Made from pure crystallized evaporated salt with no added anti caking agents synthetic dyes or denaturantsregenerating salt is essential for any dishwasher the integral part of automated dishwashing is the ion exchange which traps the calcium and magnesium ions of the water therefore trapping the hard water and feeding the soft water into the machine when this becomes blocked limescale can build up on glass and cutlery this natural salt ensures that the hard ions are exchanged and ensures