How can you get gray dye from black dye?

Currently, there is no way to dye hair black without the use of dye.

That's not possible. You'll have to lift the colour then dye it brown.

Dying hair when using two completely different colours is never easy. Some times when people do dye their hair such drastic colours (though it doesn't seem that way) end up with a completely...

Okay well Unless the black hair dye was a semi or a wash in wash out you wont be able to get it out of your hair. Basically any hairdresser would put a good semi permanat on it which would lift the...

It would go black