Laser Hair Therapy, is an FDA cleared, stimulating therapy for men and women that uses a process akin to the way plants use sunlight to grow. The laser device emits particular wavelengths of light down onto your scalp. Similar to a plants’ leaves would, your follicles absorb this light and transform it into energy, which in turn improves blood flow and stimulates cell metabolism. This can slow or reverse the miniaturizing process in weaker follicles, and result in faster, thicker hair growth.