How Do You Fix Green Blue Hair?
The best way to fix green or blue hair is to use a color correcting shampoo or treatment designed to neutralize those tones. A mixture of tomato juice and baking soda can also be applied to hair and left on for up to an hour to help remove unwanted color, followed by a hydrating hair mask to restore moisture. It’s also essential to avoid over-washing with hot water and to use sulfate-free shampoos to prevent further damage to the hair. If the problem persists, it’s best to seek the help of a professional hair colorist.