Red light therapy has been shown to cause hair to regrow in the crown area and along the hairline, the most common places that men and women tend to lose their hair. These photons are absorbed by weak cells to encourage hair growth. It's widely accepted that the procedure is safe, tolerable, and less invasive than hair transplant surgery.
Red light therapy red 633nm and near-infrared 830nm LED wavelengths are used in many practices as devices that increase the blood flow in your scalp. This stimulates your hair follicles and improves their metabolism, encouraging re-growth and minimizing hair loss.
Clinical trials have shown that red light at 650 nanometers. can promote hair growth for both men and women who are balding. 660nm accelerates cell repair, stimulates cell metabolism and capillary blood circulation, and relieves pain. 850nm penetrates the skin to stimulate deep cells, improve cell vitality and regeneration ability, promote metabolism, and accelerate wound healing. Visible red light between 630nm and 660nm combined with near infrared light at 850nm helps activate hair growth in both men and women.