Home-use Photobiomodulation Device Treatment Outcomes for COVID-19: Results Pre-Print Intranasal systemic photobiomodulation is the utilization of light energy within the 620nm-750nm (red light) range on the electromagnetic spectrum to irradiate the capillary-rich nasal cavity. Red light has less penetrative potential than near infrared light (750+nm), therefore a majority of the photons do not bypass [...]