... :The special structure of comb tenoning,make the hair dye through the comb tenoning and no contact with scalp,it is greatly improved ... foam and fixativefixer foam appeared in the interval of the comb teeth with equal quantity)3.Convenient to use:safety,economical,efficiency ... ,non-stick on scalp and do not fade,comb with fragrance,it's can comb and dye by yourself,no side effects to ...