I haven't washed my hair and let it dry naturally since I was a child. Always blow dry and straighten it. It's incredibly thick. Anyway, last weekend I got caught in the rain and my hair was soaked. I wasn't going anywhere so just left it ..over twelve hours later it was still damp! I have no idea how long it would take until fully dry... especially underneath, probably a whole day I'd imagine. It would probably end up with that horrible damp smell!
So how long would yours take?