https://wccftech.com/the-witcher-3-mod-characters-faces/

A fresh new mod has been released for CD Projekt Red’s popular role-playing game The Witcher 3, bringing some major graphics enhancements,

The new mod is simply called the Character Faces Improved mod and it enhances faces for most major characters seen in the main campaign as well as in the Hearts of Stone and Blood and Wine expansions. Regular characters like villagers have yet to be improved, but the mod is updated very frequently so they should be improved as well in the near future.