You see, certain cultures already put this line much closer to facial expressions, and find it appropriate to wear veils of some kinds to conceal them.

I'm not only talking about e.g. Muslim cultures; veils were pretty normal in 19th century's Europe (though not as thick as in 16th-century Europe).

So my question is where the line will be drawn, because removing the unconscious form humans seems infeasible, no matter how cultures try.