Groom Brush brings real hair brushes to the Unreal Engine level editor. Comb, smooth, cut, clump, lift, curl and puff the strands of a Groom asset directly in the viewport, the way hair brushes work in Blender. The curves under the brush are drawn live, so you always see exactly what a stroke will change.
Works with MetaHuman hair and your own strand grooms. No binding is needed.
https://dev.epicgames.com/community/learning/tutorials/8kEOW/unreal-engine-metahuman-groombrush-ue5-9-release-and-next-update