The “Blood Scene” in the movie Carrie is one of those iconic moments in horror movie lore that instantly burns itself into the memory of everyone who beholds the gruesome scene. Unfortunately, that fake pig blood was made by costume designers from a mixture of strong red dyes and uber-sticky corn syrup, which supposedly vexed everyone who touched it for days and days after the scene was first filmed. These days people who want to portray a bloody scene demand more modern solutions that are easy to work with and cleanup. Especially if you are portraying an undead being like a zombie, ghost, or ghoul.
Cosplay and high-end costume design relies on a level of authenticity in props and cosmetics that is visually interesting, while also making the viewer think about what they are seeing. It is supposed that when a person dies and they are reanimated as the undead that their blood isn’t going to carry the same crimson red color of a living being. That’s why this pint of Black Zombie Blood was designed to be so dark. It’s also easy to apply, set and easy to clean up afterward.