There are a variety of types of salt
• Cooking, bathing, Epsom, salt scrubs
• Himalayan, Dead Sea, Mediterranean, Caribbean, Pharmaceutical

The only salt to use for dry salt therapy for the halogenerator is pharmaceutical grade:
• It is pure and natural sodium chloride that does not contain any additives
• All other salt has trace elements and minerals that when ground into microparticles can reach deep into the respiratory tract could cause adverse reactions
• Depending on where the salt is mined from when ground into microparticles some dirt and/or clay could be released
• All clinical research and studies are based on pharmaceutical salt.