Magic Blood PowderTM from Graftobian is a big hit with EMS, stage and theater, FX, Haunted House and Halloween people. Just dust a small amount of the powder on the area needed and create great special effects. A water activated powder that when applied is invisible, but when sprayed with water looks like the result of a motor cycle accident. Drag a wet knife across powdered skin for a bloody cutting effect. Or a few tablespoons into a gallon of water will yield a very economical splashing blood. Great accessory for any blood or gore costume/scene. This product may stain some fabrics.