The salon's name "Hair by O" echoes the name Iago, a character from Othello.
Cassio is Othello's loyal friend, as Cassio is to Odette.
There are several references to the play, 'Othello' : the title, the names of the awards (Gratiano, Brabantio's brother), Cassius Bennett (Cassio, Othello's lieutenant), Ruby Montano (Montano, the Governor of Cyprus), Cyprus Mews (Cyprus, the setting for the play).