The MetaHuman Groom Advanced Kit for Houdini 21 provides an advanced groom setup in Unreal Engine (UE) using a source project from Houdini, serving as a reference for authoring complex, MetaHuman-compatible grooms for FAB. This kit includes an example project and assets demonstrating the process of creating, styling complex groom components such as ponytails and braids, and integrating a groom into UE. It features a groom-ready Houdini project scene containing all grooming geometry and node-based grooming configurations. This setup includes tools such as MH Groom Workspaces and supports key workflows including attribute painting, advanced groom styling, viewport visualization, and exporting grooms via the MH Groom Export tool. The scene references Houdini Digital Assets (HDAs), which must be downloaded separately via MetaHuman for Houdini.