It never fails to amaze me that when you see people on a show or in a movie hacking their hair off with a dull blade, the next thing you see is a scene where their hair is styled perfectly, with not a single strand out of place.
the show is about an alien from another planet who looks identical to humans and yet has powers beyond those of any man on the planet......and thats what amazes you?
I think he's talking about a general "problem" in movies and TV rather than a specific one in this show.
We accept the alien bit because that's the premise. But it's a staple/cliche in movies and TV for people to be able to perfectly cut their hair by hacking at it with a dull blade.