People have been looking at Demi Moore’s body for more than 40 years. On the cover of Vanity Fair in 1991, nude and seven months pregnant. Rippling with muscles in GI Jane. Under strip club spotlights in Striptease. In her new horror film The Substance – which has become the most talked-about premiere at the Cannes Film Festival – we see her body again. Then again and again. But it’s gnarlier this time. A younger woman hatches out of Moore’s back, leaving behind two macabre flaps of flesh on either side of her spine. Over the course of the film, Moore ages and rots, every crease of her skin filmed with gooey sadism. It may be her shock ticket to an Oscar.

…

The film, from the French director Coralie Fargeat, has proven divisive already, with some critics calling it “an audacious masterpiece”, and others calling it tired hagsploitation with little to actually say about women, age or Hollywood. Regardless, Moore is earning the best reviews of her career. “Moore has never really taken a risk of this nature before,” wrote IndieWire’s David Ehrlich. “The places that risk takes her in the movie’s absolutely bonkers final act will have your jaw on the floor, if it’s even still attached to your body.” “Ripping into her best big-screen role in decades, Moore is fearless,” raved the BBC. “Extraordinary,” added The Telegraph, with Variety remarking that Moore’s performance “is rippled with anger, terror, despair, and vengeance”. There have been suggestions she could surprise-win the Best Actress prize at Cannes, which would then thrust her straight to the top of prediction lists for next year’s Oscars.