If you're able to go to Sally's look for color oops. I LOVE it. I seem to go from black to blonde over and over and with out color oops that wouldn't be possible. It's a little on the pricey side about 11$ a box here.. And I usually need about 3. My hair is just a little passed my collar bones. They also have other color strippers but I haven't had a good experience with them. Also if you use color oops keep in mind the smell is completely normal 😂 smells like straight sulfur.

@twinmommy523, it didn't turn a different color. My biggest worry is it turning green

If you're looking for kinda a diy method rather than a box or store method I've used peroxide. Works okay. Makes your hair kinda dry after so might need to condition extra.