There are four kinds of blood to consider, each with it's own characteristics.
You can also choose arterial(bright) or venous(dark) versions.
STAGE BLOOD: Syrupy consistency. Doesn't dry and will continue to drip away from application. Good for blood capsules. Edible
COAGULATED BLOOD: Thicker stage blood, will stay where it's put. Dries completely. Great for scab effects.
SQUIRT BLOOD: Water based blood that behaves like real blood. Does dry and will go through tubing for special effects applications. Great for airbrush or splatter.
3-D GEL BLOOD: Used to create realistic three dimensional special effect additions to a character’s makeup.
The red in the blood may stain skin and clothing. Use Barrier Spray to minimize any staining of the skin.