Also, just a thought... Cut some fresh leaves to add to jar and re-humidify. Probably one or two fan leaves would re-humidify from the 50s.
I had a lot of success using wetter bud and fresh cut stems to re-humidify, but not sure those are readily available. Leaves are probably just as effective.
I like the idea of using water from inside a cannabis plant to re-humidify cannabis