Infrared Saunas utilize beneficial rays to provide a wide array of natural health benefits. Different types of light interact with human bodies differently. Generally, smaller wavelength of light, such as ultraviolet, are more harmful and can damage living cells, while the most beneficial lights are those whose wavelengths are closest to red light. Far infrared light reaches just beyond visible red, and is utilized in Far Infrared (FIR) Therapy. By emitting far infrared rays, portable infrared saunas allow your body to detoxify through its normal process of sweating in a more comfortable and less costly process than a steam sauna. Heat therapy from portable saunas warms your body directly, allowing gentle, radiant heat to penetrate 3.5 inches beneath your skin to sooth your blood vessels, improve circulation, and promote fast healing, among a very broad variety of other health benefits.