So I have black hair, I usually dye it with the colour xxl black blue colour, I know from experience that I can get it to a ginger orange with colour remover, I really want as bright as possible blue or purple hair but after doing some research on colour theory, both these colours on orangey brown will go greeny brown.
I don't really want to bleach my hair and even if I did I will only get it safely to a lighter orangey yellow.
So could I put a bright red dye on orange, making it red, then put a blue or purple on top of that to make it purple?
I think it's impossible to get it blue without starting off nearly white
Any product or colour theory help would be much appreciated
Thank you