When we were brainstorming how to make our famous Slime recipe even spookier, we took a page out of the Vampire book. When you mix Vampire Slime Goo and Cross-Linker, it appears to be normal green slime, but hold the oozing blob up to a source of light and… GASP! The slime turns a blood-red! And that’s not all, turn off the lights and grab a black light – Vampire Slime is fluorescent and glows under ultraviolet light. It’s the spookiest, creepiest slime recipe we’ve ever come up with!