I don't leave Gracie's in, her hair is quite long and like MeAndMyOlivia said, I find that it gets tangled. I take hers out once we are in bed and massage her head some. She seems to really enjoy it and will close her eyes while I do it. I have long hair and my head feels good when I take my ponytail out at night. I think it's beneficial for the scalp to relax at night.
