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Fake Blood for Halloween: 3 Easy Ways to Make It

Going that extra mile and adding fake blood to your Halloween costume will easily up the gore factor. While it's easy to buy fake blood, it's cheaper and more fun to whip it up in your kitchen laboratory with ingredients you have in your pantry.

Close up image of frightening woman in halloween costume looking at the camera with open mouth over white backgroundDean Drobot/Shutterstock

Why make fake blood

While it’s easy to buy fake blood, it’s cheaper and more fun to whip it up in your kitchen laboratory with ingredients you have in your pantry. Plus, it will save you a last-minute run to the costume store on October 30—just like these last-minute Halloween costume ideas.

Cropped image of a blonde female face in halloween make-up isolated over gray backgroundDean Drobot/Shutterstock

Fake blood for skin

Fake blood that comes in contact with your skin or mouth needs to edible. Also, this type of blood needs to be slightly runny. After all, fresh blood is the best for dripping and splattering!

3/4 cup corn syrup
1/4 cup water
1/2 teaspoon red food coloring
5 drops blue food coloring
2 drops green food coloring
1 tablespoon corn starch

Combine the water and corn syrup. The corn syrup will make the blood a bit viscous—you want it runny, but not too runny. Add the food coloring. (Using green and blue makes the color more realistic.) Finally, mix in the cornstarch. This will thicken the mixture a bit more. Let is sit at room temperature for ten minutes before use. Note: this will stain skin and clothing.

Bloody Halloween composition: high angle view of ceramic crockery in blood placed on dirty gauze, witch finger cookies in bloody cupSeventyFour/Shutterstock

Fake blood for clothes

For clothes, you will need to make the blood a bit thicker and darker. This recipe is non-toxic and also made with edible ingredients. Ideally, you’d want to make a bigger batch of this fake blood so you can thoroughly soak your costume. This recipe uses “parts” versus exact measurements for the corn syrup and water. That way, you can make as little or as much as you like.

Corn syrup
Red food coloring
Cocoa powder

Mix three parts corn syrup thoroughly with one part water in a large bowl. Add a couple of drops of red food coloring into the mixture while stirring continuously. Keep adding more drops of food coloring until the blood is the desired color. Stir for at least five minutes to distribute the food coloring evenly. Add 3 tablespoons of cocoa powder to the mixture and stir. This thickens the blood. Keep adding the cocoa powder, a tablespoon at a time, until it reaches the consistency you desire. The blood will be thick but not lumpy, so it can sit on your clothing and absorb without running. Pair your fake blood with one of these 15 Halloween costumes you can only find at Target.

Wall from a haunted house built for Halloween. Sculpture was made by me so I hold any copyrights.Ronald Sumners/Shutterstock

Fake blood for guts

A batch of fake blood and guts is perfect for a haunted house, Halloween decorations, or as part of your creepy costume.

For the guts:

2 tablespoons corn starch
4 teaspoons water
2-5 drops red food coloring
1/2 teaspoon cocoa powder

Mix together the cornstarch, food coloring, and water in a bowl. Mix until you have a smooth consistency. Then, mix in the cocoa powder—small clumps are okay, it will look like blood clots. Use your fingers to press the mixture against the side of the bowl to form organ shapes. You may wish to mix in a little more cornstarch or cocoa mix to firm up or darken your organs.

For the blood:

2/3 cup chocolate syrup
1/3 cup laundry detergent
4 to 6 teaspoons red food coloring

This blood is not edible and should not come into direct contact with your skin.

Combine the chocolate syrup, laundry detergent, and food coloring. Mix until it’s a smooth consistency. Arrange the guts into whatever shape you desire. Cover the flesh and organs with the fake blood. If you want the blood to be a bit runnier, thin it out with water and a few drops of red food coloring. Find out what the fake blood you see in movies is really made of.

Debbie Wolfe
Debbie Wolfe is an author and freelance writer specializing in home, garden, DIY, and lifestyle topics. She covers lifestyle, culture, and craft content for Reader's Digest and contributes regularly to HGTV, The Home Depot, Walmart, Family Handyman, Realtor, Bob Vila, and more. Her book, Do-It-Yourself Garden Projects and Crafts (Skyhorse Publishing), features a variety of practical DIY projects to beautify your garden and home. Debbie holds a degree in Creative Writing and Earth Science from Northland College.