I should have been more clear: Daryl’s blood or the blonde guy’s blood splattering the camera lens.
I remember that but I don't........I'll have to watch again tonight and maybe even get some insight into why Maggie had Enid cut her hair and why that was significant to the episode......
I’m guessing it is Daryl’s blood, as Dwight said something like “Don’t worry about it, you’ll be okay” or “it’s not that bad”.