Due to time constraints, Persin subcontracted the build of Monstro Eliasue’s suit to a U.K.-based company. “We had two full suits, one for a stunt double, and a half-built suit for Margaret, which she wore for closeups.” Persin and his team took care of all the effects, including the boob that squeezes out of one of Monstro’s many holes.

Is she fat enough? How many boobs? Maybe we should add a jaw here.” The special effects artist behind Moore’s transformation in “The Substance” tells us how they pulled it off.

The Substance, starring Demi Moore, is a bright and showy body horror film about aging and the hypersexualization of the female body. But it doesn’t go much further than illustrating at great length that there are nasty cultural attitudes toward older women.