Laser Comb Science

There is a lot of controversy about the laser comb and whether or not laser hair restoration is a reality or just a scam. One thing for certain is it is not magic. You can not pass a wand of light over your head and then hair will miraculously appear. That is just not how it works. If there is hair growth after the use of these items then there must be a reason for that to happen.
Most hair loss in men is caused by male pattern baldness. This is a result of the build up of DHT, a matabolite of the male hormone testosterone, on the boundary between the hair follicle blood supply and the cells in the hair follicle that manufacture the hair shaft material. The laser hair treatment claims to be able to reverse this process and allow the follicle to begin its manufacturing duties again. The laser comb is sold as a device to increase the growth of the hair. The light enegy is supposed to penetrate the skin and excite the hair bulbs into growth. This is called laser hair growth.
What possibly could be happening is the heat from the light source may be exciting the follicle and allowing better blood flow. It is a known fact that heat helps speed up blood flow that is why you add heat to and injury. It increases the blood flow and allows more oxygen and nutrients to flow to the affected area. This increased nutritional flow may allow the follicle to work better at retrieving oxygen and nutrients.
None of this has been proven scientifically because studies are still being done to find out exactly how the laser hair comb and laser hair brush work. Once this information becomes available it will be interesting to see what is actually working to grow hair if hair does increase under the use of this device.