My hair has a green tint from dyeing it blond highlight then brown what can I do??

Your hair turned green because blonde hair lacks pigment and depending on what you used and how blonde your hair was green can be a common result when not done by your stylist! Without seeing your hair it is hard for me to advise you however I can tell you that when going darker over blonde a pigment holding agent called a filler is normally used along with a color formula that contians some gold or copper pigment! Now this doesn't mean your hair will end up gold or copper it will just neutralize the color! I guess what I'm getting at is thnst you need2go2 your salon!because as I said I cannot tell you what to do without seeing you and knowing all the circumstances! I'm sorry I'm not much help girl! In the mean time a malibu treatment will take most the green out! So don't get too upset! You can buy one at your local beauty supply store! And once your color is darker like you want it I highly recommend using a color conserving shampoo and conditioner to avoid fading! Your hair is very pourous and may fade quickly since the cuticle of your hair has been lightened it will not be able to hold on to the pigment very well!