Revenge director Coralie Fargeat’s new body horror satire, The Substance, is now in theaters, and it is most definitely not for the squeamish.

The movie - particularly the last 30 minutes or so - contains some of the most extreme gore we've seen in quite some time, and there have been a number of reports of cinemagoers walking out before the end.

The story focuses on an acclaimed actress turned celebrity host of a daytime exercise program (Demi Moore) who gets replaced by a younger star, sparking a confrontation between the two women that ultimately turns violent.

That's the basic outline. If you want the very gory details, spoilers will follow.

Moore's character, Elizabeth Sparkle, makes use of a secret cell replicating procedure and the titular substance to produce a younger version of herself, Sue, played by Margaret Qualley. How is this accomplished? Well, Miss Sparkle "births" her clone through...