10 Insane Rules The Big Bang Theory Cast Had To Follow
6. The Guys Have To Be Clean Shaven
Being close friends, the four guys in The Big Bang Theory have a lot of similarities. They love science, obsess over Star Trek, play video games, and don't have much luck with the opposite sex.
However, there is one trait they share that most viewers don't give a second thought to - they are all clean-shaven. At first, nothing seems particularly odd about this observation. But apart from Jim Parsons, the other three actors normally have facial hair in their everyday lives. Despite this, the four characters never have beards, unless it fits with the narrative.
The reason why Sheldon, Leonard, Howard, and Raj don't have beards is very simple - they're not allowed to. Since the guys are meant to be nerds, the actors must remain clean-shaven to look... well... nerdy. Johnny Galecki, Kunal Rayyar, and Simon Helberg look so rugged and manly while sporting a bit of fuzz, it's hard to take them seriously as dorks who struggle with their love lives. To maintain their personas as geeky scientists, they all must have zero facial hair during filming.