Written by Nordic Light Lab — the UK arm of a Scandinavian family of specialist light-therapy shops, including Lysterapi.no, Norway’s largest light-therapy store with over 10,000 customers. We sell the products we write about, and we say so openly.
Infrared sauna blankets are sold with some of the boldest claims in the wellness industry — detox, fat burning, “600 calories per session”. We sell one, and we are going to talk you out of believing most of that, because the honest case for a sauna blanket is good enough on its own.
The claims, sorted honestly
“Burns hundreds of calories” — mostly water weight that returns when you drink. Heat exposure does work your cardiovascular system harder than rest, but nobody should buy a sauna blanket as a weight-loss plan. “Detox” — your liver and kidneys do the detoxing; sweat is mostly water and salt. Relaxation, warmth, recovery and sleep wind-down — this is the real product. Regular heat sessions are deeply relaxing, ease stiff muscles, and the post-sauna drowsiness pairs naturally with an earlier bedtime. That is what you are buying.
Why the blanket format works
A built-in infrared sauna costs thousands and needs a room. Our Infrared Sauna Blanket (£429) rolls out on a bed or floor, heats you directly rather than heating the air, and rolls away afterwards. Through a British winter, the use case is obvious. It comes with our 90-day money-back guarantee — the honest way to find out whether the habit sticks for you.
How to use it sensibly
Start with 20–30 minutes at a moderate setting, 2–3 times a week, and drink water afterwards. Work up to 30–45 minutes if you enjoy it. Skip sessions when unwell, and check with your GP first if you are pregnant or have a heart condition — the same rules as any sauna.
Frequently asked questions
Do infrared sauna blankets actually burn calories?
Honestly: mostly no, not the way the marketing implies. The weight you lose in a session is almost entirely water, and it comes back when you rehydrate. Heat exposure does raise your heart rate and burns somewhat more than sitting still, but a sauna blanket is not a weight-loss device. Buy one for relaxation, warmth and recovery - not for the scales.
What is the difference between an infrared sauna blanket and a traditional sauna?
A traditional sauna heats the air around you; infrared heats you directly, so the experience is intense warmth at a lower air temperature. The blanket format means no installation, no dedicated room and a fraction of the price - the trade-offs are that your head stays out and you are lying still rather than sitting in a cedar room.
How often can I use an infrared sauna blanket?
Most people use theirs 2 to 4 times a week for 30 to 45 minutes. Start lower and shorter while you learn how your body responds, and always rehydrate afterwards.
Who should avoid sauna blankets?
Anyone who is pregnant, has cardiovascular disease, or takes medication affecting heat regulation or blood pressure should speak to their GP first. The same common-sense rules as for any sauna apply.
Is an infrared sauna blanket worth it in the UK?
If you love the post-sauna feeling and do not have access to one, yes - it is the cheapest way to get regular heat sessions at home, especially through a British winter. If you expect weight loss or detox miracles, no - and we sell them.