lamp’s light bulb.
The Negative Ions Information organization did a controlled test on salt crystal lamp brands using an ion detector. They took the device outside where detection of naturally occurring ions were 
found and the test concluded that more negative ions were produced by everything outside the lamp. The results stated the lamp put out such a small level of neg ions that the ion detector stopped indicating but when removing the ion detector from near the salt lamp for a few minutes, they could again measure neg ions near the lamp (but couldn’t tell the exact level of ions).
That being the case and conclusion, only the individual using them can report what, if anything these lamps have done for him/her .
Thinking of trying it? You’re the substance and the source absorbing its ionic energies. That said, you will certainly know!
What doesn’t kill you can only make you stronger (or simply be a cute prop or conversation piece!)
Related: Don’t Use These Light Bulbs, They Are Killing You Softly
Related: Himalayan Salt
Related: Health and Home benefits of Himalayan Salt
Related: 10 Reasons to Have a Himalayan Salt Lamp in Every Room of Your House
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