Wash hair several times with a clarifying shampoo
Use a dandruff shampoo mixed with baking soda
Apply a vitamin C and shampoo paste
Use a color remover made for permanent hair dye
Try a bleach bath if hair is healthy enough
Apply warm coconut oil or olive oil before washing
Use anti-dandruff shampoo with hot water rinses
Repeat treatments over several washes
Deep condition after each attempt
Stop if hair becomes dry, brittle, or irritated
See a professional colorist for safer removal