There’s something magical about slime, but slime that glows in the dark is even better! Whether you’re looking for a fun rainy day activity, a Halloween craft, or an exciting science experiment, this glow in the dark slime recipe is easy to make with just a few simple ingredients.
Kids love stretching, squishing, and watching the slime glow under a black light or in the dark. Best of all, it only takes about 10 minutes to make.
Supplies List
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- 1/2 cup clear glow in the dark school glue
- ½ teaspoon baking soda
- 1 tablespoon contact lens solution (must contain boric acid and sodium borate)
- Glow in the Dark Pigment Powder (optional but reccomended)
- Stir Stick
How to Make Glow in the Dark Slime
Step 1: Pour in the Glue
Add 1/2 cup of glow in the dark clear glue to a mixing bowl.
Clear glue creates the best glowing effect because light passes through the slime more easily than white glue.
Step 2: Add the Glow Pigment Powder
Mix in 1/2 teaspoon of glow-in-the-dark pigment powder until completely blended. This is optional but will result in a much brighter glow in the dark than just using the glue. I like a vibrant glow, but it is a matter of preference.
You can also stir in:
- Glow glitter
- Small glow beads
- Glow in the Dark Paint
Avoid adding too many decorations since they can reduce the slime’s stretchiness.
Step 3: Stir in Baking Soda
Mix in the baking soda until smooth.
The baking soda helps prepare the glue for the activator.
Step 4: Add the Lens Solution
Slowly add the contact lens solution while stirring continuously.
Within a minute, the slime will begin pulling away from the sides of the bowl.
If it’s still sticky, add a few drops of contact solution at a time until it reaches the perfect consistency.
Be careful not to add too much, or the slime may become stiff.
Step 5: Knead the Slime
Once the slime comes together, remove it from the bowl and knead it with your hands for several minutes.
As you knead:
- It becomes smoother.
- It stretches better.
- It becomes less sticky.
If needed, add one or two additional drops of activator.
Step 6 – Get Glowing
The glow is best when allowed to charge while exposed to light.
Place the slime in a Ziploc bag.
Squeeze out as much air as possible.
Place it in a bright location. (not too hot)
Bright Locations
- Place the slime under a bright lamp for several minutes.
- Use a UV or black light.
- Cool window in bright sun.
Tips and FAQs
Fun Variations
Galaxy Glow in the dark Slime
Mix blue, purple, and green glow colours with silver glitter.
Monster Slime
Use neon green paint and add googly eyes.
Halloween Glow in the dark Slime
Mix orange glow paint with black glitter and plastic spiders.
Space Slime
Add star confetti and holographic glitter.
Neon Rainbow Slime
Make several colours and swirl them together without fully mixing. Don’t overmix.
Tips for the Best Glow in the Dark Slime
- Knead thoroughly before judging the texture.
- Add lens solution slowly.
- If adding colour, choose a light colour and add sparingly
- Store in a Ziploc bag with air squeezed out.
- Wash hands before playing to keep slime clean.
- Recharge the slime under bright light before using.
Can I use plain white glue?
Yes, but the glow effect won’t be as good as it is with clear glow in the dark glue. If using white glue, add double the amount of glow in the dark pigment.
Why is my slime sticky?
Add a few drops of contact solution and continue kneading until smooth.
Why is my slime too hard?
Too much activator was added. Try kneading in a small amount of clear glue to soften it and bring it back to the right consistency.
How long does homemade slime last?
Most slime stays fresh for 1 to 3 weeks when stored in an airless Ziploc bag, and slightly less in an airtight container. When playing with slime, make sure your hands are clean. Particles and oils from your skin can shorten its lifespan.
When playing with homemade slime, it can sometimes become sticky. If this happens to you, let it sit for a few minutes. Sometimes the heat from your hands can warm the slime and make it sticky.
Making your own glow in the dark slime is a quick, affordable, and exciting DIY project that’s perfect for kids, classrooms, birthday parties, and family craft days. With just a handful of simple ingredients, you’ll have a stretchy, glowing slime that’s as entertaining as it is easy to make.
Charge it under a bright light, turn off the lights, and enjoy the glowing fun!
This website contains affiliate links. As an Amazon affiliate, I earn a small commission from qualifying purchases (at no cost to you).