Some DForce-enabled hair models exists. They don't work well in many situations and tend to "blow up".
There are a some hair models with built in bones for posing, but not many. I'm thinking of a particular braid / pigtails model hair, can't remember the name now. UPDATE: my info was a little out of date. searching daz store returned a number of long hairs with rigging bones, e.g. taking it the the extreme:
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There's no Long Loose hair that works well *automatically* for situations such as lying down, where you would expect it to both be affected correctly by gravity and lay on top of (or slide off) body parts and nearby objects. The simulation problem for that is too hard for free bush-league poser software like daz.
In general you'll just have to work it out manually like everyone else does. in worst case meshgrabber can save you from ugly poke through.
*As with all things daz, you can achieve a lot more with secondary tricks and techniques, like partially hidden second-models, dformers, postwork image editing.
There has been some recent improvement in the simulation of hair in blender, with the smooth curve hair geometry nodes being generally available,
I assume professional 3d animation packages (3ds max / Maya) have more advanced tools. None of these systems can get away from the basic complexity of the physics simulation: to approach some level of visual realism, there needs to be 100s-1000s of individual strands iteratively simulated for gravity, wind, collision (self, body, 3rd object) and momentum, with constraints on length and flexibility while still being disproportionately narrow compared to length.
