text: works for the most part
  
  I had bleached my whole head and then dyed over it with a black box dye a few months ago. I then went and had highlights put in all over my head. A few weeks later I put blue/green Arctic Fox hair dye on my hair and it would not fade out. I used this stuff with Olaplex No. 3 and it lightened TREMENDOUSLY all over, removing the green and blue parts as well as lifting the dark box dye. However, after a day I noticed a green tint to my hair. Every day it gets worse and I have used the color extractor twice now, with the same results. My hair is also getting darker where the box dye was. This is a great product it just doesn't seem to last.