I used it (iced chocolate) the other night. I found that once you have it on your head, it sets quite 'hard' - not easy to massage in as the instructions advise you to. If you have shoulder length or long hair you will need two boxes.
When it came to rinsing the dye out my hair didn't feel as smooth as it does with other dyes. However, once dried, my hair was shiny and soft, the colour was nice, at least it didn't go black like some brown dyes can!
I've washed my hair once since dying it & it looks shiny & healthy.
Karma - how dark did the Dark Brown turn out was it more of a black?