I have used every self hair colour brand out there, this brand wasn't something i would use again.
I have thick long hair and the Napro bottles seemed smaller than other brands so it would take 2-3 bottles to fully saturate my hair, and after using the conditioner it provides, my hair would still be dry and frizzy. i hated the smell too. Yuck. The instructions are clear and easy, packaging is ok, but there are definitely better products out there.
This is the first time I have used this dye, it was on special at the supermarket, and it being it so long since I had I dyed my hair, I thought what the hell. I picked that shade chocolate brown, which is within a couple of shades of my natural hair colour. The instructions were easy to follow and there was plenty of dye for my hair which is shoulder length. It washed out well, and the conditioner smelt lovely & nourishing and there was plenty of it. The conditioner was in a sachet, so once opened I ended up using it all opposed to other dyes that have tubes with lids where I could get than more than one wash sometimes. I did really like the colour, it has given my hair life and a couple of weeks down the line it has lasted well. About a week later I did put in an argan oil hair mask as my hair did feel a bit straw-like/brittle compared to my pre-dye hair.