The best and cleanest way to apply hair coloring, hair dyes and scalp treatments directly to the roots. Pack of hair comb bottles made from HDPE material. Squeezable to help you do the necessary treatment smoothly without frustration. Applicator Comb Bottle 3-pack Empty Plastic Applicator Comb Bottle 3-pack Empty Plastic. Easy Squeeze Bottles for Hair Color DIY Oil Scalp Treatment. Leak Proof Recyclable Bottles Made from BPA-free Plastic Material Note: Use a pair of scissors to trim the head for wider holes. Very easy to cut and adjust the diameter to dispense large volume.