Differing types of desiccant dehumidifiers do the job in other ways, but the leading procedure they use to extract dampness from the air is either absorption or adsorption. Absorption happens if the desiccant compound dissolves as it will take dampness from the air, as is the case with dampness absorbers. https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/