Differing kinds of desiccant dehumidifiers function in various ways, but the key system they use to extract moisture with the air is either absorption or adsorption. Absorption happens in the event the desiccant substance dissolves as it will require moisture with the air, as is the situation with dampness absorbers. https://social4geek.com/story6492735/a-simple-key-for-desiccant-dehumidifiers-in-cold-stores-unveiled