Differing kinds of desiccant dehumidifiers do the job in other ways, but the main process they use to extract humidity through the air is both absorption or adsorption. Absorption happens if the desiccant material dissolves as it will take humidity from your air, as is the case with humidity absorbers. https://thebookmarklist.com/story20784046/a-review-of-desiccant-dehumidifiers-in-cold-stores