Make colorful, squishy slime using school glue, baking soda, and contact lens solution; add glitter and practice mixing, measuring, and safe cleanup with adult supervision.



Step-by-step guide to make your own DIY slime (Super Slime Time!)
Step 1
Pour 1/2 cup of white school glue into your mixing bowl.
Step 2
Add 1/2 teaspoon of baking soda to the glue.
Step 3
Stir the glue and baking soda together until smooth.
Step 4
Add a few drops of food coloring to the bowl.
Step 5
Sprinkle a pinch of glitter into the bowl.
Step 6
Stir gently to combine the color and glitter evenly.
Step 7
Add 1 tablespoon of contact lens solution to the mixture.
Step 8
Stir until the mixture pulls away from the sides of the bowl and starts to clump.
Step 9
Knead the mixture with your hands for 1 to 2 minutes until it becomes stretchy.
Step 10
If the slime is still sticky add 1/4 teaspoon of contact lens solution.
Step 11
Knead the slime again until the sticky feeling is gone.
Step 12
Place the finished slime into an airtight container for storage.
Step 13
Wipe your workspace with a paper towel to clean up any spills.
Step 14
Wash your hands with soap and water when you are finished playing.
Step 15
Share your finished slime creation on DIY.org
Final steps
You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!


Help!?
What can I use instead of contact lens solution if I can't find it?
Use liquid starch as an alternative by adding about 1 tablespoon at the step where you add contact lens solution and stirring until the mixture pulls away from the sides of the bowl and starts to clump.
My slime is still sticky after kneading; what should I do?
Add the suggested extra 1/4 teaspoon of contact lens solution from the instructions and knead the slime again until the sticky feeling is gone and the slime becomes stretchy.
How can I adapt this activity for younger kids or older kids?
For younger children, have an adult pre-measure the 1/2 cup glue and 1/2 teaspoon baking soda and supervise the kneading and contact-solution step and hand washing, while older kids can experiment with different color mixes, glitter amounts, and knead 1 to 2 minutes themselves before placing the finished slime into an airtight container.
How can we personalize or extend the slime project?
Personalize the slime by stirring in small foam beads or glow-in-the-dark powder when you add the glitter and food coloring, scent it with a drop of extract, make layered colors in separate batches, then store the finished slime in an airtight container and share a photo on DIY.org.
Watch videos on how to make your own DIY slime (Super Slime Time!)
Facts about slime making and sensory play
✨ A little glitter makes slime sparkle, but too much glitter can make it grainy and less stretchy.
🧂 Baking soda (sodium bicarbonate) helps set slime by adjusting pH so the borate in contact lens solution can link the glue molecules.
🧼 Cleanup tip: warm water, soap, and a bit of vinegar can help remove slime from hands and fabrics — always have adult supervision for safe cleanup.
🧴 School (white) glue is mostly polyvinyl acetate, a polymer whose long chains give slime its stretchiness.
🧪 Slime is a non-Newtonian fluid — it can flow like a liquid slowly but act like a solid when you pull it quickly.


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