This electric scalp massage comb features red, blue, and purple light therapy modes to promote hair growth and reduce hair loss. It has six EMS teeth combs that generate microcurrents to improve blood circulation in the scalp. The comb also has three levels of high-frequency vibration to stimulate the scalp and boost cell metabolism. The detachable liquid storage tank makes cleaning simple. The comb has eight soft silicone multi-contact point teeth, providing a gentle yet efficient massaging action that soothes the scalp without creating irritation.