When Sweeney is shaving the Jailer right at the start of the program we see him shave his top lip clean, then it cuts to a close shot of Sweeney and back to the Jailer. His top lip now has a full layer of shaving foam.
Man in crowd:
She runs a brothel with these two. Obviously hasn't been pounding the justice enough. They'll make her pay in Newgate.
Mrs Lovett: Stop it! It's wrong!