When Toronto hairstylist Kristjan Hayden was watching “The Secret Lives of Mormon Wives,” he began to notice a pattern. “I thought, ‘Huh, they all have the same hair,’” says Hayden.

The modern Mormon woman is more palatable, defined less by her garments (or, more crudely, “magic underwear”) than her big-barrel curls and Stanley tumblers, her dirty soda and “clean girl ...