Expert Q&A for How to Dye Dyed Black Hair Red Without Bleach

You can, but you will need to remove the black dye with bleach or a color-removing kit before you add the red dye.

Yes, but you will need to remove the brown dye first; otherwise, the brown can make the red dye look muddy.

You can, yes, but it responds to dye differently than other hair colors. I'd recommend that natural redheads see a professional for color instead of trying to dye their hair at home.

Depending on the type of color that was used you may be able to use a color-remover to lift out the black dye instead of bleaching. This only works on permanent color that contains no stains, only chemical tints.