Bian Shi comb is very helpful to dredge the veins in the head, especially the 48 acupoints in the head. It is generally used to treat insomnia, dreaminess, neurasthenia, hair growth improvement, and blackness. The comb is easy to carry and has a good therapeutic effect on human health. When combing your hair, there will be some magnetic fields, which will have a thermal effect, constantly stimulate the human body, have a massage effect on the nerves and acupoints of the cerebral cortex, have a health care effect, and effectively promote blood circulation in the head.