With silver grey running in my family and dark hair , it becomes an utter frustration when it starts showing through. I absolutely loved the coverage of this hair dye it was almost instant and 3 weeks later still not even a grey in sight!! It was so easy to use and it didn't have a chemical smell too it at all. Having natural curly hair that frizzes its important to me to have a hair dye that nourishes it and doesn't dry it out and that is exactly what this hair dye did. 3 weeks later my hair color still looks amazing!! My hair is still shiny and that mask omg had enough to use twice and my hair is so smooth and soft because of it!!!!