Ordinary Combs have sharp edges that damage the cuticle, roughen the scales and cause unhealthy split hair. In fact, such combs actually undo treatments of even the best shampoos! Roots Combs have rounded teeth that massage the scalp and stimulate natural oils in the hair cuticle. This keeps scales smooth, so hair stays strong and healthy. Always and only use a Roots comb and hair brush. Then watch your hair bounce back to life.