Infrared saunas have become a staple in gyms, wellness centres, longevity clinics and private homes, yet one question keeps coming up: do they actually get hot enough to work? The short answer is yes, but the temperature number alone doesn’t tell the whole story.

Infrared saunas heat the body directly, not the air around it. That’s why lower temperatures still deliver real warmth to your tissues.
Ember & Ice Wellness

The short answer

While traditional saunas heat the surrounding air to 70 to 100°C, infrared saunas use infrared light that penetrates the skin and warms your body’s tissues directly. So even at air temperatures of just 40 to 65°C, your body still experiences deep therapeutic warmth. Because the air is cooler, many people find infrared saunas far more comfortable, which allows for longer sessions and a more consistent practice.

Infrared vs traditional sauna

Both types offer real benefits, but they work in different ways.

• Traditional sauna: 70 to 100°C, heats the air first, intense rapid sweating, shorter sessions, rooted in Finnish tradition.
• Infrared sauna: 40 to 65°C, heats the body directly, gentle deep-tissue warmth, longer sessions tolerated, uses infrared light waves.

Understanding the difference helps you choose the right therapy for your goals.

How infrared heat works in the body

When infrared light reaches your skin, it penetrates into the tissues beneath and raises your core temperature directly, triggering a range of biological responses. Key among them is the activation of heat shock proteins, which help repair cells and protect the body from stress at a cellular level, one reason infrared sauna use is increasingly studied in relation to longevity and metabolic health. There are three main wavelengths:

• Near infrared: penetrates the skin’s surface layer; associated with supporting cellular repair and skin health.
• Mid infrared: reaches deeper soft tissue; associated with supporting circulation and muscle relaxation.
• Far infrared: penetrates deepest; raises core temperature and supports the body’s natural sweating response.

Benefits of regular infrared sauna use

Research and clinical observation point to a range of benefits from consistent use, and they are cumulative, building over weeks and months.

• Improved circulation: heat dilates blood vessels, supporting blood flow and oxygen delivery.
• Muscle recovery: deep warmth relaxes muscle fibres and is associated with reduced post-exercise soreness.
• Stress reduction: the warmth calms the nervous system and is associated with lower cortisol and greater relaxation.
• Better sleep: regular use has been linked to deeper, more restorative sleep.
• Natural cleansing: increased sweating supports the body’s own processes.
• Cardiovascular conditioning: the gentle rise in heart rate provides a light cardiovascular stimulus over time.

Common questions

Do infrared saunas get hot enough to work? Yes. They typically run between 40 and 65°C, but because the heat penetrates the body directly, you still get the benefits at lower air temperatures. The key is tissue-level heating, not air temperature.

Do infrared saunas make you sweat? Yes. Even at lower air temperatures, direct heating of the body raises your core temperature and triggers sweating. Some people sweat earlier in infrared sessions because the body warms more efficiently.

Are infrared saunas safe? Used correctly, they are considered safe for most healthy people. Stay well hydrated, keep sessions within the recommended window, and check with a doctor if you have any underlying health conditions.

How long should a session be? Most last 20 to 40 minutes. Beginners should start with 15 to 20 minutes and build up as comfort improves.

How often should you use one? Many experts suggest 3 to 5 times a week for the most consistent, cumulative benefits.

Is infrared better than traditional? Neither is objectively better; they offer different experiences. Infrared is gentler and suits longer, daily sessions; traditional gives intense heat rooted in Finnish culture. Many modern facilities offer hybrid options.

Explore the Ember & Ice infrared and indoor sauna collection to bring the technology into your home.

Content is for general information and wellbeing. Consult a healthcare professional before beginning any new wellness practice.