Horror Cinema - "The Substance"

In the organizer's words:

Our popular Horror Cinema is back! We are showing unusual horror films from all over the world and classics that have not been seen on the big screen for far too long - each in the original version with German subtitles.

If you follow the instructions, what could go wrong?

English original version with German subtitles | English original version with subtitles

Original title | Original title: The Substance

PG 16 | USA 2024 | D: Coralie Fargeat | D: Demi Moore, Margaret Qualley, Dennis Quaid

A fading celebrity decides to use a black market drug, a cell-replicating substance that temporarily creates a younger, better version of herself. [imdb.com]