Halotherapy: what it does, what to expect & where to try it

Halotherapy, also called dry salt therapy, involves breathing pharmaceutical-grade dry salt aerosol in a controlled environment designed to mimic the microclimate of a natural salt cave. A halogenerator grinds salt into fine particles (1–5 microns) and disperses them into the air throughout a 45-minute session. These microscopic particles are small enough to travel into the bronchial passages, where salt's hygroscopic (moisture-absorbing) and antimicrobial properties are thought to support respiratory tract health. Studios range from minimalist salt-coated rooms to full 'salt cave' experiences with Himalayan salt tiles, dim lighting, and reclining chairs. Halotherapy has roots in Eastern European speleotherapy — therapy in natural salt mines — and is commonly used for respiratory wellness alongside standard medical care for asthma, allergies, and chronic sinusitis. It is also sought for skin wellness, as salt has mild antibacterial and exfoliating properties at the skin's surface.

How halotherapy works

Dry salt aerosol particles, when inhaled, are thought to thin mucus secretions, reduce airway inflammation, and create an inhospitable environment for certain bacteria through their hygroscopic and osmotic effects. European clinical research supports halotherapy as an adjunct for asthma, COPD, and allergic rhinitis, though large-scale randomized controlled trials in Western medicine are limited. The skin benefits are primarily based on the established antimicrobial and exfoliating properties of sodium chloride at the surface level.