Patent ID: 8518029

Claim:
A hand held hair treatment device for the stimulation of hair growth on the scalp, which device comprises: a housing which includes a handle portion and a head portion; a plurality of hollow tines, each tine having a proximal end affixed to the head portion, a longitudinal length extending from the head portion and a distal end terminating in a tip section formed from a soft and flexible material; a light source disposed within the housing and configured to output light, wherein the light source is a low power laser having a wavelength ranging from about 600 nm to about 1000 nm, and an intensity ranging from about 1 mW/cm 2 to about 150 mW/cm 2 , a light emitting diode having a wavelength ranging from about 620 to 690 nm, and an intensity ranging from about 1 mW/cm 2 to about 150 mW/cm 2 , or a combination thereof; light guide means for channelling the light from the light source through the tines and along a light guide means axis; and lenses which are located 2 to 10 mm from the distal ends of the tines; characterised in that the lenses are configured to vector light which is incident upon them transversely to the general light guide means axis, spreading the light in an outward direction from the distal ends of the lines and upstream of the tip section.