I bought it because it is ammonia free hair color ,and supposed to be less damaging for your hair. I had a good base for this - bleached hair, if your base color is not light it wont work. Great choice if you want to tone your hair,and get rid of brassiness. I mixed with with V20, left for 35 min as instructed. Too bad it washes out pretty quickly,besides that, it is a good option, good color.