Abstract: A light emitting device for a human having a scalp with hair, the device includes a flexible arcuate base configured to contour a portion of the scalp. The base has a width between 20 mm and 120 mm and includes an interior and an interior surface. At least one array of teeth is coupled to the interior surface, each tooth in the at least one array of teeth being pressed against the scalp when the base is contoured about the scalp. Each tooth is configured to part the hair when the at least one array of teeth is pressed against the scalp. An array of at least one of light emitting diodes and laser diodes coupled to the base proximate the at least one array of teeth.

Abstract: A hand-held device for hair growth stimulation. The device parts the user's hair while the light source radiates user's exposed scalp. Non-light emitting teeth are uses to part the user's hair in front of an associated light source. An optional timer can be used to control the length of time the light source is activated. Parallel rows of teeth are aligned with a central row of light beams and part the individual's hair to form furrows in the user's hair as the device is combed through the user's hair. The furrows create an unobstructed path for the light beam to reach the user's scalp. Various embodiments use laser and/or non-coherent light sources to provide light energy to the user's scalp. An optional removable teeth assembly can be used to allow repair or sharing of the device.