Different types of desiccant dehumidifiers perform in other ways, but the principle approach they use to extract humidity with the air is both absorption or adsorption. Absorption takes place in the event the desiccant substance dissolves as it takes humidity through the air, as is the case with humidity absorbers. https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/