Roots Only Applicator tool is not just for touching up your roots with hair color anymore (although it still works great for coloring Roots Only). With our newly designed, durable applicator comb (100% guaranteed not to leak) you can now use the Applicator Tool for medicated shampoos, conditioning growth oils, hair conditioners, hair color, anti-itch scalp solutions, lice medication and any other hair treatment solution required to get down to the scalp and roots.