Does a sauna clear skin or acne?

There is no good evidence that a sauna clears acne. Sweating does not unclog pores in any clinically proven way, and sweat left on the skin can irritate it. The 2008 Dermatology study did find lower forehead sebum in regular sauna users, but that is not the same as treating acne. Shower after each session.

Is a sauna bad for skin with eczema or rosacea?

A sauna can be bad for skin with eczema or rosacea because heat and sweat are common triggers. The American Academy of Dermatology lists sweat and overheating as eczema triggers, and in a National Rosacea Society survey of 431 patients, 54% said hot baths caused flare-ups. Try short, cooler sessions and stop if symptoms worsen.

What does the sauna do for your skin right after a session?

Right after a session, skin looks flushed because heat widens blood vessels near the surface and sends more blood to the skin. That is the glow seen in sauna skin before and after photos. The redness fades within minutes to an hour as you cool down. It is a temporary circulation effect, not a lasting change.

Is an infrared sauna better for skin than a traditional sauna?

There is no strong evidence that an infrared sauna is better for skin than a traditional one. Infrared cabins run cooler, about 110-135 °F (43-57 °C), which some people with heat-sensitive skin find easier. Very long, repeated close exposure to infrared heat can cause a mottled rash called erythema ab igne, so follow time limits.

Is a Sauna Good for Your Skin? Benefits and Risks

Q: Is a sauna good for your skin?

For most people with healthy skin, a sauna in moderation is neutral to mildly beneficial. A 2008 controlled study of 41 volunteers in Dermatology found regular sauna users had a more stable skin barrier and better hydration. It is not a treatment for skin disease, and heat can worsen eczema, rosacea and some other conditions.

Q: Do saunas dry out your skin?

Saunas do not appear to dry out healthy skin. A 2001 review in the American Journal of Medicine concluded that sauna bathing does not dry the skin, and the 2008 Dermatology study found stratum corneum hydration increased in regular users. Long, very hot sessions and harsh soaps afterward can still leave skin feeling tight, so moisturize after showering.

Short answer. Is sauna good for skin? For most people with healthy skin, moderate sauna use is safe and may slightly support the skin barrier: a 2008 controlled study found regular sauna users had better skin hydration and faster barrier recovery. A sauna will not cure acne or slow aging, and heat and sweat can trigger eczema, rosacea and some other conditions.

Below is what the research actually shows about sauna and skin health, what causes the post-sauna glow, and how to build a simple sauna and skin care routine.

This article is general information, not medical advice. People with skin conditions, and anyone who is pregnant or has heart disease, low or high blood pressure or other health conditions, should talk to a doctor before using a sauna.

What does a sauna do to your skin?

A sauna raises skin temperature first, then core temperature. To shed heat, the body widens blood vessels near the surface (vasodilation) and starts sweating. Cleveland Clinic puts traditional saunas at 150-195 °F (66-91 °C) with humidity usually under 20%, so the skin heats within minutes.

Those changes explain most of the visible sauna effects on skin:

Flushing. More blood flows to the skin, so the face and chest turn pink. This is the "glow" in sauna skin before and after photos.
Sweating. Sweat is mostly water with sodium, chloride and small amounts of other substances. It cools the skin as it evaporates.
Softer outer layer. Warmth and moisture temporarily soften the stratum corneum, the outermost layer of dead skin cells.
Temporary puffiness or redness. Both settle as you cool down.

None of these changes is permanent on its own. Whether repeated sessions change skin over weeks is the more interesting question.

Is sauna good for skin? What the research shows

There is only a handful of dermatology studies on sauna use, and most are small. Here is what they found.

Barrier function and hydration

The most direct study is a 2008 controlled trial by Kowatzki and colleagues in the journal Dermatology. Researchers compared 41 healthy volunteers aged 20-49, split into regular sauna users and non-users, after two 15-minute sessions in an 80 °C (176 °F) Finnish sauna. Regular users showed a more stable epidermal barrier, faster recovery of transepidermal water loss (TEWL, the water that evaporates through skin) and faster recovery of skin surface pH. Stratum corneum hydration increased, and forehead sebum decreased.

The authors called the study exploratory and said the data "suggest" a protective effect. It did not measure wrinkles, acne or appearance.

Dryness

A 2001 review in the American Journal of Medicine by Hannuksela and Ellahham stated plainly that sauna bathing does not dry out the skin. The same review noted sauna use may benefit people with psoriasis, while sweating may worsen itching in atopic dermatitis.

Psoriasis and other conditions

A 2018 systematic review by Hussain and Cohen pooled clinical studies of regular dry sauna bathing and found some small, low-quality trials reporting improvement in psoriasis, alongside stronger evidence for cardiovascular and pain outcomes. A 2018 Mayo Clinic Proceedings review by Laukkanen and colleagues reached a similar conclusion: sauna bathing is linked with several health benefits, but skin outcomes are far less studied than heart outcomes.

Claim	What the evidence shows	Strength
Sauna improves skin hydration	2008 study of 41 people: hydration rose in regular users	Small, exploratory
Sauna dries out skin	2001 review: does not dry the skin	Expert review
Sauna strengthens the skin barrier	Faster TEWL and pH recovery in regular users	Small, exploratory
Sauna helps psoriasis	A few small trials report improvement	Weak
Sauna clears acne	No clinical trials	None
Sauna "detoxes" the skin	No evidence that sweat removes meaningful toxins	None
Sauna slows skin aging	No clinical trials	None

For more on the sweat question, see do saunas detox your body.

Do saunas dry out your skin?

For most people, no. Both the 2001 review and the 2008 hydration data point the other way. Traditional Finnish saunas run at low relative humidity, often 10-20%, but the skin is constantly wet with sweat during the session, which limits drying while you are inside.

Dryness usually comes from what happens after:

Long, very hot showers
Harsh or fragranced soaps
Skipping moisturizer on already dry skin
Very frequent or very long sessions

Is a sauna good for dry skin?

A sauna can be fine for dry skin if you keep sessions moderate and moisturize within a few minutes of your post-sauna shower, while the skin is still slightly damp. If you have eczema rather than simple dry skin, read the next section first.

Is a sauna bad for skin? Who should be careful

A sauna can be bad for skin in a few specific situations.

Eczema (atopic dermatitis). The American Academy of Dermatology lists sweat and overheating among common eczema triggers. Some people with eczema tolerate short sessions; others flare within hours.

Rosacea. In a National Rosacea Society survey of 431 patients, 54% said hot baths triggered flare-ups and 56% said excessive indoor heat did. Saunas and steam baths were also named.

Heat rash, broken capillaries and melasma. Heat can aggravate these. People with melasma often find heat darkens patches.

Recent procedures. After peels, laser treatment, waxing, microneedling or a new tattoo, follow your provider's advice on avoiding heat.

Infrared and chronic heat exposure. Erythema ab igne is a net-like, mottled rash caused by long-term, repeated exposure to heat from sources such as heaters and heating pads. DermNet describes it as a reaction to chronic infrared heat that is not hot enough to burn. Normal sauna sessions are short and the skin is not pressed close to an emitter, but this is a reason to avoid sitting against hot panels for long periods.

If your skin flares, cut session length, lower the temperature, or skip the sauna and ask a dermatologist.

How to protect your skin in a sauna

Use this simple sauna and skin care routine:

Cleanse first. Remove makeup, sunscreen and heavy products so they do not sit on hot, sweating skin.
Hydrate. Drink a glass of water before and after.
Keep it moderate. Aim for 10-20 minutes per round; see how long to sit in a sauna.
Sit on a towel. It protects skin from hot wood and keeps the bench hygienic.
Skip harsh actives beforehand. Avoid using retinoids, acids or peels right before a session, as heat can increase irritation.
Rinse off sweat. A lukewarm shower afterward removes salt and residue. Avoid a long, very hot shower.
Moisturize. Apply a fragrance-free moisturizer while skin is still damp.
Watch the response. Note any redness that lasts more than an hour or itching that night.

Skin type	Suggested approach	Session guide
Normal or oily	Standard routine, shower after	15-20 min
Dry	Moisturize right after; avoid hot showers	10-15 min
Acne-prone	Clean face before and after; do not pick	10-15 min
Eczema	Test short, cooler sessions; stop if itching starts	5-10 min, or avoid
Rosacea	Cooler room, lower bench, cool water on face	5-10 min, or avoid
Post-procedure	Follow provider advice	Avoid until cleared

Infrared sauna vs traditional sauna for skin

Infrared cabins heat the body directly with far infrared (FIR) emitters, wavelengths of roughly 3-1000 µm, and typically run at 110-135 °F (43-57 °C). Traditional saunas heat the air to 150-195 °F (66-91 °C). Both make you sweat. Neither has been shown in good trials to be better for skin.

Some people with heat-sensitive skin prefer infrared because the air is cooler. Full spectrum and red light therapy saunas add near-infrared or red LED panels; red light therapy has its own body of research, but those results come from specific devices and doses and should not be assumed for every sauna. Our explainer on red light therapy vs infrared sauna covers the difference, and infrared sauna benefits covers what the wider research shows.

Choosing a sauna with skin comfort in mind

Comfort features matter more than marketing claims. Look for:

Adjustable temperature. Mars Sauna's infrared models list an operating range of 18-65 °C (64-149 °F), so you can run a gentler session.
Smooth, knot-free wood. Canadian hemlock and western red cedar benches are less likely to cause hot spots than resinous knots.
Backrests and guards that keep skin off hot surfaces and heaters.
Low-EMF heaters if that is a priority for you; browse low-EMF far infrared saunas.

Retailers and spa operators sourcing cabins for clients can request a quote for infrared, full spectrum or traditional models.

Key takeaways

For most healthy skin, a moderate sauna habit is safe; a 2008 study of 41 people found better hydration and barrier recovery in regular users.
Saunas do not appear to dry out skin; post-sauna hot showers and harsh soaps are more likely culprits.
There is no clinical evidence that a sauna clears acne, detoxes skin or slows aging.
Heat and sweat are known triggers for eczema and rosacea; 54% of surveyed rosacea patients reported flares from hot baths.
Cleanse before, rinse after, moisturize while damp, and keep sessions to about 10-20 minutes.