Humidity in the bathroom

Then I'm curious to see what comes of it.

Do you perhaps have a special plaster or a special wallpaper in the bathroom that can regulate moisture?

A sanding plaster from baumit (I would have to check the exact type with ). We generally used it for plastering - hallway, corridor, staircase as well as bathroom and shower bathroom (above the tiles).

Then I'm curious to see what comes of it.

Do you perhaps have a special plaster or a particular wallpaper in the bathroom that can regulate moisture?

I checked again today, it is "Baumit Scheibenputz SEP 01 weiß".