Different types of desiccant dehumidifiers do the job in various ways, but the primary procedure they use to extract moisture from the air is either absorption or adsorption. Absorption occurs when the desiccant substance dissolves as it will take dampness from your air, as is the case with humidity absorbers. https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/