1650NM wavelength: the golden wavelength of newborn hair, which can penetrate the hair follicle and be absorbed by hemoglobin in the hair follicle to activate the hair follicle. 2Special designed to fight hair loss, stimulates and accelerates hair growth. Improves individual hair strand quality, thickness. 3180 degree rotational adjustable angle ensuring that the lampshade covers each follicle. Rotational knob to adjust the height according to the demand, and can remove the lamppost if necessary. 4Four wheel design makes it easy to move, 90pcs lamp chip reach each follicle and activate atrophic follicles. 5Effect: Before use (follicle atrophy) atrophy leads to thinning of hair and eventual shedding; Activate hair roots during use (stimulate hair follicles) to fight atrophy; After use (follicle resuscitation) thick healthy hair grows back.