Last updated: July 2026 · Reading time: ~8 minutes
Quick answer: An infrared sauna heats your whole body using far-infrared heat, producing sweat and a warming sensation. Red light therapy uses red and near-infrared LEDs at close range, with no heat and no sweating — it's a light-based routine, not a heat-based one. They work differently, suit different goals, and can be used as separate parts of the same routine rather than one replacing the other.
Search this comparison and you'll find the two lumped together constantly — often under a single "wellness recovery" umbrella with a long list of shared claims attached. In reality, they're built on completely different mechanisms, and confusing the two leads people to buy the wrong thing for what they actually want.
This guide breaks down what each one actually does, where they genuinely differ, and how to decide which one — or both — fits your at-home routine.
What Is an Infrared Sauna?
An infrared sauna uses far-infrared heating elements to warm your body directly, rather than heating the surrounding air the way a traditional steam or wood-fired sauna does. You sit or lie inside an enclosed cabin (or use a portable infrared blanket) for a session, typically working up a sweat as your core temperature rises.
What it delivers: whole-body heat exposure, sweating, and a warming, relaxing sensation — similar in spirit to a traditional sauna, just with a different heating method.
What Is Red Light Therapy?
Red light therapy uses LEDs — typically 660nm red and 850nm near-infrared light — held or worn close to the skin. There's no meaningful heat involved, and no sweating. The light itself, not warmth, is the point of the session.
What it delivers: a focused-coverage or larger-area light session, generally described by users as a mild, pleasant warmth from the LEDs themselves rather than the deep heat of a sauna, as part of an at-home comfort routine.
The Core Difference, Side by Side
| Infrared Sauna | Red Light Therapy | |
|---|---|---|
| Mechanism | Far-infrared heat | Red + near-infrared light (LEDs) |
| Sensation | Warm to hot, sweating | Mild warmth from the LEDs, no sweating |
| Typical session | 15–30 minutes | 10–20 minutes |
| Equipment | Cabin or portable heated blanket | Belt, mat, blanket, panel, or mask |
| Portability | Low to moderate | High (belt), moderate (mat/blanket) |
| Price range (AUD) | Mid-range to premium | Entry-level to premium, depending on format |
Neither is an upgraded version of the other — they're genuinely different tools built around different mechanisms.
A Common Source of Confusion: "Red Light Saunas"
Some products on the market combine both — an infrared sauna cabin or blanket with red and near-infrared LED panels built in. These "red light saunas" or "combo" units genuinely do both jobs in one session, which is where a lot of the category confusion comes from.
If you're comparing products, it's worth being clear about which of three things you're actually looking at:
- A standalone red light device — belt, mat, blanket, panel, or mask. Light only, no heat.
- A standard infrared sauna — heat only, no dedicated red/near-infrared LEDs.
- A combined "red light sauna" — both heat and dedicated LEDs in one unit, usually at a higher price point than either alone.
None of these is objectively "better" — it depends on whether you specifically want the heat-and-sweat experience, the light-only routine, or both in a single session.
Can You Use Both?
Yes — plenty of people build a routine that includes both, typically as separate sessions rather than at the same time. A common approach is a red light session on a specific area (a focused-coverage routine with a belt, for example) at a different time than a sauna session aimed at whole-body relaxation. There's no need to treat it as an either-or choice unless your budget, space, or time genuinely only allows for one.
Which One Should You Choose?
Lean toward an infrared sauna if: you want a whole-body heat-and-sweat experience, enjoy the ritual of a sauna session, and have the space and budget for a cabin or blanket setup.
Lean toward red light therapy if: you want a focused-coverage or larger-area light routine without heat, want something portable and usable while sitting or relaxing, or are working within a smaller budget or space.
Consider both if: you're building a broader at-home wellness routine and have the budget and space for each — they serve different parts of a routine rather than competing for the same slot.
Where Alpha Fits In
We'll be upfront: Alpha doesn't sell infrared saunas. Our range is built around red and near-infrared light devices — the Red Light Therapy Belt for focused coverage on a specific area, and the Red Light Therapy Mat for larger-area sessions — both running on the 660nm red and 850nm near-infrared pairing. If a heat-based sauna routine is specifically what you're after, that's a different product category than anything we make, and we'd rather tell you that plainly than blur the line. You can read more on how the light itself works on our how it works page, and more on the wavelengths specifically in our 660nm and 850nm buyer's guide.
If you're still deciding between red light device formats generally, our best red light therapy devices in Australia guide covers belt, mat, panel, and mask side by side.
Frequently Asked Questions
Is red light therapy the same as an infrared sauna?
No. An infrared sauna heats your whole body and produces sweating, using far-infrared heat. Red light therapy uses red and near-infrared LEDs at close range with no meaningful heat and no sweating. They're built on different mechanisms.
Which is better for relaxation?
Both are commonly used for relaxation, just through different sensations — the deep warmth and sweating of a sauna session versus the calmer, no-heat light exposure of a red light session. Which one feels more relaxing is a personal preference, not a settled fact.
Can I use an infrared sauna and red light therapy on the same day?
Many people do, usually as separate sessions rather than combined. There's no strict rule against using both in the same day as part of a broader routine — just listen to how your body responds and adjust if needed.
What's a "red light sauna"?
It's a combined product — an infrared sauna cabin or blanket with red and near-infrared LED panels built in, delivering both heat and light in one session. It's a distinct category from either a standalone sauna or a standalone red light device.
Does Alpha sell infrared saunas?
No — Alpha's range is red and near-infrared light devices only (belt, mat, and LED mask). If you're specifically after a heat-based sauna routine, that's a different product category than what we offer.
Which one should I buy first if I can only afford one?
It depends on your goal. If you want a focused, portable routine for a specific area at a lower price point, a red light belt is usually the more accessible entry point. If a whole-body heat-and-sweat ritual is the priority, an infrared sauna or blanket is the more direct route to that experience.
The Bottom Line
Infrared saunas and red light therapy get grouped together constantly, but they work in genuinely different ways — heat versus light, sweating versus none, whole-body versus focused or larger-area coverage. Neither replaces the other, and plenty of people use both as separate parts of the same at-home routine. Choose based on which sensation and goal you're actually after, not which one sounds more impressive.
This article is for general information only. The products discussed are general wellness devices and are not intended to diagnose, treat, cure or prevent any disease or medical condition. Results vary between individuals. If you are pregnant, photosensitive, have a cardiovascular or heat-related condition, or are using medication that increases light or heat sensitivity, please check with a qualified health professional before use.
