1.Multifunctional massage comb, vibration massage + red and blue light therapy + nano atomization, three effects in one, multi-faceted care for your hair health. 2.Vibration massage function: three gears can adjust the intensity, improve the metabolism of hair follicles, promote blood circulation in the brain, help hair growth, and prevent hair loss. 3.Nano atomization: used with hair growth liquid, it can promote hair to absorb nutrients better, promote hair growth, and make your hair thicker. 4.Red and blue light therapy: care for the health of the scalp, strengthen hair , and improve hair problems, such as thinning hair, oily hair, hair loss, and broken hair. 5.This massage comb can effectively relieve head fatigue, relax the mind, relieve stress, and has a certain effect on relieving nervous headaches. Charging method: USB Vibration gear: 3 gears Light therapy mode: red light/blue light Other modes: Nano ion atomization mode (can pour 15ml liquid) Frequency of use: 2-4 times a day Power cord length: 50cm Colour:black Material:plastic Package Contents: 2 x massage comb 2 x USB Charging Cable 2 x English User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.