Hair Comb Massage For Women and Men: Vibration massage mode, vibration + red light mode, vibration + blue light mode for different needs. Help to massage scalp and head, nourish hair, promotes blood circulation and professionally strengthen hair cells to improve existing hair. 3 IN 1 Mode Powerful Functions: Scalp massager comb hair while promoting scalp blood circulation, making you more comfortable. It helps to reduce frizz, bring back smoothness and shine to your hair instantly.The soft infrared of the wavelength can help you enhance your blood circulation, so that the oxygen and nutrients can be sent to hair follicle, to prevent hair loss effect. Vibrating Massage Relax: With shock massage, you can relax and fatigue relief after a busy day. Help to promote blood circle, relax and fatigue relief. Frequent use can prevent from headache or intermittent headache. FRIENDLY DESIGN: One button operation for convenient using; Rechargeable electric hair massage brush, it can be carried along for using anywhere and anytime. Note: The electric hair comb massage brush is rechargeable. Besides, it doesn't make noise even though high frequency vibrations. If this device doesn't work, don't worry, there is no enough power then cause this issue. Just charge it for a while, it will work well.