Totally love it while transitioning to grey!
I'm transitioning to grey, but still have some brassy tones from lightening my dark brown hair to blonde.  This product is so much stronger than regular purple shampoo, and it's completely neutralized those brassy tones to a grey color.  I've been using this product since I started my transition last May.  That's one year ago, and I'll continue using it when my hair is completely grey to keep it a cool fresh color.
Rating: 5 stars