Advanced users fix this by extracting the aa2_acc_hair_b.unity3d file and changing the Translate.Y value from a positive variable to -0.5 to properly align the bone root. 2. Missing or Invisible Hair Textures
If you want to dive deeper into custom character creation, let me know: aa2hairv1 repack
Includes fully colourable texture channels, letting users match the ported hair to any custom character's color palette. Advanced users fix this by extracting the aa2_acc_hair_b