Why is faces 3D model so broken?

Faces 3D models are often broken due to low-quality reference data, insufficient mesh optimization, or rendering/compatibility issues. Low-res scans/photos make facial features inaccurate; uneven polygon topology (bad mesh structure) causes distortions; incompatible software can glitch models when exported or viewed. To fix it, start with checking reference quality—if it’s good, use free tools like Blender to repair mesh errors or adjust rendering settings.