Infrared saunas are often marketed as a shortcut to glowing, clearer, younger-looking skin. But what does dermatology research actually show? Here is the evidence without the hype.
Quick answer
Possibly but the evidence is more nuanced than the marketing. Heat exposure can temporarily increase skin blood flow and sweating, and research on regular sauna bathing has found measurable changes in skin barrier function and hydration. However, there is not strong clinical evidence that sitting in a consumer infrared sauna dramatically reduces wrinkles, clears acne, removes toxins, or “detoxes” the skin.
The key distinction
Infrared sauna: primarily creates a whole-body heat exposure using infrared heaters.
Medical/light therapy: uses specific wavelengths, doses, treatment times, and devices designed for a particular skin outcome.
Research showing that a particular infrared or near-infrared light treatment affects collagen does not automatically prove that a consumer infrared sauna produces the same result.
Infrared Sauna and Skin: At a Glance
| Skin claim | What the evidence suggests | Confidence |
|---|---|---|
| More blood flow to skin | Heat causes blood vessels near the skin to widen and increases cutaneous blood flow. | Strong physiological basis |
| Temporary glow | Increased circulation and sweating can make skin look flushed or more radiant immediately after a session. | Reasonable, but temporary |
| Skin hydration | A controlled study of regular Finnish sauna users found improved stratum-corneum water-holding capacity and barrier-related measures. | Promising for sauna generally |
| Collagen production | Some infrared/light studies report changes in collagen-related biology, but these treatments are not equivalent to a whole-body infrared sauna. | Limited for infrared saunas |
| Wrinkle reduction | Small studies of specific infrared treatments have reported cosmetic improvements, but this cannot be generalized to all infrared saunas. | Limited |
| Acne treatment | Infrared light has been investigated in dermatology, but that is different from sauna heat. Evidence does not establish infrared sauna as an acne treatment. | Insufficient |
| Pore “detox” | Heat and sweat may temporarily change the skin surface, but there is no good evidence that an infrared sauna removes toxins from pores. | Not established |
| Rosacea | Heat is a common rosacea trigger and can worsen flushing in susceptible people. | Important caution |
Why Does Your Skin Turn Red in a Sauna?
One of the most obvious things you notice during a sauna session is that your skin becomes warmer and often redder. This is a normal response to heat.
As body temperature rises, blood vessels in the skin dilate. More blood is directed toward the skin so the body can release heat into the surrounding environment. At the same time, sweat glands become active to help cool you.
That increased circulation can create the temporary “sauna glow” people notice after a session. It is real—but a temporary flushed appearance should not be confused with permanent anti-aging treatment.
More circulation is not the same thing as more collagen.
Heat clearly changes blood flow and sweating. Collagen remodeling is a much more specific biological process. A sauna can make your skin look temporarily warm and flushed without necessarily producing the kind of controlled collagen remodeling associated with certain dermatologic procedures or light-based treatments.
Can Infrared Saunas Improve Skin Hydration?
This is one of the more interesting areas of sauna research—but there is an important limitation: the best-known controlled study examined regular Finnish sauna bathing, not consumer infrared saunas.
Researchers studied 41 healthy volunteers and compared people who regularly used a sauna with a control group. They measured skin parameters including stratum-corneum water-holding capacity, transepidermal water loss, skin redness, surface pH and blood perfusion.
The regular sauna group showed a more stable epidermal barrier, greater water-holding capacity in the outer skin layer, and faster recovery of some skin measurements after standardized sauna exposure.
Healthy volunteers
The controlled study examined 41 adults aged 20–49.
Standardized heat
The study used two 15-minute sauna periods at approximately 80°C (176°F).
Published research
The findings were published in the peer-reviewed journal Dermatology.
This supports sauna research—not a blanket claim about every infrared sauna.
The study is useful because it measured skin physiology rather than simply asking participants whether their skin “looked better.” But it used Finnish sauna exposure. More direct research is needed to determine whether consumer infrared saunas produce the same skin-barrier effects.
Does Infrared Sauna Increase Collagen?
This is where infrared sauna marketing can easily get ahead of the science.
There are scientific studies showing that certain forms of infrared or near-infrared exposure can influence fibroblasts, collagen-related pathways and skin remodeling. A small human study published in 2006, for example, investigated far-infrared treatment in 20 people with mild-to-moderate facial wrinkles and reported improvements in skin texture and roughness after six months.
But that study used a specific far-infrared treatment protocol. It was not a randomized trial showing that ordinary infrared sauna sessions reliably erase wrinkles.
The research is promising in some areas, but infrared exposure is dose-dependent. More exposure is not automatically better for the skin.
A 2023 review by researchers in dermatology and photomedicine examined the published evidence on infrared radiation and human skin. The review described encouraging findings for some controlled therapeutic applications, including skin rejuvenation and wound healing, while also noting that excessive thermal exposure can contribute to adverse effects such as burns and photoaging.
Infrared sauna ≠ red-light therapy
Red-light and near-infrared photobiomodulation devices are designed to deliver specific wavelengths and doses of light. An infrared sauna is primarily a heat-delivery environment. Both may involve infrared wavelengths, but they are not interchangeable treatments.
This distinction is especially important when reading studies about collagen, wrinkles, inflammation or wound healing. A study using a controlled medical light device should not automatically be used as evidence for a sauna.
What Does Dr. Jennifer Lucas Say About Light Therapy?
Cleveland Clinic's dermatologist explains that red-light therapy uses red or near-infrared light and that research suggests possible benefits for wrinkles and redness, while emphasizing that results are not overnight or dramatic.
Why this matters: this is an example of why wavelength, dose and treatment design matter. Evidence for a specific dermatologic light therapy should be kept separate from evidence for general sauna heat.
Can Infrared Saunas Make Your Skin Look Younger?
Maybe indirectly, but the anti-aging claim is not proven strongly enough to make a blanket promise.
Healthy-looking skin depends on many factors: genetics, age, sun exposure, smoking, sleep, nutrition, hydration, skincare, hormones and environmental stressors. Sauna use may influence circulation and certain aspects of skin physiology, but that does not make it an established anti-aging treatment.
There is also a fascinating complication in the infrared literature. Some studies have reported potentially beneficial effects from carefully controlled infrared exposure, while other research has found that repeated or excessive infrared-A exposure can promote oxidative stress and changes associated with premature skin aging.
Dose matters.
Infrared radiation is not automatically “good” or “bad” for skin. The wavelength, intensity, duration, temperature and cumulative exposure all matter. A therapeutic dose in a controlled dermatology study is not the same thing as repeated uncontrolled heat exposure.
What About Acne?
It is tempting to assume that sweating in a sauna cleans pores and therefore treats acne. The evidence does not support making that leap.
Heat can increase sweating and temporarily alter the skin surface. However, acne is a complex inflammatory condition involving follicular plugging, sebum production, inflammation and microbial factors. A sauna should not be considered a substitute for evidence-based acne treatment.
Infrared light has been studied in dermatology, including as part of specific acne-treatment protocols. But those studies use controlled light devices and treatment procedures. They do not establish that an infrared sauna is an effective acne therapy.
“Sweating cleans your pores” is too simplistic.
Sweat is not a magical cleanser, and pores do not simply “open” and release toxins. If you sauna, rinse or gently cleanse afterward and use skincare appropriate for your skin type rather than relying on sweat as an acne treatment.
Does an Infrared Sauna Detox Your Skin?
This is one of the biggest claims to treat cautiously.
Sauna sessions produce sweat, and sweat contains water, electrolytes and small amounts of various substances. But that does not mean sweating is a clinically proven method of “detoxing” the body or clearing toxins from your skin.
Cleveland Clinic's Dr. Melissa Young has discussed detoxification claims around infrared sauna use and cautioned that the research in this area is still in its early stages.
Dr. Young describes infrared sauna as a lower-temperature form of heat exposure, while cautioning that claims about sweating out toxins remain an area where more research is needed.
The practical takeaway is simple: enjoy sauna for relaxation and heat exposure, but do not treat it as a replacement for your body's normal organs and processes involved in eliminating waste.
Can Infrared Sauna Make Dry Skin Worse?
It can, particularly if you stay too long, become dehydrated or already have a compromised skin barrier.
Heat and sweating are not automatically moisturizing. Your skin can feel soft immediately after sweating, while repeated heat exposure combined with dehydration may leave some people feeling dry or irritated afterward.
How your skin responds can depend on the individual, the duration and temperature of the session, your hydration status, the environment and what you do afterward.
To support your skin
✓ Keep sessions moderate
✓ Drink enough fluids
✓ Gently rinse after heavy sweating
✓ Moisturize if your skin feels dry
✓ Continue normal sun protection
Avoid overdoing it
✕ Very long sessions
✕ Sauna when dehydrated
✕ Aggressive exfoliation immediately afterward
✕ Treating sauna as an acne cure
✕ Assuming more heat means more skin benefit
What About Rosacea and Sensitive Skin?
This is an especially important exception.
The American Academy of Dermatology identifies heat and overheating as common rosacea triggers. For people whose rosacea is triggered by heat, an infrared sauna may increase facial flushing, redness or discomfort rather than improve the condition.
That does not mean every person with sensitive skin must avoid heat. It means your individual response matters, and people with rosacea should be particularly cautious about overheating.
If heat triggers your rosacea, sauna may work against your skin goals.
If sauna sessions repeatedly cause prolonged flushing, burning or irritation, stop and discuss the issue with a dermatologist. A skincare routine should be based on your skin condition—not on a generic wellness claim.
Does Sauna Use Help With Skin Circulation?
Yes, heat has a clear physiological effect on circulation near the skin.
During heat exposure, blood vessels dilate and skin blood flow increases as the body attempts to release heat. This is one reason sauna users can look flushed during and immediately after a session.
Better circulation is biologically meaningful, but it should not be translated into unsupported claims such as “sauna feeds your skin with nutrients and makes you look younger.” The body is more complicated than that.
Sauna changes skin physiology in the short term.
Increased skin blood flow and sweating are well-established responses to heat. Research also suggests that regular sauna exposure can produce measurable adaptations. What remains less certain is how large those changes are for long-term cosmetic outcomes such as wrinkles, pigmentation or acne.
How to Use an Infrared Sauna for a Skin-Friendly Routine
1. Start with a comfortable temperature
You do not need to chase the highest temperature. Infrared saunas commonly operate at lower temperatures than traditional saunas. Start conservatively, particularly if you are new to sauna use.
2. Keep the first sessions short
Give your body and skin time to adapt. Cleveland Clinic's Dr. Young recommends starting low and slow for infrared sauna use and stopping if you feel dizzy, nauseated or unwell.
3. Hydrate
Heavy sweating means fluid loss. Drink water before and after your session and pay attention to how your body feels.
4. Do not scrub aggressively afterward
Your skin has already experienced heat and sweating. A gentle shower or rinse is generally more sensible than immediately using harsh scrubs or strong exfoliating products.
5. Moisturize according to your skin type
If your skin feels dry or tight after sauna use, apply a moisturizer that works for your skin. Sauna does not replace a consistent skincare routine.
6. Protect against UV exposure
If your goal is healthier-looking skin, daily sun protection has far stronger support than sauna “detox” or anti-aging claims. Sauna should be considered a wellness practice, not a replacement for proven skin-protection habits.
Infrared Sauna vs. Red-Light Therapy for Skin
| Feature | Infrared Sauna | Red/Near-Infrared Light Therapy |
|---|---|---|
| Primary purpose | Whole-body heat exposure and wellness | Targeted light-based treatment |
| Main effect | Raises body and skin temperature | Delivers selected wavelengths of light |
| Skin research | Growing but limited for cosmetic outcomes | More specific research for some dermatologic applications |
| Collagen claims | Not established for ordinary sauna use | Some studies report collagen-related effects |
| Acne | Not established as a treatment | Some specific light-based treatments have evidence |
| Heat sensitivity | Relevant consideration | Device-dependent; not primarily a whole-body heat experience |
The Bottom Line
Are infrared saunas good for your skin? They may be, particularly as part of a broader wellness routine. Heat can increase skin blood flow and sweating, and sauna research has found measurable changes in skin physiology. But the evidence does not justify promising dramatic anti-aging, acne-clearing, pore-detoxifying or wrinkle-erasing results from ordinary infrared sauna use.
The most responsible position is somewhere between “sauna is amazing for your skin” and “sauna does nothing.” There are legitimate biological effects and some promising research—but many cosmetic claims remain ahead of the evidence.
Who May Want to Be More Careful?
Sauna use is not appropriate for everyone. People who are pregnant, have certain medical conditions, are taking medications that affect heat tolerance or blood pressure, or have a condition that makes overheating risky should speak with a healthcare professional before using a sauna.
If you have rosacea or another heat-sensitive skin condition, pay particular attention to whether sauna exposure triggers redness, burning or flare-ups.
Frequently Asked Questions
Does infrared sauna give you better skin?
It may support some aspects of skin physiology, but there is not enough evidence to say that infrared sauna reliably produces dramatic cosmetic improvements. Increased circulation and sweating are established effects; long-term anti-aging effects remain less certain.
Does infrared sauna help with wrinkles?
Some specific infrared and near-infrared treatment studies have reported improvements in skin texture, elasticity or collagen-related measures. However, those results should not automatically be applied to consumer infrared sauna sessions.
Can infrared sauna clear acne?
There is not sufficient evidence to recommend infrared sauna as an acne treatment. Specific light-based dermatology treatments are a different category and should not be confused with sauna heat.
Does sauna open your pores?
Heat and sweating can temporarily change the skin surface, but the popular idea that pores simply “open” and release toxins is an oversimplification. Gentle cleansing after a session is more useful than relying on sauna as a pore detox.
Does sweating remove toxins through the skin?
Sweat contains small amounts of various substances, but there is not strong clinical evidence that sauna sweating is a general detoxification treatment. Normal liver and kidney function remains central to the body's waste-removal processes.
Can infrared sauna dry out your skin?
It can leave some people feeling dry or irritated, especially with long sessions or inadequate hydration. If your skin becomes tight or uncomfortable, reduce exposure and moisturize afterward.
Is infrared sauna safe for rosacea?
Not necessarily. Heat is a common rosacea trigger. If sauna exposure causes significant flushing or irritation, avoid overheating and discuss your symptoms with a dermatologist.
Is red-light therapy the same as an infrared sauna?
No. Red-light and near-infrared photobiomodulation devices use selected wavelengths and doses of light. Infrared saunas primarily use infrared heaters to create a whole-body heat environment.
How often should I use an infrared sauna for skin benefits?
There is no scientifically established frequency specifically for cosmetic skin benefits. Start conservatively, prioritize hydration and comfort, and follow the manufacturer's safety guidance. If you have a medical or skin condition, ask your healthcare professional for individualized advice.
