How to get dark hair color dye out of my hair?

So my girlfriend helped me color my hair to hide a few gray hairs coming in. Its usually a light to med brown, thought I might go darker. We used Loreal excellence creme ( Medium Brown). It actuall turned my hair into almost a dark redish brown, looks like I have naturally dark red hair! HELP! ...

Okay IF you have DARK hair as in it being brownish darkish and then you want to dye it blonde and then brown like an ash brown or light brown what color should it come out? I have a dark hair color it looks brown/black and I want to dye it but I want it to come out as a light brown blondish...

I naturally have darkish brown hair that gets lighter in the summer, then I got highlights, and one time bleach was used. I decided I didn't want so much maintenance, so I decided to dye it back to my natural color. However, the color now is SO dark, and I hate it! I bought a clarifying shampoo and...

So here's my (condensed) story. A bit over a year ago, I dyed my light blonde hair brown. I experimented w/ brown shades for about three to four months.... Reddish brown, blackish, dark brown, chocolate, light brown, etc. It was dyed about 7 times in a matter of fifteen weeks or so. It was still...