A Borehamwood clinic which has recently opened has become the first in Hertfordshire to offer asthma and allergy sufferers salt therapy and has brought the treatment to wider public attention. Salt therapy, or Halotherapy, can prove to be an extremely profitable venture with an increasing amount of people now seeking out a salt save therapy room. Salt therapy works by clearing mucus from the airways and decreasing inflammation caused by dust, pollen or pollution allergies. Sufferers are sat in a room which has its own internal climate and is layered with salt.