littlemissdd

have used Shaders and Toners before and had no reaction what so ever from them. (I did test it before)
I have only used them as a bit of a 'booster' just to brighten up my colour when Im nearly due to re-colour my hair again. Although I havent use it as a regular colour I know people who do and the colours are great, but they dont have a lot of grey hair so im not sure how good the coverage would be on grey hair.

There is not a lot of colourant in the packet but as you use it like a shapoo it does lather up well and does cover your hair (mine is shoulder length)

Good luck x