What color will cover Green Hair?
What Colors Ggo Well with Green Hair?
Anything red will neutralize it (cancel each other out and leave a neutral tone). How do you choose red? It depends on the level of lightness or darkness the Green hair is. If the green is a sea foam-type shade, choose a light red. If it's the color of grass, go for a medium red. If it's a dark green (think the Joker), then choose a dark red.
Btw, this is done on damp hair, not dry. After about 10 minutes, do a test strand (wipe the color of a small section to see how it's looking). If it's good, rinse, shampoo, and condition. If not, work the color back over that spot and let it process longer. Repeat every 5 minutes until fully neutralized.
If that sounds too complicated, go see your local Hairstylist.