I had coloured my hair black few months back and then I tried to colour it gloden but its didn't stay well, only the part of my hair on the roots were yellow and the black coloured part was still black so I went to the hair stylish and told her to colour it golden but ittured out to be a disaster because now the portion in front and roots of my hair is light yellow and the rest of my hair is not that golden so how do I reduce the dark golden hair in my root area of the hair to look normal? Suggest me