Are infrared saunas safe? An honest UK guide

Reasonable question, deserves a straight answer: for most healthy adults, used sensibly, yes — infrared saunas have a good safety record. The air temperature is far gentler than a traditional sauna (45–60°C against 80–100°C), sessions are self-limiting (you can open the door and step out at any second), and the failure modes are the boring, avoidable ones: dehydration and overdoing it. Here's the full picture, including the parts of it that deserve genuine caution.

The main real risk: it's just heat

Nearly everything on this list is heat management, the same as any sauna, hot bath or hot yoga class. You'll sweat more than you expect at 55°C — noticeably more than you register at the time. So: water before, water after; skip alcohol beforehand entirely (it impairs the blood-pressure responses that keep you comfortable standing up after heat); and if you feel dizzy, light-headed or nauseous, that's the session over — out, cool, drink. No pushing through. The one-line session rule: start at 10–15 minutes and build gradually.

Who should talk to a GP before starting

This is standard heat-exposure advice, and we'd rather over-say it than under-say it. Check first if you: are pregnant (raising your core temperature on purpose is generally advised against in pregnancy — your midwife or GP is the right person to ask); have a heart condition, uncontrolled blood pressure, or low blood pressure that makes you faint-prone; take medication affecting blood pressure, heart rate or sweating (beta blockers, diuretics, some antidepressants and antihistamines); have a condition affecting heat sensation (neuropathy, some diabetes complications) — if you can't feel excessive heat reliably, the safety valve is missing; or have any condition where your GP has previously mentioned heat as a factor (MS heat sensitivity being a known example). None of this means "no sauna" — it means the call isn't ours to make from a blog post. Two minutes with someone who knows your history beats guessing.

Children: infrared cabins are designed around adult thermoregulation; young children handle heat less well and shouldn't use one. Older children only with an adult in the cabin, short sessions, and your GP's blessing if there's any doubt.

The EMF question, in plain English

Infrared panels are electrical devices, and like every electrical device — hairdryer, laptop, the wiring in your walls — they produce electromagnetic fields. The industry answers this with "low EMF" stickers, which we'll be blunt about: an adjective is not a measurement, and no cabin is zero-EMF. The honest framing is that household-appliance-level fields are what's involved, sat with for 30–40 minutes. We haven't measured our own cabins — we don't own an EMF meter, and we're not going to dress up someone else's numbers as ours. If we buy one, we'll publish the readings in full: numbers, distance from the panel, meter model. Until then we make no EMF claims at all, which you may notice is rare in this market.

What infrared is not

It's not UV — infrared sits on the opposite side of visible light, and doesn't tan or burn skin the way sun does. It's not a medical device, whatever some marketing implies: the better-evidenced benefits are real but modest, and anyone selling a cabin as a treatment for a disease has left the evidence behind. And it's not a weight-loss or "detox" tool — sweat is water and temperature control; detox is your liver and kidneys' job.

The sensible-use rules, all in one place

Hydrate before and after. No alcohol before. Don't use it if you're unwell or feverish, and don't nod off in there — set a timer. Start 10–15 minutes, build gradually to 25–40. Come out if you feel wrong — immediately, not at the end of the timer. Cabin positioned per the manual, plugged straight into the wall (no electrician needed, but no extension leads either). GP conversation first if you're in any group above. That's the whole discipline — it's short because the risks here are mostly avoidable ones, provided you respect the heat.

This article is general information, not medical advice — if in doubt about your own situation, your GP wins every argument with a blog post, including ours. Questions about the cabins themselves? WhatsApp us or start with the Kajo range.