Are saunas good for your skin? For most people, regular sauna use is likely to be good for the skin. Heat increases blood flow to the skin, sweating helps rinse the surface, and a small controlled study found that regular sauna users had a more stable skin barrier and better skin hydration (Kowatzki et al., Dermatology, 2008). Popular claims about collagen and anti-ageing are less well supported, so this guide separates what the research shows from what is still unproven.
That said, not all saunas deliver equally. The temperature, construction materials and air quality inside your sauna all shape the experience. Many wood adhesives are formaldehyde-based, which is one reason we build without glue or MDF.
Traditional Finnish Sauna, Built for Australians
Clear-grade Japanese cedar. No glue, MDF or wood filler. 9 kW Harvia or HUUM heater. Built for regular, comfortable sessions.
SEE THE GENESIS →How Sauna Heat Affects Your Skin
When you enter a traditional Finnish sauna, typically 70–100°C, your skin and core temperature rise and your body responds quickly. Blood vessels in the skin dilate, skin blood flow increases markedly and sweat glands activate. Within minutes you are sweating heavily.
The proposed skin benefits come through a few mechanisms: increased blood flow to the skin, sweat rinsing the skin surface, and adaptation of the skin barrier to repeated heat and cooling. The first two are well understood physiology. Claims that sauna heat boosts collagen production in people have not been confirmed by good studies.
Does Sweating in a Sauna Clean Your Skin?
Sweating does help rinse the skin surface. Before you think about pores, though, think about what you are breathing: some saunas use glued panels, MDF or particle board, and many adhesives are formaldehyde-based. Formaldehyde is classified by IARC (the World Health Organization's cancer agency) as carcinogenic to humans, which is why material choice matters.
In a sauna built from real timber without glue, the focus can stay on the session. At temperature, sweat output increases sharply, which helps rinse sebum and surface debris from the skin. In a controlled study of 41 healthy volunteers, regular sauna bathing was associated with a more stable skin barrier, higher hydration of the outer skin layer and faster recovery of skin pH (Kowatzki et al., Dermatology, 2008). Many people also find their skin simply looks and feels fresher after a session.
The key word is consistent. One session produces a temporary glow; the barrier changes in the study above were seen in regular sauna users. For a full breakdown of frequency recommendations, see our guide to how often you should use a sauna.
Can Saunas Help with Acne?
Heat dilates blood vessels and drives circulation to the skin's surface. In the short term, this can reduce the appearance of inflammation and give the skin a clearer, more oxygenated look. For some people with acne-prone skin, rinsing the skin after heavy sweating may help keep pores clear.
The honest answer: saunas are not an acne treatment, and heat and sweat can aggravate acne for some people. If you have acne, speak to your GP or dermatologist before relying on sauna. And critically, the post-session protocol matters. Rinse with cool water immediately after leaving the sauna to remove sweat and surface impurities. Leaving sweat on the skin can irritate it.
If stress contributes to your breakouts, a relaxing routine may help indirectly. Many people find sauna relaxing, although the evidence on sauna and stress hormones is limited.
Do Saunas Reduce Wrinkles and Support Anti-Ageing?
This is where the evidence is thin. Collagen is the structural protein responsible for skin firmness and elasticity, and production naturally declines with age. Some laboratory research suggests heat can influence the cells that make collagen, but there are no good studies showing that regular sauna use reduces wrinkles in people.
What is better established is the effect of heat on blood vessels. A Japanese study of repeated thermal therapy in men with coronary risk factors found improved endothelial (blood vessel lining) function (Imamura et al., Journal of the American College of Cardiology, 2001). That study used a low-temperature sauna and measured blood vessels, not skin, so any benefit for skin ageing remains a hypothesis.
Sun protection, not smoking and a good skin care routine remain the proven anti-ageing basics. Sauna is best seen as a pleasant addition, and a home sauna makes regular use far easier than occasional visits to a commercial facility.
The Sauna That Does Not Compromise
Psycle Clean Air active ventilation. Blue-light-free amber lighting. No-glue Japanese cedar construction. 5-year structural cabin warranty.
EXPLORE THE GENESIS →Are Saunas Safe for Eczema and Psoriasis?
Both conditions involve compromised skin barrier function and chronic inflammation. Sauna's effect here is conditional: it can help some people, but only with care.
Some people with eczema or psoriasis find moderate heat soothing between flare-ups. For others, heat and sweat trigger itching and make symptoms worse. There is little research on sauna for either condition.
The protocol adjustment for sensitive skin conditions: lower temperatures (70–80°C rather than 90°C), shorter sessions (10–12 minutes), and immediate moisturisation post-rinse. If you have an active flare, skip the session. If you are in remission and want to try sauna, speak to your doctor or dermatologist before establishing a routine.
The construction of your sauna also matters here. Chemically treated timber, synthetic linings and adhesives can release volatile compounds when heated, which is unwelcome for anyone with reactive skin. Untreated timber and glue-free construction avoid that concern.
The Sauna Protocol That Maximises Skin Benefit
Hydrate Before You Enter
Drink 500ml of water in the 30 minutes before your session. Sauna-induced sweat loss is significant, and dehydration leaves skin feeling dry and tight.
Session Duration: 15–20 Minutes
At typical traditional sauna temperatures, 15–20 minutes is a common session length for experienced users; beginners should start shorter. Longer sessions increase heat stress and dryness.
Use Löyly Mid-Session
Pouring water over the stones raises humidity, makes the heat feel more intense and deepens the sweat response. For more on this technique, read our guide to löyly and why it matters.
Cool Rinse Immediately After
A cool shower rinses off sweat, sebum and surface debris and helps you cool down.
Moisturise While Skin Is Still Warm
Apply your moisturiser soon after your cool rinse, while your skin is still slightly damp, to help lock in hydration.
Repeat 3–4 Times Per Week
Any skin benefit from sauna is likely to come from regular use rather than one-off sessions. Choose a frequency you can keep up comfortably.
Traditional Sauna vs Infrared for Skin Health
Infrared saunas operate at 50–70°C and heat the body directly via light waves rather than heating the air. Traditional Finnish saunas typically operate at 70–100°C and heat the air, with the option to add humidity through löyly.
| Factor | Traditional Sauna | Infrared Sauna |
|---|---|---|
| Operating temperature | 70–100°C | 50–70°C |
| Sweat volume | High, full-body thermal response | Moderate, lower ambient heat |
| Humidity control | Yes, löyly adjustable | No, dry heat only |
| Skin research | Small studies (e.g. skin barrier) | Very limited |
| Research depth | Decades of Finnish population data (heart and longevity) | Limited, shorter-term studies |
| Construction toxin risk | Variable, depends on materials | Variable, depends on materials |
For skin, the main practical difference is that a traditional sauna lets you adjust humidity through löyly. Neither type has strong skin-specific evidence. For a full comparison of both modalities, see our breakdown of traditional sauna vs infrared.
Why the Sauna You Use Changes the Outcome
If you plan to use a sauna regularly, the quality of the sauna itself matters.
A sauna built with chemically treated timber, synthetic adhesives and poor ventilation is a different environment from one built with untreated Japanese cedar, no glue and active ventilation. At high temperatures, those material choices affect the air you breathe.
The Psycle Genesis is built from clear-grade Japanese cedar with no glue, MDF or wood filler, and 316 marine-grade stainless hardware. It uses a 9 kW heater, either the Harvia Vega or the HUUM Drop with 60 kg of stones, for stable, sustained heat. Psycle Clean Air active ventilation brings in fresh air, and lighting is blue-light-free amber. For outdoor installs, the optional Colorbond steel roof kit is required for the structural warranty.
This is not a feature list for its own sake. These details make regular, comfortable sessions possible for years. If you are considering a home sauna and want to understand what real construction looks like, start with our complete home sauna buyer's guide for Australia.
If you want to understand what the research says about sauna beyond skin health, our guide to sauna benefits in Australia covers the cardiovascular and recovery research.
Frequently Asked Questions
Are saunas good for your skin?
For most people, likely yes. Sauna increases blood flow to the skin and sweating rinses the surface, and a small controlled study linked regular sauna use with a more stable skin barrier and better skin hydration (Kowatzki et al., 2008). Claims about collagen and wrinkles are not well supported. If you have a skin condition, speak to your doctor or dermatologist first.
Can sauna cause skin damage?
Sauna can cause skin irritation or exacerbate certain conditions if misused. Prolonged sessions without adequate hydration dry out the skin rather than benefiting it. Very high temperatures can temporarily worsen eczema or psoriasis flares. The post-session routine (cool rinse, then moisturiser) is as important as the session itself. For people with reactive or condition-prone skin, starting with lower temperatures (70–80°C) and shorter sessions (10–12 minutes) reduces risk.
How often should you use a sauna for skin benefits?
There is no evidence-based frequency for skin benefit. The skin barrier study looked at people who used a sauna regularly, so a routine you can sustain, such as a few sessions a week, is a sensible approach. For a full frequency guide across different health goals, see our article on how often you should use a sauna.
Does sauna help with acne?
Sauna can temporarily improve the appearance of acne-prone skin by dilating blood vessels, increasing surface circulation, and mechanically flushing pores through sweat. It is not an acne treatment, and heat and sweat can worsen acne for some people. Always rinse after a session, and speak to your GP or dermatologist about persistent acne.
Is sauna good for anti-ageing?
There is no good evidence that sauna reduces wrinkles. Repeated heat therapy has improved blood vessel function in small studies (Imamura et al., 2001), and better skin hydration has been reported in regular sauna users (Kowatzki et al., 2008), but neither proves an anti-ageing effect. Sun protection remains the most effective anti-ageing step.
Does the sauna material affect skin benefit?
It can affect the air you breathe. Adhesive-bonded MDF or particle board can release formaldehyde and other volatile organic compounds when heated, and formaldehyde is an IARC Group 1 carcinogen. Untreated timber with no glue avoids that concern.
Ready to Build This Into Your Routine?
Free kerbside delivery to metro Sydney, Melbourne, Brisbane and the Gold Coast. 5-year structural cabin warranty. Saunas are built in production batches, with in-stock units when available.
SHOP THE GENESIS →References
- Kowatzki D, et al. Effect of regular sauna on epidermal barrier function and stratum corneum water-holding capacity in vivo in humans: a controlled study. Dermatology. 2008;217(2):173-180. PubMed 18525205
- Imamura M, et al. Repeated thermal therapy improves impaired vascular endothelial function in patients with coronary risk factors. Journal of the American College of Cardiology. 2001;38(4):1083-1088. doi:10.1016/S0735-1097(01)01467-X
- Crinnion, W. J. (2007). Sauna as a valuable clinical tool for cardiovascular, autoimmune, toxicant-induced and other chronic health problems. Alternative Medicine Review, 12(1), 84-96. (General reading; a narrative review.)
