Sure ... why not. I'm in a good mood today, and when I did a search, nothing very informative came up (which surprised me, since I know this is question has been asked many times). Maybe I used the wrong 'key word' (rehydrate) in my search ...
Anyway ... good cigars can be re-hydrated without serious side effects ... but it takes time and patiance ...
Reconditioning the cigars depends in part on how long they have been without humidification. If they were left out for weeks or even months, then the process of rehydrating them and getting them in smoking condition could also take weeks.
The idea is to recondition the cigars slowly.
Place them as far away as possible from the humidification device for the first couple of weeks, and then move them closer over a period of six weeks.
Or, you might place the dry cigars in a box that has lower humidity for a week, and then put them in a box with slightly higher humidity for a week or two, and finally in a box with the proper 70 to 72 percent humidity. Again, the entire process might take up to six weeks.
If they were left out for a day or two, then the cigars shouldn't have dried out completely, and you should be able to recondition them fairly quickly.
If they are very dry to begin with, and you rehydrate them too quickly, the wrapper could crack and split.