I didn't really believe the hype, but this has worked for me, although I can;t quite pinpoint how. I have quite a bit of grey in light brown (hairdressers call it dark blond) hair which shows particularly in the fringe. I used to have a half head of highlights but I've been growing them out as they make my hair horrible. I also really don't want to dye my hair anymore and prefer natural products - but I'm not fooled by rubbish and most companies that claim they're all wonderful do seem to have some rather suspect ingredients. Anyway, that's another story.... I was a bit concerned about trying this as I still have some blond highlights and my hair is lighter than the recommended shade, so I did a strand test to make sure my hair wouldn't turn green. It didn't but I couldn't see much impact on the strand. I mopped up the excess water out of my hair after shampooing and rinsing with Kerastase Satin Bath 2, and applied quite a bit and combed it through while still in the shower. I cleaned my hands off (they look pretty black at first but it comes off ok with a loofah) and clipped my hair up and got out of the shower as I wanted to leave it on for 15 minutes. Because I did it this way, I didn't get a mess in my shower at all. While wet, I could still see the greys and thought it hadn't done anything, but once dry it did look better. I found the conditioning effect OK. Since then I've applied it twice a week for about 20 mins each time, and while you can still see my grey, it is blended in more, and the blonde highlights have got a bit darker, making for a more coherent hair colour. So, to sum up - nothing drastic, quite a bit of work, but worth it to me. I think I'll continue applying it and down my highlights out. I really want to return to my natural hair as it feels better, and I'm enjoying not being plagued by split ends anymore.

I was overall very disappointed with this product. It left my hair looking dull, flat, and muddy. It seemed to take away all shine and leave behind patchy, flat, darker color. I did try this a few times, a few different ways- tried diluting it with regular conditioner, leaving it on longer, shorter, etc. It never produced very satisfactory results for me. And for the price, I was expecting more. John Freida's color glaze conditioner works better. Actually, for best results (that are much cheaper) you are better off making a homemade toning conditioner- that will actually produce visible results with shine.

Right now I'm undecided about this product....I've only used it a couple of times, but I can't decide if it works as well as the Madder Root conditioner did...This definitely stains my hands though. I'll edit this review later when I've had a chance to use it more...

My hair leans warm naturally and I really dont like how that looks on me. I always have to go pretty ashy. My hair person recd this to me. I bought it today, tried it tonight, and I can say that it makes a big diff! I probably only had it in for 4-5 mins. Next time I might try putting it on when getting out of the shower and leaving it on for 10 mins, then returning to the shower to rinse.
This did a great job of doing just what it says: taking the warmth out, depositing cool. Per the other reviews, I knew this would stain and to be careful. I was careful and nothing too crazy happened. I'm a fan, and will see myself using this maybe once a week to help with my warm-leaning tone.

This color deposit conditioner is really good!! It actually deepened my dark brown hair after it faded badly to a rich deep brown shade. For the reference I have naturally medium brown hair that I highlighted-bleached and then dyed chocolate brown. Ot also detangled my hair nicely and left it soft, strong, and silky. Shiny too. My only problem is that I really had to use a lot to get my hair covered but my hair is kind of long and very thick. On the plus side I only use it once a week or every other week so in the end it does last me a suffient time. It saves me money in the long run because it lets me prolong coloring my hair for 2 weeks and getting my hair done is like $200. Most importantly it keeps my hair vibrant and beautiful.