Polygiene® permanently stops the proliferation of bacteria and fungi that cause bad smells. To achieve this, it uses low concentrations of salt of silver (silver chloride), which has anti-microbe properties and is naturally present in water and soil, to work against the growth of bacteria and fungi. The permanent treatment is applied in the finishing stages of the textile process. Field and lab tests have shown that odours are kept to a minimum for a longer time that the useful life of the item of clothing. This can be achieved thanks to the fact that the technology is permanently integrated in the fabric and does not go away after washing.