Trivia: They did in fact shave Tony Randall's head to facilitate applying the different character makeups. According to an interview with Randall, for the one shot of him with hair he was fitted with "one of Gene Kelly's old toupees."
Trivia: Consistent with the title, but contrary to popular belief, Tony Randall did not portray all the "faces." The one he did not actually play is the Abominable Snowman.
Trivia: The hourglass of the Wicked Witch of the West from "The Wizard of Oz " is hanging inside of the circus tent. Borrowed no doubt from the MGM prop archive.
Trivia: In addition to portraying and voicing the eponymous 7 Faces (Dr. Lao, the Abominable Snowman, Merlin, Appolonius of Tyana, The Giant Serpent, Pan, and Medusa), actor Tony Randall also appeared without makeup in a two-second cameo, as a solemn spectator in the crowd, for a total of 8 roles in the film.
