HIMALAYAN SALT NIGHT-LIGHT DIFFUSER. This Himalayan Salt Night-Light Diffuser provides a restful and therapeutic sleep experience. The Himalayan crystal salt acts as a natural air purifier, releasing ionic energy and essential minerals to promote a feeling of relaxation and well-being. Add a few drops of your favorite essential oil and the heat from the light will diffuse the oil. 15W bulb included. ETL listed. 4.75”H.