Higgsfield FACS Director

Direct a face the way an animator does — by muscle, not by mood. FACS (the Facial Action Coding System) names each facial movement as an Action Unit: AU12 is the lip-corner puller (smile), AU6 is the cheek raiser, AU4 is the brow lowerer. Put those codes in a Seedance 2.0 prompt and the model renders the corresponding action. It is the highest-resolution facial control available on the platform, and it is where forced smiles, uncanny faces, mixed emotions, and honest micro-performance in close-up dialogue come from.

This skill is a facial-control layer on top of ../higgsfield-seedance/SKILL.md. Every FACS prompt is still a Seedance prompt — six-slot formula, Prompt-Craft Laws, preflight linter. FACS only changes how you specify the face: AU codes instead of (or alongside) emotion words. It is the muscle-level case of the Voice Rewrite rule "describe physics, not emotion."