A patented super absorbent polymer crystal forms the basis for Ci-GelTM. No chemicals required, no guessing, no mess. Simply remove the cap and place the Ci-Gel container into your humidor to provide lasting humidification. To refill, simply add distilled water. Food safe and cigar friendly. You could pay as much as 5 times more for branded polymers with food coloring added or you can get the same stuff for a fraction of the price. Contains the same core material as found in the popular Drymistat humidification.