Below is a very interesting short film from BBC about how hyper-realistic face masks are being manufactured by a small company in Japan.
http://www.bbc.com/future/story/20190130-a-japanese-company-is-making-eerily-hyper-realistic-masks
Using 3-D modeling & printing techniques, plus some digital photo overlays and fine-tuning by hand, a highly lifelike mask can be created.
The founder of the company sees lots of potential for incorporating with robots. Sorta creepy, sorta cool!