What happens when you use Colour B4 on ‘fashion shades’ of hair dye..
.... I’m ginger.
Red, purple, blue and vivid black pigments in hair dye stain the hair cuticle, and Colour B4 can't remove all of the staining. The results can be surprising if you ailed to read the instructions thoroughly...
Luckily I did and, in all honesty, I like the results. I'll stay like this until the roots become a real problem, then I'll continue the lightening process