Hign-concerned Chemical:NoneBattery:BatteryModel Number:hair-growth-comb-518Item Type:Hair Loss ProductQuantity:1PCBrand Name:LANSSALOrigin:Mainland ChinaNumber of Pieces:One UnitSize:22*5*4cmPower supply:2* AA batteries(Not Included)Mode:Red Blue Light and VirbationProduct Name:Hair Growth CombFunction:Head MassageFeature:Infrared Electric Hair CombInfrared Electric Hair Growth Massage Comb Hair Scalp Care Anti-hair Loss Regrowth Treatment Vibration Head Massager Brush Features: 1.Stop hair loss and makes hair grow thicker, stronger and healthier 2.Help hair growth, inhibit hair loss, prevent hair loss 3.Vibration Technology to stimulate circulation 4.Improve the absorbency of hair follicles, prompt regeneration of the hairs. 5.Red 660 Nanometre Energy Diodes stimulate the deepest parts of hair follicles 6.Blue 470 Nanometre Energy Diodes regenerates surface of the hair follicle 7.Infrared heating to kill bacteria attached on the scalp, stimulating points on the head and accelerate blood circulation. 8.High-frequency vibration massage the scalp. 9..Improve hair follicle immunity, regulating oil secretion, improve hair quality. Specification: 1.Color: White 2.Material: ABS 3.Powered by: 2x AA Batteries (Not Included) 4.Usage Time: 5-10 minutes 5.Mode: Vibration with lights; Only vibration 6.Size: 4*5/22cm Package Included: 1 x Massage Comb