+22 Bleaching Over Black Hair Dye Ideas. Carefully follow all instructions and enlist professional help to avoid potential damages such as breakage and discoloration due to incorrect application methods or harsh chemicals used during bleaching. Web 4 how to bleach black hair:

Then, you can proceed with the bleaching process. This method works best on freshly dyed hair, so try this one if you only just tried out black dye. 4.2 examine your hair ;