ARcore for facemesh transformation?

[arianaa30]

Unfortunately SE wasn't helpful. So I understand we can use ARcore create custom textures and 3D models for Augmented Faces, like the augemntation of the Fox ears. But aside from augmenting 3D objects, can we use facemesh "transform" facemesh, for instance to make a filter that makes eyes smaller or nose bigger and change the whole face? If so, how?

[SagarPanwala]

How can we even place hat on head, render earrings and glasses ?