This is my favorite go-to product for giving my brows some definition. The dark brown is a very natural brown that is easily buildable. I think its suitable for dark brown hair. The slanted shape of the eyebrow pencil makes it easy to make any kind of brow shape that is best suited for your face. This is one of the products that I throw into my purse as I head out because it is very portable and easy to touch up my brows with.