The heat from a lighted Himalayan salt lamp attracts moisture. The evaporation of water through salt emits negative ions. How many negative ions a Himalayan salt lamp or salt candle holder can release depends on its size and how warm an electric light bulb makes it. A night-light sized salt lamp would be effective for an office cubicle. Naturally, the larger an area means a larger lamp is needed so that more more negative ions will be emitted.
The benefits of emitting negative ions into your living space:
(3) Reduces affects of Seasonal Affected Disorder