Amongst the several broken bones that Dylan O’Brien suffered were reportedly several in the face.
It’s not obvious from this picture that anything happened to him at all, nevermind the intense trauma he suffered.
Following Dylan O’Brien’s accident earlier this year, when he was run over by a car on the set of Maze Runner: The Death Cure, production was halted to allow for the actor’s recovery.
We can guess from this photo that he hasn’t returned to filming yet; it’s unlikely that beard is part of his on-screen character.