This hair massage comb effectively tightens the scalp, provides deep care for a variety of scalp problems, and promotes scalp health. It is equipped with 72 round teeth and 630nm wavelength red light to knead and massage the scalp, deeply nourish the hair roots, and help create lush and luxuriant hair. Three scalp massage modes are available to promote scalp micro-circulation, soothe nerves, and bring a more comfortable rest experience. The 6ML large-capacity liquid guide tank and 8 roller balls design help to evenly squeeze out the hair care liquid, nourishing the scalp and hair in all directions.