If you look at the Mona Lisa carefully, you’ll see she doesn’t have any facial hair.

(Now I don’t mean just facial beardy / moustachy hair, I mean she doesn’t have any eyebrows or eyelashes!  I hadn’t even realised this until Pure Moon pointed it out on the forum!  Some people say it was normal in those days to pluck out facial hair, but … there’s another theory – see next post.)