Key takeaways
- Marketing often claims lamps remove allergens and pollutants.
- Heated salt may release trace negative ions, but measured output from lamps is far below commercial ionizers or natural sources like waterfalls.
- Warm amber light is pleasant and less melatonin-suppressing than blue screen light at night.
Salt lamps are popular for ambiance and wellness marketing. Peer-reviewed research does not show meaningful air purification or clinical health effects from household salt lamps. They do provide warm, low-color-temperature light that many people find relaxing in the evening.
Air Purification Claims
Marketing often claims lamps remove allergens and pollutants. No controlled study shows room-scale air cleaning from a salt lamp. HEPA filters and ventilation do that job.
Negative Ions
Heated salt may release trace negative ions, but measured output from lamps is far below commercial ionizers or natural sources like waterfalls. Effects on mood at those levels are unproven.
What Lamps Actually Do Well
Warm amber light is pleasant and less melatonin-suppressing than blue screen light at night. Many buyers value lamps as décor and nightlights rather than medical devices.