Science, Tech, Math › Science Edible Glowing Blood Slime Edible Slime That Looks Like Blood and Glows in the Dark Share Flipboard Email Print Will Patton / Getty Images Science Chemistry Activities for Kids Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated March 06, 2017 What couldn't Halloween costume or party benefit from some blood slime? This particular slime is also edible, non-sticky and glows blue-white under a black light. It's easy to make! Glowing Blood Slime Materials 1 teaspoon soluble fiber (e.g., Metamucil)8 ounces (1 cup) diet tonic waterred food coloring Make the Slime! Stir the fiber into the tonic water.Add a drop or two of food coloring. The slime gets darker during preparation, so don't add too much food coloring.Heat the liquid in a microwave-safe container until it boils. Depending on your microwave power this may be anywhere from 1-4 minutes. When the mixture boils, pause the microwave and stir the slime.Cook the microwave another 1-2 minutes. Stir it.Repeat the cooking/stirring cycle a total of 4-5 times, until the slime develops a gelatinous consistency. Carefully remove the slime from the microwave. The container will be very hot!Let the slime cool before you handle it. You can play with it, decorate with it, or even eat it. No matter what color you made your slime, it will glow blue-white under a black light or ultraviolet light. The glow is fluorescence from the quinine in the tonic water.Store your slime in a sealed bowl or plastic bag. If you are just decorating with it, it's fine at room temperature, but if you plan on putting the slime in your mouth, it's a good idea to refrigerate leftovers.While the slime won't stick to most surfaces, the food coloring will cause it to stain fabrics and skin. Clean up slime with soap and water. Your favorite stain remover will take out the food coloring. Watch a video of this project.