Hair Farm is the ultimate hair plugin for 3ds Max.
Hair Farm is a complete hair solution for 3ds Max. It is specifically designed for CG professionals who wish to create gorgeous hair quickly and precisely. It comes with over 50 different tools for hair modeling, animation and rendering.
It is fully integrated into 3ds Max and allows you to use many existing features of 3ds Max with hair objects.
You can find more information, tutorials and documentation here: http://www.hair-farm.com/