Both NIR and FIR are types of electromagnetic radiation, similar to visible light, radio waves, and X-rays. They’re categorized by their wavelengths:NIR (Near Infrared): ~750-1400nm — Often used for therapeutic light applications.FIR (Far Infrared): 3000-50,000nm — Commonly used for heat-based wellness therapies.The term “radiation” can sound concerning, but it simply refers to energy traveling in waves.
It’s important to note:Shorter Wavelengths (e.g., X-rays, Gamma Rays): Higher energy, and prolonged exposure may pose health risks.Longer Wavelengths (e.g., Infrared, Visible Light): Lower energy, and typically considered safe when used as intended.Infrared radiation, when used in saunas, operates at wavelengths that are too long to have the same high-energy impact as X-rays or gamma rays.
Instead, these wavelengths are designed to provide effects like gentle heating (FIR) or light-based stimulation (NIR), which are associated with wellness benefits.