How Himalayan Rock Salt Lamp work?
The heat from the lightning instrument causes the Himalayan Rock Salt Lamp to draw water molecules from the air to the surface of the Himalayan Rock Salt Lamp also known as hygroscopy.

A gentle reaction takes place producing healthy negative ions which bonds with the positive ions (pollutants such as dander, pollen, mold spores) and neutralize them. The air is purified which means airborne bacteria, mould, viruses and allergens as well as respiratory irritants and asthma triggers cannot survive in the negatively charged environment freshen the air by removing any stale scent. The negative ions produced are also said to combat electro smog caused by the many electronic devices we use now.

*It is important to note that salt lamps do not produce negative ions themselves. Instead, their hygroscopic property allows them to attract moisture, humidity, or airborne water molecules. A heat source is required to accelerate evaporation, and it is this evaporation that produces the negative ions that are beneficial to human health.

Read more about Negative Ions