Halotherapy Explained
An Introduction to Salt Therapy
Halotherapy, often referred to as salt therapy, is one of the most misunderstood and under‑explained modalities in modern wellness. Frequently reduced to a decorative salt room or a vague respiratory claim, true halotherapy is neither aesthetic nor incidental. It is a physiologically active therapy with roots in respiratory medicine and growing relevance in nervous system regulation and preventative health.
As with sauna therapy, halotherapy delivers benefit not through intensity, but through consistent, targeted exposure that supports the body’s existing regulatory systems.
This article introduces halotherapy from a scientific and clinical perspective: what it is, how it works, and why it has become an important complementary modality in integrative wellness environments.
What Is Halotherapy?
Halotherapy involves the inhalation of micronised, pharmaceutical‑grade salt particles dispersed into the air using a medical halogenerator.
At Sôlt Haus, we have tried and tested a range of halogenerator machines and can confidently say we have invested in the best with Clearlight HALO ONE®️.
The Clearlight HALO ONE technology vaporizes 3% pharmaceutical-grade saline solution into micro-sized particles (1–10 microns) using high-frequency vibration. It then disperses the vapor into the air through pressurized release pattern that is designed for consistent and distribution throughout the space.
By suspending salt particles in the air, it distinguishes true halotherapy from passive salt rooms, salt lamps, or decorative salt walls, which do not deliver therapeutic salt aerosol in clinically meaningful concentrations.
True halotherapy requires a calibrated medical halogenerator, pharmaceutical‑grade sodium chloride, and controlled particle size and dispersion.
Salt rooms without both micronizing and aerosol technology may feel calming, but they do not deliver the same physiological respiratory effects.
The Origins of Halotherapy
Halotherapy has its roots in Eastern European respiratory medicine.
In the mid‑19th century, physicians observed that salt mine workers exhibited lower rates of respiratory illness. This led to the development of speleotherapy which is the use of subterranean salt cave environments to treat chronic lung conditions.
Modern halotherapy replicates these conditions in a controlled setting using halogenerators, allowing consistent dosage without the need for natural caves.
How Halotherapy Works in the Body
Halotherapy primarily acts through the respiratory system, with secondary effects on the nervous and immune systems.
1. Airway Clearance & Mucociliary Function
Micronised salt particles attract moisture, helping to thin mucus, improve mucociliary clearance, and support removal of airborne irritants, allergens, and pollutants
Clinical research published in International Journal of Chronic Obstructive Pulmonary Disease shows improved airway function and reduced inflammation following salt aerosol exposure (Chervinskaya & Zilber, 1995).
2. Anti‑Inflammatory & Antimicrobial Effects
Salt has natural antibacterial and anti‑inflammatory properties.
Inhaled salt aerosol can help reduce airway inflammation, create an unfavourable environment for certain pathogens, and support immune defense in the respiratory tract
These effects are particularly relevant for individuals with chronic inflammation, allergies, or frequent respiratory infections.
3. Nervous System Regulation Through Breath
Breathing is one of the fastest ways to influence the autonomic nervous system.
By improving airway patency and breathing efficiency, halotherapy can encourage slower, deeper breaths, reduce respiratory effort, and increase vagal tone which supports parasympathetic nervous system activation.
The overall effect is a feeling of lightness, calm, and clarity.
When combined with the dry heat of infrared sauna, the experience further amplifies relaxation, stress reduction, and sleep readiness.
4. Skin Health: Salt’s Antibacterial Properties
Although halotherapy is best known for its effects on the respiratory system, the skin, our largest immune organ, is also influenced by exposure to salt.
Salt has long been recognised for its natural antibacterial and antimicrobial properties. In a controlled, dry halotherapy setting, micronised sodium chloride particles create a low-humidity, mineral-rich microclimate that is unfavourable for the growth of many pathogenic microorganisms on the skin’s surface. Sodium chloride has been shown to exert an osmotic effect, drawing water out of microbial cells and inhibiting their activity.
Research exploring saline and salt-based environments has demonstrated antimicrobial activity against a broad range of organisms, including those commonly involved in skin infections (Pullar et al., 2017; Kampf & Kramer, 2004).
Barrier Function & Inflammatory Skin Conditions
Many chronic skin concerns including eczema, psoriasis, dermatitis, and acne are characterised by:
· Impaired barrier function
· Microbial imbalance
· Increased trans epidermal water loss
· Cutaneous inflammation
Salt environments have been studied for their ability to:
· Reduce skin inflammation
· Support barrier recovery
· Decrease itching and irritation
Clinical observations from speleotherapy and halotherapy settings have reported improvements in symptom severity in patients with inflammatory skin conditions, likely due to the combined antimicrobial, anti-inflammatory, and desiccating effects of salt aerosol (Chervinskaya & Zilber, 1995; Horváth, 2013).
Applications of Halotherapy
Halotherapy has been studied as a complementary therapy for a range of health conditions such as asthma and allergic airway conditions, chronic bronchitis and COPD, upper respiratory tract congestion, and stress‑related breathing dysfunction.
Salt is a well-documented complementary treatment for a range of skin conditions, such as eczema, psoriasis, dermatitis, and acne, when applied topically.
Modern life also places constant demand on the respiratory system through pollution, allergens, stress, and shallow breathing patterns, and we know that our internal state of being can affect skin health, function and appearance.
Halotherapy is increasingly recognised as a gentle, non‑invasive way to support health and wellbeing as a complementary practice to support respiratory health, nervous system regulation, and skin conditions.
Halotherapy when Combined with Infrared Sauna Therapy
Within an infrared heated environment, the therapeutic potential of halotherapy is further enhanced.
The dry heat of infrared instigates evaporation, which helps the salt particles, carried by water within the aerosol, to remain suspended in the air for longer than in cooler or ambient-temperature spaces.
When halotherapy is combined with infrared sauna therapy, it amplifies the complementary benefits of each, into a truly unique experience:
· Infrared heat boosts circulation and promotes full-body relaxation
· Micro-fine salt aerosol supports clearer, more efficient breathing
· Together, they encourage parasympathetic activation (the body’s natural rest-and-restore state)
Most people report finding the dry warmth of infrared easier and more comfortable to breathe in than the dense humidity of traditional saunas. By accessing and maintaining deeper breathwork, it creates a more relaxing and therapeutic experience.
It is for these reasons that we chose to combine infrared sauna therapy with halotherapy at Sôlt Haus. The unique pairing nurtures respiratory and skin health, while also supporting recovery, stress regulation, emotional wellbeing, and improved sleep quality — key pillars explored throughout the Sôlt Haus article library.
Safety & Considerations
Halotherapy is generally well tolerated.
Some individuals may experience mild throat irritation and temporary coughing as airways clear. These responses are typically short‑lived.
Those with severe respiratory conditions should seek medical guidance before halotherapy use.
References
· Chervinskaya, A. V., & Zilber, N. A. (1995). Halotherapy for treatment of respiratory diseases. International Journal of Chronic Obstructive Pulmonary Disease.
· Bar-Yoseph, R., et al. (2017). Dry salt aerosol therapy in respiratory care. Journal of Aerosol Medicine and Pulmonary Drug Delivery.
· Pullar, J. M., Carr, A. C., & Vissers, M. C. M. (2017). The roles of vitamin C in skin health. Nutrients. (Discusses barrier function and antimicrobial environment of the skin).
· Kampf, G., & Kramer, A. (2004). Epidemiologic background of hand hygiene and evaluation of the most important agents for scrubs and rubs. Clinical Microbiology Reviews.
· Chervinskaya, A. V., & Zilber, N. A. (1995). Halotherapy for treatment of respiratory diseases. (Includes dermatological observations in speleotherapy environments).
· Horváth, G. (2013). Halotherapy in chronic inflammatory conditions. European Respiratory Review.