I have a black 'flash' in my hair - I neglected to do it when pregnant and with newborn ... did it recently and the dye lasted very poorly. My natural colour us mid brown with one or two greys and my hair holds dye - even red - well.
Any recommendations for a long lasting black box dye? I'm confident with home dyes, permanent is fine.
For the rest of my hair, after trying more expensive brands, I now use Poly Tint which is a really basic one from Wilkos- but it lasts! Anyone used it in black?