Okay, so I have naturally brown hair but it's bleached blonde. However about a month ago I got pink on the under layer, which I liked at first, but now I'm incredibly sick of. It was supposed to fade after a week or two, but it's proving incredibly persistent. I was wondering if anyone knew of any color removal treatments that would return my hair back to blonde?
I'd really appreaciate any help.

Bleached hair is notorious for holding onto temporary, semi- or demi-permanent color. I think that's what's happened here.

What dye did you use? If it's a demi-permament, it might be possible to use ColorFix if it's not too light. Alternatively, it can probably be bleached out.

Take lemon juice and orange juice and mix it with conditioner it helps a lot!