Face rigging I did for the CGTarian online school. I use this rigging in all my work now, I like fast work in vuport, flexibility in poses, and the amount of time that I spend on adjusting the face. This setup took me 40 hours of working time. There are practically no nurbsCurve and complex deformers in this setup, only skinCluster joints and corrective blendShape.
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I share these techniques on the school course (RUS)
https://www.cgtarian.ru/online-kursy/rigging/rigging-lica-maya.html