (light purple).
Has anyone done this? Any tips?