While it didn't receive quite as negative a critical reception as fellow DC Extended Universe entries Batman v Superman: Dawn of Justice and Suicide Squad, Justice League did have its fair share of problems. As you will see when [Mission: "Impossible - Fallout] comes out, to have a fake mustache on would not have been a possibility".
Since, due to his professional commitments, Cavill was unable to shave off his facial hair, Warner Bros., the makers of "Justice League", had to digitally remove his mustache from the reshot scenes.
I was slightly surprised.
Speaking with Empire Magazine, the actor explained: "When we made a decision to go for the moustache, I certainly wasn't expecting all the events to unfold as they were going to unfold".
He's referring to the Justice League reshoots that necessitated CGI removal of said mustache and also gave the internet a lot of much-needed laughs. "Of course, if I'm on the press tour I'm in the movie".
Speaking on his inability to shave off his mustache, Cavill explained that it would not have been feasible to shave off his face as some of his scenes would not have been possible with a fake one owing to various stunts. "You can't win every time".
Empire Magazine interviewed Henry Cavill recently and he talked about a wide range of Justice League topics, from the reshoots to his mustache, and even the Superman marketing (or lack thereof). So unfortunately for Justice League, the mustache had to stay on when he reprised Superman, and the end result didn't look great. Either way, people still want to see Zack Snyder's original vision for Justice League. Henry teased that we'll find out why when we see Fallout. In any case, Superman is now back among the living in the DCEU and has resumed his superheroic career, and ideally whenever he next appears, Cavill won't have to worry about facial hair causing major problems.