The Substance (2024)

There is a particular kind of film that arrives with a genuine charge of ideas behind it, something that sets out not just to unsettle but to say something about the world we live in. The Substance, the 2024 co-production between France, the United Kingdom and the United States, is that kind of film, at least for a good portion of its 141-minute runtime. Written and directed by Coralie Fargeat, it centres on a fading celebrity who acquires a black-market drug promising to generate a younger, biologically enhanced version of herself. The film wears its preoccupations openly: the entertainment industry's relationship with female ageing, the gap between public image and private selfhood, and the body as something to be bought, sold and discarded. It is the sort of premise that, in less assured hands, might collapse into exploitation or heavy-handed allegory. Whether Fargeat's execution matches her ambition is, of course, precisely what brings us here.

Fargeat made her feature debut with Revenge (2017), a film that announced her as a director with a very specific, punishing visual intelligence and little interest in playing things safe. The Substance is her follow-up, produced under the Working Title Films banner alongside Blacksmith, and it arrived on the festival circuit to considerable noise, winning the Best Screenplay award at Cannes. The production leans on practical effects work, which will be familiar territory for fans of body horror with a long memory, and the film's visual approach owes something to the heightened, lurid style of 1970s and 80s genre cinema. For horror aficionados who have spent time with films like You Won't Be Alone, another horror film covered on this blog, or the more gonzo end of things as seen in Castle Freak, the appetite for ambitious, effects-driven genre work will be familiar. French cinema has its own tradition of genre films that push against perceived good taste, and Tiger Stripes, another French production reviewed here, touched on some of the same body-transformation territory, albeit from a very different angle.

The cast is central to whether any of this lands. Demi Moore takes the lead role of the fading star, and it is worth pausing on that casting for a moment. Moore has had one of the more publicly scrutinised careers in Hollywood, her name long attached to conversations about image and reinvention. Audiences who know her earlier work, from animated features like The Hunchback of Notre Dame to comedies like Beavis and Butt-Head Do America, will find this a considerable departure, the role demanding a kind of physical and emotional exposure that most performers would hesitate over. Opposite her, Margaret Qualley plays the younger iteration of the same person, bringing a very different energy to what is, in effect, the same character by another name. Dennis Quaid appears in a supporting role, playing the kind of industry figure the film clearly has little sympathy for. It is a polished but provocative ensemble assembled in the service of a film that clearly intends to leave a mark.

The Substance (2024) is a bold, audacious dive into body horror that pushes the genre to its most visceral and visually stunning extremes. Directed by Coralie Fargeat, the film stars Demi Moore as a fading Hollywood star who undergoes a radical procedure to create a younger, genetically enhanced version of herself (played by Margaret Qualley). The premise crackles with thematic potential: aging, identity, self-erasure, and the grotesque demands of fame. And for much of its runtime, it delivers with gorgeous cinematography, razor-sharp satire, and truly astonishing practical effects that render transformation and decay with stomach-churning realism. Moore gives a fearless, physically committed performance, and Qualley matches her with manic, glittering energy. The first two acts are tense, stylish, and deeply unsettling, blending Cronenbergian unease with biting commentary on beauty standards and female obsolescence. But the film stumbles when it becomes clear that Moore’s character never truly "lives" through her younger self, she’s sidelined, watching from the shadows while her “replacement” experiences freedom, desire, and adoration. That narrative choice drains the core conceit of emotional payoff: if she doesn’t get to reclaim youth, what was the sacrifice for? The final act veers into excessive, almost self-parodic territory (less cathartic than exhausting) culminating in a finale that prioritizes shock over meaning. What began as a sharp psychological thriller devolves into spectacle without soul, squandering its rich setup for a climax that feels more like a fever dream than a resolution. The Substance is visually groundbreaking and thematically provocative, but ultimately undone by a story that doesn’t follow through on its own promise. Amazing effects, strong performances, and a killer premise, but a disappointing finish keeps it from greatness.

I keep coming back to that central structural choice, the decision to keep Moore's character on the periphery of her own second chance, and I think it is where the film loses the thread it spent so long weaving. There is a version of this story that would have stayed with me for weeks. Instead, I left the cinema admiring the craft while feeling oddly cheated by it. The effects work alone deserves recognition, and Moore's performance is the kind of thing you do not forget in a hurry. But a film that promises to get under your skin probably should not end by simply covering you in something unpleasant and calling it a conclusion. Impressive, frustrating, and a genuine missed opportunity.

Rating: ★★★  | Year: 2024  | Watched: 2026-04-27

View on Letterboxd →

Trailer

▶ Watch the official trailer for The Substance (2024) on YouTube

Where to watch

Watch in the UK
Stream: Paramount Plus · MUBI · MUBI Amazon Channel · Paramount+ Amazon Channel
Rent: Apple TV Store · Rakuten TV · Amazon Video
Buy: Apple TV Store · Rakuten TV · Amazon Video · Sky Store
Physical: Amazon UK · Zavvi

Watch in the US
Stream: HBO Max Amazon Channel · YouTube TV · MUBI · MUBI Amazon Channel
Rent: Amazon Video · Apple TV Store · Fandango At Home
Buy: Amazon Video · Apple TV Store · Fandango At Home
Physical: Amazon US

Affiliate disclosure: Movies With Macca may earn a small commission on purchases or subscriptions started via these links. It costs you nothing extra.

Related on Movies With Macca

More with Demi Moore: Beavis and Butt-Head Do America (1996)
More from France: Fantastic Planet (1973) · Letter from Siberia (1957) · Lessons of Darkness (1992) · Here and Elsewhere (1976)
More from the 2020s: Mononoke the Movie: The Phantom in the Rain (2024) · Mononoke the Movie: Chapter II - The Ashes of Rage (2025) · The Long Walk (2025) · Americana (2023)
More horror: Invasion of the Body Snatchers (1956) · Viy (1967) · Nightmare City (1980) · Angst (1983)
More science fiction: Invasion of the Body Snatchers (1956) · Fantastic Planet (1973) · Nightmare City (1980) · The Long Walk (2025)