You cannot short rest in DnD if you're out of hit dices ?
Dirt on armor&clothing more than on faces please.
Maybe a short rest (or idle animations as suggested above) removes dirt on faces and hands.
But only a long rest removes dirt from clothing & armor.
This would be good.
As Andreas said, it's way too intense now... I love the feature too but it may be a bit ridiculous sometimes. A few improvement would make it perfect.