Unlike traditional high-heat saunas that heat the air around you to intense, humid temperatures, infrared saunas use radiant light energy to directly warm your body at a cellular level. Operating at a lower, much more comfortable ambient temperature (typically 100°F to 140°F), infrared heat penetrates deep into soft tissue to induce a restorative, cardiovascular-stimulating sweat without the stifling air density.
When built with natural Hemlock wood and combined with chromotherapy (visible coloured light frequency therapy), this multi-modality treatment offers powerful support for your cardiovascular system, joint health, skin barrier, and nervous system regulation. Here is what modern clinical research says about how infrared heat, natural wood aromatics, and light frequencies support your body.
1. Deep Cardiovascular Support and Vascular Health
Infrared heat causes blood vessels to dilate, increasing blood flow and oxygen delivery throughout the body in a way that mimics gentle cardiovascular exercise, without mechanical joint impact.
- Lowering Blood Pressure and Arterial Stiffness: A major clinical review on thermal sauna therapy published in Journal of Cardiology demonstrated that regular infrared sauna sessions significantly improve endothelial function (the inner lining of blood vessels). Participants showed measurable reductions in systolic blood pressure and arterial stiffness.
- Passive Cardiac Workout: As your core body temperature rises, your body works to cool itself, increasing heart rate and cardiac output. Research shows that a 30-minute infrared session can elevate heart rate into a light-to-moderate aerobic zone, supporting metabolic and heart health.
Read the Research:
Check out the clinical review on infrared sauna therapy and cardiovascular health on PubMed
2. Chronic Joint Stiffness, Arthritis and Fibromyalgia
Because infrared light waves penetrate deep beneath the skin, the heat reaches joint capsules, tendons, and muscular attachments where chronic inflammation lodges.
- Easing Stiffness and Pain in Osteoarthritis: A clinical study published in Clinical Rheumatology evaluated patients with Rheumatoid Arthritis and Ankylosing Spondylitis over a four-week period of infrared sauna therapy. Patients reported significant drops in pain, morning stiffness, and fatigue during and immediately after sessions, with zero adverse disease flare-ups.
- Soothing Central Sensitization: Research on chronic pain and fibromyalgia shows that radiant heat stimulates peripheral thermal receptors, suppressing pain signaling pathways in the spinal cord and relaxing protective muscle guarding.
Read the Research:
Read the study on infrared sauna for arthritis and joint stiffness on PubMed
3. Cellular Repair and Heat-Shock Proteins (HSPs)
One of the most fascinating biological responses to thermal therapy is the activation of special cellular repair molecules known as heat-shock proteins.
- Preventing Muscle Atrophy and Speeding Repair: Exposure to mild thermal stress triggers the expression of Heat Shock Protein 70. Studies in Journal of Applied Physiology show that HSPs help fold new proteins correctly, repair damaged cellular structures, and protect muscle tissue from oxidative stress and breakdown following heavy labor or physical injury.
- Mitochondrial Efficiency: Mild heat stress encourages mitochondrial biogenesis (the process by which your cells create new energy generators), helping improve baseline physical endurance and recovery from deep fatigue.
Read the Research:
Read the study on heat-shock proteins and cellular adaptation on PubMed Central
4. The Organic Benefits of Canadian Hemlock Wood
The physical structure of your sauna matters just as much as the heater. Our sauna is crafted from natural Canadian Hemlock, which brings distinct hypoallergenic and therapeutic advantages to your session:
- Hypoallergenic and Non-Toxic: Hemlock is an ideal wood for sensitive skin and chemical sensitivities because it is entirely non-toxic and naturally low in aromatic resins and oils. Unlike woods that outgas strong scents or irritate sensitive airways, Hemlock remains clean and neutral when heated.
- Non-Porous and Antimicrobial Properties: Hemlock has exceptional resistance to moisture and shrinkage. Its tight wood grain naturally repels bacteria and fungi, maintaining an ultra-hygienic environment during every sweat session.
- Even Heat Distribution: Hemlock is a superior natural insulator. It absorbs radiant infrared waves and distributes warmth evenly across the cabin, preventing hot spots and creating a soft, cocoon-like atmosphere.
5. Chronic Stress and Vagus Nerve Regulation
For individuals living in a constant state of hyper-vigilance, thermal therapy provides a physical cue that signals safety to the autonomic nervous system.
- Shifting out of Fight-or-Flight: Infrared heat promotes systemic muscle relaxation and vasodilation, which lowers sympathetic nervous system tone. A clinical trial published in Complementary Therapies in Medicine noted significant improvements in Heart Rate Variability (HRV) and a decrease in salivary cortisol levels following thermal sessions, signaling a transition into parasympathetic (“rest-and-digest”) mode.
- Improved Sleep Quality: As core body temperature gently cools down after leaving the sauna, the body mimics its natural circadian temperature drop before sleep, signaling melatonin release and encouraging deeper slow-wave sleep cycles.
Read the Research:
Read the clinical trial on sauna exposure, cortisol, and stress markers on PubMed
6. The Science of Chromotherapy (Light Frequency Therapy)
Chromotherapy utilizes specific wavelengths of visible light to trigger localized biological responses in the skin and nervous system.
- Blue Light (415 to 460 nm) for Skin Health: Blue light wavelengths target Cutibacterium acnes (the bacteria responsible for acne breakouts) while regulating sebum production. Clinical trials in Dermatology Research and Practice confirm its antibacterial and anti-inflammatory benefits for clear skin.
- Red Light (630 to 700 nm) for Collagen and Healing: Red wavelengths stimulate fibroblast activity in the dermis, encouraging collagen and elastin production to support skin elasticity, wound healing, and barrier repair.
- Green and Yellow Light for Mood and Neural Regulation: Visual exposure to specific light spectrums influences the retino-hypothalamic tract, regulating neurotransmitters like serotonin and dopamine to improve seasonal mood dips and lower visual anxiety.
Read the Research:
Read the review on chromotherapy and photobiomodulation in medicine on PubMed Central
Safety and Who Should Exercise Caution (Contraindications)
While infrared sauna therapy is gentle and non-invasive, thermal heat alters blood circulation and fluid balance. Please note the following precautions:
- Pregnancy: Standard medical guidelines advise avoiding high thermal heat exposure during pregnancy.
- Severe Cardiovascular Conditions and Low Blood Pressure: Individuals with unstable angina, recent heart attacks, or severe orthostatic hypotension should consult their physician first.
- Alcohol Use: Do not use the sauna while under the influence of alcohol, as it drastically increases dehydration and fainting risks.
- Stay Hydrated: Because radiant heat induces deep sweating, drink plenty of water and electrolytes before and after your session.