Sorry I didn't want to hijack someone else's fred.
I have bought the extra strength colour B4 on the back of reading some of your advice.
I've been colouring my hair for a few years to cover white hairs which I have on one side of my forehead mainly (widows peak?) It is naturally dark brown but for some reason the ends are now a fake looking black whereas near the roots is an orangey dark brown. My white hairs are more orangey and not being covered properly.
I'm hoping that the colour B4 will get rid of the black and let me dye it brown again and then maintain the white bits/roots. My question is, do I have to go round with the after effects until I can use a permanent dye again? I have bought a light ash brown nice and easy to use as soon as I can.
So worried this is going to be a disaster, but I look like a witch at the moment.