Wella SP System Professional Silver Blond Shampoo 250ml

I have been using this product for about 4 years now. It is a great shampoo that tones your hair without leaving it too dry. It isn't a harsh purple shampoo like some other brands. I often leave it up till 30 minutes as a toning treatment once a month (other times I will use it as a normal shampoo and don't leave it in too long) to remove some of the more brassy tones and gives your hair a nice refresh.