I dyed my hair today(2/1/12) with l'oreal casting crème gloss in auburn and it turned out pretty different from the box, it's super dark and kind of purple, I was wondering if there are any good ways to make it fade faster since it says on the box that it lasts up to 28 washes?
Or are there any products that remove the hair dye giving me back my natural hair color ?

Vitamin-C Tablets mixed with Lemon juice, mixed with your regular shampoo. It might take a couple of tries, but it takes a majority of the color out. :) Hope it helps! Sorry about your luck!