My hair

What is the process of dying my hair from blonde to all black

I have dreads and I have used bleach in my hair to dye it blonde because regular blonde dye doesn't turn my hair. Now I want my hair back jet black, someone told me I have to bye my hair red first then dye it black. They said if I just put black dye in my hair it will turn my hair green, is that true?
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The theory of that is normally true when going for brown results. You are in the clear though because your blond is still warm and because jet black covers everything else. Going jet or even blue black will give you full coverage not to worry. Just be sure you want to stick to that color for a while because black dye is the hardest to remove.
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