Head Jog R combs have smooth rounded teeth which massage the scalp & keeps the hair and cuticle smooth making hair strong & healthy. (Ordinary combs have razor sharp teeth. Also the rough edges between the teeth act as razors, damaging the hair cuticle making the scales rough & can therefore cause unhealthy hair with split ends). Perfect for use at the basin to remove tangles in the salon or at home to gently detangle your hair!