this may sound funny, but red is the hardest to keep up and the hardest to get out of your hair. i just went from red to a dark brown, and when my brown fades, i still see a coppery/reddish tone in there. there's always a bleaching option, but i dont like recommending people bleach. (very harsh on hair.) ask a salon specialist? with mine, i just dyed it right over the red.