Salt crystals are thought to be beneficial to health. These lamps readily release negative ions into the air and act as natural ionisers to help breathing and relaxation.

"Salt lamps have proven their ability to improve breathing, reduce stress, reduce headaches and aid with asthma and allergies. Many of these problems are due to today’s electrical environment which is generating Positive ions that are harmful. Salt lamps when warmed by a bulb or tea lights or candle will emit negative ions that will saturate the surrounding air and neutralize the harmful positive ions thus making a fresh atmosphere - similar to a stroll by the sea or after a thunderstorm."