The Substance (2024), directed by Coralie Fargeat, is a bold body horror film starring Demi Moore and Margaret Qualley. It follows Elisabeth Sparkle (Moore), an aging celebrity who turns to a mysterious treatment to transform into a younger version of herself, played by Qualley, in a twisted commentary on Hollywood's beauty standards. With only seven days before the transformation reverses, the film delves into grotesque body horror, exploring themes of vanity, identity, and societal pressure.