REEL Blood - Lung Formula reads well on all skin colors especially on dark clothing, or dark surfaces. It simulates the bright color of oxygenated (artery) blood from the lungs and works well for fresh wounds, gushing or spurting blood needs. The color is highly opaque, very washable, and a great all around blood for most scenes, and staging scenarios. Mixing REEL Blood - Original Formula, with this Lung Blood Formula in streaks and blobs makes for the most realistic looking bleeding wounds for TV and Film use, as well as casualty simulation exercises. Ingredients: Carbohydrate based. This is a professional use proprietary product, so specific product ingredients are not disclosed as they can be withheld as trade secret information. Any relevant health hazards and physical properties relevant to product are disclosed in this description. This product is formulated to be used topically on skin only for theatrical/cosmetic use. WARNING: Because REEL Lung blood uses a large amount of opacifiers in this product DO NOT USE IN THE MOUTH. Not to be ingested. Do not use in eyes or any other open orifices of the body. Not for body contact circulation systems (i.e. showers) as bacteria contamination will occur. Once used--discard.