How to fix deforming in face 3D models?

To fix deforming in face 3D models, adjust rig weight painting or blend shapes to ensure natural vertex movement with facial expressions. - **Refine weight maps**: Deforming often stems from uneven vertex influences. Use tools like Blender’s Weight Paint mode or Maya’s Component Editor to smooth weights, especially around high-movement areas (mouth, eyes). - **Align blend shapes**: If blend shapes cause stretching, re-match their topology to the base mesh for seamless blending. - **Test and balance**: Isolate problem spots by testing small movements (e.g., a slight frown), then use symmetry tools to equalize weight distribution on both sides of the face. By focusing on these key areas—weight balance, blend shape alignment, and targeted troubleshooting—you’ll resolve most face model deforming issues.