How to get blue/green dye out of my hair??

I've been dying my hair for 4 years now but I've always stuck with purple, pink, and mostly warm tones. I have not gone into the world of cool tones and I should've done research because blue is notorious for driving in your hair FOREVER. My hair is bleached but it's still a light brown on top and... show more I've been dying my hair for 4 years now but I've always stuck with purple, pink, and mostly warm tones. I have not gone into the world of cool tones and I should've done research because blue is notorious for driving in your hair FOREVER. My hair is bleached but it's still a light brown on top and blue underneath but dark blond without the dye. I'm planning on bleaching it again but I know that doesn't always do a whole lot and I don't want to leave the bleach in forever out damage my hair too much. I'm hoping for a light-ish pink color so I really need to get rid of this faded blue green color. Any tips before I bleach it?
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