This is a non-laser intranasal light therapy model. The Vielight 810 Infrared's focus is engineered centrally around the brain in comparison with our other intranasal models. It complements the other two models of shorter wavelengths which are more effective for circulatory and immune system related conditions. The 810 nm near infrared wavelength penetrates deeper into tissues and is absorbed better by the central nervous system. Brain cells respond just as well as other cells in the body to photonic energy. (Link) (Link) : Before and after QEEG images show the Vielight 810 inducing restorative activity in the brain per 25-minute session. Our intranasal devices combine solid state technology along with intranasal diodes built from transparent high impact polycarbonate to ensure quality and durability, turning this into a lifetime investment. Note for users near-infrared red light is invisible to the naked eye. Additionally, it is engineered to pulse at 10 Hz.