Looking for a bold and satisfying slime to make? This black slime is perfectly stretchy, wonderfully smooth, and deeply coloured for a striking look that’s so fun to play with! It’s a fantastic sensory activity and has just the right amount of stretch and squish to keep hands busy and minds engaged.
With its rich, glossy black colour and simple ingredients, this slime recipe is easy to make and seriously fun to knead. We’ll walk you through how to get that perfect texture, how to colour it just right, and how to keep your slime fresh for days of play.
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How to Make Black Slime
Watch the step-by-step video tutorial:
Instructions:
Step 1: Find what you need
- Gather your supplies and materials.
Step 2: Mix the first ingredients
- Add 1/2 cup of clear glue to a bowl.
- Pour in 1-1/2 teaspoons of baking soda.
- Stir the glue and baking soda together well, until the baking soda is completely dissolved.
- Add a generous amount of black acrylic paint (probably about 2 teaspoons) to the bowl.
- Stir well, until the paint is nicely combined into the glue. Add more colour, as needed.
Step 3: Activate the slime
- Pour 2-1/4 teaspoons of contact lens solution into the bowl.
- Stir until you can’t anymore and the slime comes away from the bowl. Press the mixture down to combine all the glue and incorporate all the contact solution.
- Pick up the slime from the bowl and begin stretching it. It will be quite sticky at first, but don’t panic! Continue folding and kneading the slime and using it to clean itself off your hands.
- Continue stretching the slime until it no longer sticks to your hands. You can add a couple more drops of contact solution if it’s still a tiny bit sticky.
- Your black slime is complete!
Helpful Tips:
- Knead it well: If your slime feels sticky at first, don’t worry—that’s totally normal. Just keep kneading it with your hands. The more you work it, the less sticky it will become. And you can always add a few extra drops of contact lens solution to firm it up a bit.
- Try a Borax activator: Don’t have contact solution? No problem! You can make your own slime activator by dissolving 1 teaspoon of Borax powder into a cup of hot water. Stir well until it’s fully dissolved, and then add it to your glue mixture once it’s cool. Add a little bit at a time until the slime comes together.
What’s the best way to colour black slime?
We highly recommend using black acrylic paint to colour your slime. It gives the slime a deep, rich shade, and it’s really inexpensive (ours comes from the dollar store).
Black food colouring also works (though it doesn’t make the slime quite as dark), while mica powder will give the slime a pearlescent shimmer.
What glue is used in this black slick recipe?
Clear glue is recommended to keep your black slime looking really dark and rich. It also makes a really shiny slime that’s super stretchy and smooth.
You can also use white glue to make your black slime, but without a lot more paint it will make the slime more of a dark grey colour.
How should slime be stored?
Once you’re done playing with your black slime, store it in a plastic or glass airtight container with a lid.
How long does black slime last?
If you store the slime properly, your black slime will last at least a week. In fact, you might even like how the slime feels more after a day or two!
Always wash your hands before and after playing with slime and get rid of it if the slime feels or smells “off”.
Black slime is such a fun twist on a classic slime recipe. It’s bold, eye-catching, and extra fun to squish and stretch! Whether you’re making it for Halloween, a group crafting session, or just because, this black slime recipe is a great way to add a little drama to your slime play.
Here’s even more fun slime recipe ideas:
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