Red Light Therapy Hat Cap for Hair Regrowth 120 Led Infrared LightRed 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