I bought the pastel silver set a little while ago and i absolutely love love love it! If you have platinum hair to begin with you can get whatever color perfectly, and I am so amazed!
Before this I tried all sorts of toners and color mousses to get the silver look, but all I got was purple, blue or lavender tinted hair which looked nice. However it was not what I was looking for.
I washed my hair with regular shampoo a couple of times before I applied the weekly treatment for the first time, and the result was exactly what I dreamt of! I use the daily conditioner about every other week or whenever I feel like I need a hint of color, and the deep treatment ca every month, or again, whenever I feel like it.
Yes yes yes, dude, get this stuff!