Unfortunately, it did not work on my hair. I left it on for up to 15 minutes, but I didn't see any difference in color change or reduction of yellowing. It dries out the hair quite a bit, so it definitely needs good hydration afterwards, like a mask or conditioner. Being a blonde for years, I consider a shampoo good when it works within the first two minutes! I would not recommend it and I would not buy it again.

One of the best silver shampoos I have tried. Even when I haven't used it for many days and the shade of my blonde hair has become dull and tends to darken, after just one use, the shade noticeably brightens and takes on a grayish appearance.