Hi my hair was dyed blonde then brown now it appears to be green what color shoul I use to reverse this prosses?

Did you dye it green or did it turn green...

You need to use a red base color the same level as your Hair mix it with some shampoo and wash you hair with it you may let it sit on your hair for about 2 min to get out the green.

If you use a brown color on bleached blonde or light hair, it will turn your hair green. Because when you bleached your hair, it stripped away the red pigments. Therefore, you must to dye your hair a red shade first and then apply your desired color. The green cast can be neutralized with a red base color. It's best to go to the salon and have them do a corrective color.