In ash blonde hair how to get green out?

i just went through this. here's what to do: mix three parts lemon juice, one part deep conditioner, apply to hair while wet. wrap with towel or heat cap and let sit for one hour. rinse thoroughly. the green tint should be gone but it will lift the blonde one shade. your hair will actually be shinier and bouncier. if there is still some residual tint, reapply a second time and leave in for half an hour. this also works for unwanted grey/blue/purple tints on dyed ash blonde color. good luck!