Hello! I did a search but didn't find a thread about this so here goes...I have a nylon halter that is only ever used for things like leading, grooming, or hosing off my horse. He never wears it in the stall or outside. Somehow it has gotten more and more stiff over time. It started off so nice and flexible. Are there any tips for getting the original flexibility back? It has never been muddy but it does get dusty from hanging on the hook outside his stall. Any tips?