How to Make Slime: 5 Easy Recipes for Halloween Fun
Want to surprise them with an afternoon of messy learning and fun?
Ever wondered what the secret is to making great slime?
In this article you’ll learn how to make my favorite Halloween slime recipes for haunted houses, classroom parties, Halloween parties or just an ooey-gooey good time.
Why Make Your Own Slime?
There’s nothing better than a hands-on project that will let kids make a mess and keep them engaged while they experiment with different textures and colors.
Halloween and slime go hand in hand, so my kids and I spent an afternoon creating fun, slimy, new recipes. Just in time for Halloween.
These slime recipes are perfect for haunted houses (place the slime in a covered bowl and let your guests touch it without seeing it).
Slime is also a perfect classroom party favor. Have kids make slime and then take it home in a zipper-lock bag.
Or make it as an after-school activity or whenever. Go ahead and make a mess! It’s in the name of science.
Ready to make some slime? It’s easy. Here’s a video that gives you an overview:
You’ll learn to make all the slime varieties shown in this video.
#1: Old-Fashioned Glue and Borax Silly Putty Slime
This kind of slime is simple to make and uses common ingredients. The consistency is thick and stretchy. To make the slime see-through, substitute Gel Glue for regular white glue.
The measurements do not need to be exact; the proportions are more important.
- Empty the glue bottle into the mixing bowl.
- Fill the empty bottle with warm water and shake.
- Add water to mixing bowl.
- Add a few drops of food coloring.
- Measure ½ cup of warm water into a plastic cup and add a teaspoon of Borax powder.
- Stir the solution and don’t worry if all of the Borax dissolves.
- Start stirring the glue and water mixture in the bowl and slowly add a little of the Borax solution.
- It’s time to abandon the spoon and use your hands to mix. Continue to add the Borax solution until the slime reaches the perfect consistency.
This video shows you how to make old-fashioned glue and borax slime.
#2: PVA Slime
The Slime-ologists at Steve Spangler Science have created the best slime you’ve ever seen using a PVA formula. PVA, or polyvinyl alcohol, is the substance used in many different products such as garden hoses, contact lens solution and water-soluble packages in detergent “liqui-tabs.”
- Mix 240 mL (8 oz or 1 cup) of PVA Green, Clear or Atomic Slime from Steve Spangler Science with 60 mL (4 tbsp) cross-linker solution like Borax.
- Use hands to mix and mush liquid into a slimy consistency.
- Mix in small plastic spiders, glitter, water balls or Orbeez, or Styrofoam beads to create an extra spooky batch for Halloween. Styrofoam beads will make the slime feel like Floam.
#3: Shaving Cream Slime
This slime isn’t actually fluffy, but reminds us of marshmallows. It has a different texture than regular slime and comes clean on hands. The shaving cream also makes the slime appear silvery and shimmery.
- Add shaving cream to either of the recipes above.
#4: Glow-in-the-Dark Slime
Who doesn’t love things that glow in the dark? It’s especially spooky for Halloween.
- Add zinc sulfide to any of the recipes above.
#5: Edible Slime
What’s better than making slime to squish and squeeze while disgusting your friends? Making slime you can eat.
Caution: Don’t add anything that isn’t food to this recipe if you plan on putting it in your mouth.
- Mix 5 mL (1 tsp) of Metamucil with 240 mL (1 cup) of water in a microwavable bowl. The fiber acts as the cross-linker.
- Add a drop or two of food coloring or Jell-O powder to change the color and flavor.
- Heat the bowl in the microwave for 4 to 5 minutes or until the slime starts to bubble over the sides of the bowl.
- Let it cool for a few minutes, and then heat again until it bubbles.
- You may need to repeat the heating and cooling a few times until the mixture becomes rubbery.
- Have an adult remove the bowl from the microwave and pour the VERY HOT mixture onto a plate with a spoon.
- Let cool completely.
- The slime can be cut or torn into shapes. You can also use cookie cutters.
Some Final Thoughts…
Don’t forget the science behind all of the messy fun.
Making slime is a great way to teach about the properties of polymers. A polymer is a long strand of molecules.
The PVA solution and glue start out as liquids, but are hooked together with a cross-linker like Borax (sodium tetraborate).
The Borax molecules act like tiny paperclips that hook together the long strands of PVA or glue molecules. Borax, or a cross-linker, is the secret behind every great slime recipe.
Slime is also a non-Newtonian fluid. It behaves like both a solid and a liquid. When you apply pressure, it turns into a solid (sort of) and breaks apart. When slime flows like a liquid, it stretches.
If you want more on the true science behind slime, polymers and molecules, visit our experiment page. You’ll also find several more slimy ideas.
What do you think? We want to see your original slime recipes. What do you add to make the perfect batch of slime? Share your concoctions (with pictures) in the comments below.
Steve Spangler is an author, teacher, toy designer, Emmy award-winning television personality and creator of a huge soda mess. His appearances on television demonstrate his passion for making learning fun. Other posts by Steve Spangler »