I bought the Silver and the Pink in these. I really like them. Great value and fun to temporarily change the colour of your hair. The silver is particuarly good at 'toning' blonde tones
Both shades the shampoo is very intense looking in colour. The pink is bright pink, and the Silver is a black/green shade. Like others I applied this to dry hair, rather than shampoo'ing. Left for about 5-10 minutes.
I used the Silver on my brassy blonde tones and it very effectively took some of the yellow away and left me with a more ash shade. I applied the pink, and it turned my brassy tones a nice chestnut/dark auburn shade.
On my daughters naturally light auburn hair, the pink gave her a really pretty rose gold look.
They are temporary, and continued use I think I'd find them quite drying, but they are effective, and followed with a good conditioner, my hair felt great. They didn't leave any residue colour after a few washes with regular shampoo. Price and performance - they're really great!