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In the period when the Crew Dragon Demo-2 mission was initially docking with the ISS, before the hatches were open, one of the tasks was to "dry the suits". They reported on the status later, indicating they had been drying for over an hour.

Is that to remove humidity from wearing the suits? Or some other reason?

Sorry, I can't get timestamps, but it's while docked and (only) the first hatch is opened.

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    $\begingroup$ After more than 19 hours in the suit there will be not only sweat within the suit. In zero gravity simple duties may take more time. $\endgroup$ – Uwe May 31 at 20:15
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    $\begingroup$ different but related: What does the interior of a spacesuit smell like? and Current and near-future space suit odor reduction technology $\endgroup$ – uhoh May 31 at 20:27
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    $\begingroup$ indeed @uwe - though they weren't wearing it for the full 19 hours. On the other hand, they were wearing it many hours before launch. $\endgroup$ – tedder42 May 31 at 20:40
  • $\begingroup$ Humans sweat. It's what we do. Sweating however is not that good for spacesuits. $\endgroup$ – David Hammen Jun 1 at 4:37

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