How do you get bad hair dye out of your hair?

if its darker than your natural colour, then the best option would be to go to a professional salon and have the dye stripped. However this is very damaging to your hair and you have to wait a period of around 5 weeks before you can colour your hair again. Also, depending on the length of your hair, this can be costly. Another option would be to simply dye over the top. This can be bad for your hair also, as it is best to wait a period of about 5-6 weeks between homekit dye jobs. You could also go to the salon to have another dye put through. However from personal experience, i would recommend getting the dye stripped as it is the best option in the long run and well worth the extra cost.