What it Does ​Apply hair color with confidence with this professional applicator bottle. The precision tip allows you to section your hair while applying color directly to the root. Imagine that? How to Use Measurements are built into the bottle, so you can see exactly how much color and developer you’re adding, for that ideal 1:1 ratio. Made from plant-based resin, because we’re all about greener options. Save it when you’re done and reuse it the next time you color. Ingredients: Reusable, Made from plant-based resin, Eco friendly color tool.