I know currently we can use bones, but usually it’s only good for movement of some locks of hair.
But for bushy hair, how can we dunamize it? like this guy’s hair. I saw unity has their own solution(GitHub - Unity-Technologies/com.unity.demoteam.hair: An integrated solution for authoring / importing / simulating / rendering strand-based hair in Unity.) but it’s still in its early stage
Why do you think the hair system is still on early stage? I’ve used it before and it looks pretty damn complete to me.
This said, short hair like the one you show there has very little movement. Chances are a simple vertex shader that moves the tips of the hair cards will be enough (similar to what you would use for foliage or grass).
Because version of the package is still 0.1.1, I don’t think it’s suitable for use in products XO
When the major number version of a package is 0, it means it’s an initial development and its API may introduce breaking changes in the future. Unless accompanied by a -preview or -exp suffix, should be sufficiently stable.
See: Unity - Manual: Versioning
The hair system has been used in production before (Unity used it in the Enemies and Lion demos), so I’d at least give it a try.
If you don’t want to mess with this package, using a vertex shader-based solution for giving hair cards some movement is a very cheap way of doing it.