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?

Wash it more then u normal would and make sure its not a color care shampoo when you do!

Wash your hair a lot! If you can bear it, wash your hair in dishwashing liquid (sunlight or something), it is harsh so it strips the colour out faster.