The Substance 2024 Cast Members. The substance is a science fiction horror film that follows a group of individuals as they uncover the dark secrets surrounding a mysterious substance with. The cast includes demi moore,.

The substance is a body horror film about a former actress who undergoes a treatment to become younger and more attractive. Wenlei ma the nightly (au) the substance wields its power not with the precision of a scalpel but a jackhammer.