Complete immersion in clean water for approximately 15-25 minutes allows the polycrystals to absorb and retain a large volume of water.
When worn, the retained water gradually evaporates and draws away body heat creating a cooling effect directly on the main arteries of the neck – helping to cool the whole body.
The duration of the “Cooling” effect is increased by refrigeration. (but not required to still be highly effective)
Keep on reusing the Scarf day in, day out, and each evening, rinse off in clean water and allow to re-absorb any water that has evaporated and you’re good to go again!