Steve Spangler’s

Vampire String Slime™ – Light Sensitive Color-Changing

(5 customer reviews)
  • 1 Liter – (33.8 oz)
  • Turn from eerie green to blood red when you hold it up to the light.
  • Battery-powered black light included
  • Vampire Veins features a special dye that reacts to both regular and ultraviolet light in different way
  • Explore the science of building polymers by cross-linking long chains of molecules

$34.99

SKU: WORM-650