How does the FireLight® Sauna compare to a far-infrared (FIR) sauna?Updated 4 hours ago

All saunas aim to raise your core body temperature, but how they do it makes all the difference.

Far-infrared (FIR) saunas use longer wavelengths (typically 3000+ nm) that are absorbed mostly by water, which means they primarily heat the surface of your skin. This can make sessions slower and less efficient, often requiring long preheat times—sometimes 40 minutes or more. FIR light also doesn’t activate photobiomodulation, because our bodies don’t have light-sensitive receptors (chromophores) for those wavelengths.

To compensate, some FIR saunas add red or near-infrared LED panels. But LEDs are flickery, narrow-spectrum, and lack the therapeutic heat and broad-spectrum harmony of incandescent light.

Our FireLight® Sauna uses primarily near infrared (NIR) incandescent light (700–1500 nm), which penetrates deeper into tissue, raises your core temperature faster, and delivers full-spectrum radiant heat—just like sunlight, but without the UV. This supports real photobiomodulation, full-body detox, and deep cellular rejuvenation.

In short:

• FIR: Slower, surface-level heating. No photobiomodulation.
• FireLight®: Deep heat, fast sessions, real light therapy.

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