Is it bad to dye hair black?
It’s true that dying your hair dark has a different effect on hair than if you were to dye it a lighter colour or bleach it. … The formulas used to lighten or bleach strands can cause the most damage as the process is incredibly complex and changes your hair the most. That’s not to say going dark doesn’t have its cons.
Can you put brown hair dye over bleached hair?
Dyeing bleached hair back to brown isn’t hard, but it does involve more steps than your average dye job since you’ll need to add warm tones back into your hair.