Can I Put Red Dye Over Black Hair?
Technically, you can put red dye over black hair; however, to achieve the desired result, you may need to undergo a bleaching process to lighten your black hair before adding the red dye. This is because red dye tends to come out a lot brighter and vibrant on lighter hair shades. If you do decide to dye your black hair red, remember that it will take a longer time to fade compared to other types of hair colors.