I use INOA 7.3 with INOA 20 volume developer on my salt and pepper hair. When I have finished coloring my roots, I pull it through my hair. It produces a rich brown color with auburn and caramel highlights. It does not stain or burn my skin, and it leaves my hair soft, shiny, and healthy looking. I use it on my eyebrows to match my hair color, and it does not stain my skin.