Easy to carry: these root comb applicator bottles are lightweight, portable and easy to carry, easy to store and lightweight, so you can easily remove them for outdoor use. Reliable material: these comb bottles are made of high-quality PE material, which is not easy to break, lightweight and easy to carry, as well as washable and reusable. Easy to use: simply fill the hair dye bottle with your pre-mixed hair colour and use the pump handle to allow the colour to flow through the comb head. It does not stick to your hands when applied. Scale design: the head of the root bottle is equipped with a comb that is easy to use and has a scale that shows you the progress of the colour at any time and makes it easier to refill. Wide application: the hair dye applicator brush can be used on any occasion, e.g. at home, beauty schools and hairdressing shops, and you can also take it with you when travelling.