I'm constantly recommending this product to people trying to strip color from their hair with minimal damage. If you're struggling to remove color I highly recommend leaving this on your hair for 10 minutes like a mask. Two of these treatments was able to pull majority of the dark blue permanent dye from my blonde hair. All that remained was a barely noticeable pastel mint hue. My friend used this to remove bright red dye from her hair and it was back to the brown she had dyed over. Just make sure to condition in between (ion conditioning packets work wonders)