Hair tool is a plugin for creating animated hair and cloth.
Physics are implemented with a custom engine based on Verlet integration, and executed on GPU (Compute Shader). You can configure elasticy, gravity, drag, and curveness in editor. Sphere Colliders and Swept Spheres can be added to bones so it interacts with body a realistically. Unity WindZone component is supported.
Animation Skinned mesh renderer is supported. Blend Shapes are supported
Lighting is based on Kajiya-Kay reflection model. Dirrectional, Point, Spot lights, Cookies and Normal Depth Texture are supported.
Shadows are implemented as a Unity shadow caster pass.
Editor is integrated in Unity. Also you can create hair geometry with Maya, Blender and 3dmax.