I am wanting to put some beards in a shadow box, but many of them have curled up like a banana from being kept in a ziploc bag the last few years. Is there any easy way to straighten them back out so they will hang straight down?
Get them wet and place lay them on a solid surface with something heavy on top of them and they'll straighten out.
I wet them and then roll them up individually in a piece of aluminum foil for a week or two. Once you unwrap them you may have to shake them to get them thick and full again.