US Patent 7722656 Device and method for stimulating hair growth

The current invention includes a device and method for the promotion and stimulation of hair growth using one or more light sources such as a diode laser, each light source operating in the infrared range at wavelengths in a range from about 2500 nm to about 10,000 nm and at a low wattage, collectively less than about 1000 mw, with the power level typically being in the region of 500 mw. A diode laser operating in this range will have a greater dispersion rate than heretofore, thus requiring fewer diodes to cover the same area of scalp with less power required per diode laser.