If so, what brand was the dye? I have very very dark brown hair, almost black. I dyed it tonight with a box dye to a red purple colour, however you can hardly notice it! Has anyone used a red shade or a purple on dark hair successfully? Thanks
Dark hair colours like black are no pigment colours so nothing over rides them but you get a tinge instead. If it's dye colour that is dark you need to strip it leave a few days and if your natural hair is light enough you can dye over the top. The other option is peroxide it then red over top but that would be a last resort.
Some box colours include lighteners which would work better for dark hair. I think it bleaches it slightly so the colour takes better. Not sure which brands do that though, Schwarzkopf maybe. I think the permanent ones are more likely to have that additional aspect to it, rather than the semi's.