Infrared Sauna Myths: What Marketing and Sceptics Both Get Wrong

Updated July 2026. Infrared saunas attract two kinds of nonsense: overblown marketing claims from sellers, and overblown fears from sceptics. Both deserve debunking. Here are the myths we hear most, from both directions.

Myths from the Marketing Side

“Infrared saunas detox your body”

Sweat is ~99% water and salts; your liver and kidneys do the detoxifying. The real benefits are circulation, recovery, relaxation and sleep — full breakdown in our honest sauna detox guide.

“You'll lose weight”

Scale weight drops after a session because you've sweated out water — it returns when you rehydrate. Sauna use raises heart rate like light exercise, but it is not a weight-loss device.

“Infrared cures [condition]”

Any seller pitching a sauna as a medical treatment is a red flag. Heat exposure has genuine, studied physiological effects; “cures” is not among them.

Myths from the Sceptic Side

“Infrared isn't a real sauna — it doesn't even get hot”

The air stays at 45–65°C, but infrared heats your body directly — core temperature and sweat response match a much hotter traditional cabin. Different mechanism, same deep sweat. The full comparison is in our infrared vs traditional guide.

“Infrared radiation is dangerous”

Infrared is simply radiant heat — the same wavelength band any warm object, radiator, or the sun emits. It is non-ionising and nothing like UV or X-rays. The legitimate spec question is EMF from the electrical panels, which is why low-EMF certification matters — all our cabins use low-EMF heaters.

“They cost a fortune to run”

The opposite — 1.5–3 kW draw means £0.35–£0.75 per session, a third to a quarter of a traditional sauna. Worked figures in the running costs guide.

“You need special wiring and building work”

Most 1–2 person cabins plug into a standard 13-amp socket, need no plumbing or ventilation work, and assemble flat-pack in a couple of hours. Only larger cabins need an electrician — see the electrics guide.

“Cheap ones are the same thing”

Sub-£1,500 imports typically cut EMF shielding, panel power, timber quality and UK warranty support. The cabin shape is the same; what's inside the walls isn't — buying advice in the Best Infrared Saunas UK guide.

The Honest Summary

An infrared sauna is a comfortable, cheap-to-run way to get regular heat exposure at home — genuinely good for relaxation, recovery and sleep, genuinely not a detox machine or medical device. Browse the full range or call 0330 133 6617 with questions.

FAQs

Is infrared sauna radiation harmful?

No — infrared is non-ionising radiant heat, the same band emitted by any warm object. The spec worth checking is low-EMF certification on the electrical heater panels.

Do infrared saunas actually make you sweat?

Yes — deeply. Direct body heating produces a sweat response comparable to a much hotter traditional sauna, despite the gentler 45–65°C air temperature.

Are infrared saunas a gimmick?

No, but some claims about them are. Heat exposure benefits (circulation, recovery, relaxation) are real; detox, weight-loss and cure claims are marketing.