What Is Off-Gassing—and Why the Relax Sauna Stands Apart

When people talk about off-gassing, they’re usually referring to one of two things—and both matter when it comes to your health.

First, there’s off-gassing from materials—like the fumes released when plastics, nylons, adhesives, or treated fabrics are heated. Many infrared saunas on the market use synthetic interiors or glue-based construction that can release harmful VOCs (volatile organic compounds) like formaldehyde, toluene, and benzene right into your breathing space. That’s not detox—that’s exposure.

Relax Sauna is different. Our materials are carefully selected and tested to ensure zero harmful emissions when heated. The reflective tent fabric may look high-tech—and it is—because it’s engineered by NASA to remain stable and inert even under intense far infrared (FIR) light. That means you’re not breathing in toxins from your sauna.

Second, there’s off-gassing from the body—the good kind. This is what happens when your body finally starts releasing long-stored toxins: petrochemicals, heavy metals, BPA, phthalates, mold byproducts, and more. These compounds are stored in fat and tissues, often for years, and don’t come out easily.

The Relax Sauna’s focused FIR frequency penetrates deep into your cells, gently mobilizing these toxins and encouraging their release through sweat and respiration. It’s not uncommon to notice a distinct smell—sometimes plasticky, metallic, or sharp. That’s not the sauna—it’s you, finally letting go of what your body couldn’t process before.