Download Safety Data Sheet The basics A slightly opaque Blood with the consistency of syrup used for flowing blood effects.  The benefits Will not bead up, even when used over Rubber Mask Grease. Cleans up well with shaving cream or Ivory soap. The look Bright - To suggest arterial bleeding or oxygen enriched blood, also for use on dark colored surfaces, or in low-light situations. Dark - To suggest vascular bleeding or oxygen depleted blood. Also for use on light colored surfaces. Extra Dark - Same color as Drying Blood except that it does not dry. The pro tip To achieve optimum color, turn container up side down for several hours before use, then shake well. Squeeze out desired amount for flowing effect.