“It is most likely that scissors were invented around 1500 BC in ancient Egypt,” says the Wiki page. “The earliest known scissors appeared in Mesopotamia 3,000 to 4,000 years ago.” The Noah page says that “the Mesopotamian Epic of Gilgamesh, composed about 2500 BC, contains a flood story almost exactly the same as the Noah story in Genesis” and that most Biblical-era historians and scholars believe that the two floods are one and the same. It is therefore conceivable that scissors were (a) around during Npah’s time and (b) that Noah might’ve used a pair to trim his locks. But professional-looking buzz cuts were impossible. You can’t be too much of a stickler for hair realism in Hollywood epics. You have to be tolerant of eccentricity among hair stylists and vanity among actors. But I draw the line at accepting the existence of electric barber shears 2500 years ago.
Russell Crowe as Noah in Darren Aronofsky’s Noah.