Himalayan Salt Lamp is made of natural Himalayan pink salt. Himalayan salt, also known as rock salt, is mined exclusively in Pakistan. These lamps not only bring a warm ambience to any room but also have many health benefits by neutralizing the air in the room they are placed in. Moreover, they are known to purify the air, improve sleep, reduce stress and promote general sense of wellbeing. They gradually ionizes the air and removes microscopic dust particles which makes it an excellent product for asthma sufferers. The lamps are perfectly placed in any room but provide most benefit in a bedroom or sitting area where they can aid restful sleep, better mood, increased concentration and stress reduction. Himalayan salt is hygroscopic in nature which means that it will absorb moisture from it's surrounding. It's then usual for it to get damp when that moisture is released. All lamps come with PYGMY 12w bulb and standard 3pin UK plug.