i Looove these little color bugs! its like hair chalk but a fancy version! And they really do the job well and also work on dark hair. I got myself a purple one cause i also have some purple streeks in my hair and this just adds to it if i want more color on certain days. All you have to do is rub it onto the hair you want colored and bang its purple hehe and then it washes out when you wash your hair! All Kevin Murphy products are Cruelty free as well as sulphate and paraben free so its good for your hair!