Sauna and Infrared Sauna for Skin: Benefits, Risks and Evidence
What research says about regular sauna use and skin barrier function, whether infrared saunas help aging skin, heat-related risks like melasma and rosacea flares, and safe use.
Saunas are popular for relaxation and wellness, and some claim they make skin look younger. The short answer: a small study found people who used saunas regularly had a more stable skin barrier and better skin hydration than non-users, but there's no good evidence that saunas reduce wrinkles. Heat can also worsen rosacea and melasma. Treat the sauna as an occasional comfort, not an anti-aging treatment.
What the research shows
In a controlled study of healthy volunteers aged 20 to 49, people with regular sauna exposure showed a more stable epidermal barrier, higher stratum corneum hydration, and faster recovery of water loss and skin pH after sauna, plus lower forehead sebum (Kowatzki et al., Dermatology, 2008). The study was small and compared habits rather than randomizing people.
Traditional vs infrared saunas
| Traditional sauna | Infrared sauna | |
|---|---|---|
| Heat source | Heated air and stones | Infrared lamps heat the body directly |
| Typical temperature | Hotter air | Lower air temperature |
| Skin evidence | Small barrier study | Little direct evidence for skin aging |
Infrared radiation is part of the "exposome," the environmental factors linked to skin aging, alongside sun radiation, pollution and tobacco smoke (Krutmann et al., J Dermatol Sci, 2017). That's a reason not to assume more heat or infrared exposure is better for skin.
Possible downsides
- Rosacea flares: heat is a common trigger.
- Melasma: heat may worsen pigmentation.
- Dehydration and dryness: long sessions can dry skin.
- Health risks: people with heart conditions, low blood pressure, or who are pregnant should ask a doctor first; avoid alcohol before or during sauna.
Safe sauna habits for skin
- Keep sessions moderate and stop if you feel unwell.
- Drink water.
- Remove makeup first.
- Rinse and apply moisturizer afterward (AAD: dry skin tips).
- Avoid saunas right after laser, peels or microneedling until your provider approves.
What actually slows skin aging
Daily sunscreen (Hughes et al., Ann Intern Med, 2013) and a retinoid (Weiss et al., JAMA, 1988) have far stronger evidence than sauna use.
Red light vs infrared sauna
Red and near-infrared LED devices are different from infrared saunas; they deliver specific wavelengths without heating the body. Evidence for LED is still developing.
Frequently asked questions
Does sauna detox skin? Sweating isn't a meaningful detox pathway; your liver and kidneys do that.
Does sauna help acne? Evidence is limited; sweat left on skin can irritate, so rinse afterward.
Is infrared sauna safe for skin? Usually for healthy people in moderation, but it isn't proven to reverse aging.
How often is OK? Many people use saunas a few times a week; check with your doctor if you have health conditions.
This article is for educational purposes only and is not medical advice. Talk to a board-certified dermatologist about your situation.
Sources
- Kowatzki D et al. Effect of regular sauna on epidermal barrier function and stratum corneum water-holding capacity. Dermatology. 2008. PubMed
- Krutmann J et al. The skin aging exposome. J Dermatol Sci. 2017. PubMed
- American Academy of Dermatology. Dry skin tips
- Hughes MC et al. Sunscreen and prevention of skin aging: a randomized trial. Ann Intern Med. 2013. PubMed
- Weiss JS et al. Topical tretinoin improves photoaged skin. JAMA. 1988. PubMed
