Mom's Best Recipes
Recipe

Cloud Slime

Soft, fluffy slime with that signature drizzle and stretch, made with easy pantry and craft-store ingredients. (Craft recipe, not food.)

Author By Matt Campbell
4.8
A large bowl of white cloud slime with a soft, airy texture on a bright kitchen counter, with a spoon resting on the rim
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Cloud slime is the cozy sweater of the slime world. It is airy, soft, and a little dramatic in the best way. When you lift it up, it stretches into wispy ribbons, then melts back down like it forgot it had bones. That is the whole goal.

This version keeps ingredients accessible and the instructions super clear, because cloud slime can go from “wow” to “why is this glue soup” fast if you rush. We will build the base first, then add the “cloud” part slowly so you can stop at the exact texture you want.

Heads up: This is a craft recipe, not food. Adult supervision is a good idea, especially around activator.

Glue, shaving cream, contact lens solution, baking soda, and instant snow laid out on a clean kitchen counter in natural light

Why It Works

  • Drizzly texture on purpose: We use instant snow a little at a time so you land on fluffy and stretchy, not crumbly.
  • Low drama mixing: You activate the slime base first, then fold in snow. That order makes the texture way more predictable.
  • Fixable at every stage: Too sticky, too stiff, too wet, too rippy, we have quick saves that do not require starting over.

Pairs Well With

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Storage Tips

Cloud slime dries out if you leave it exposed, so storage is the whole game.

  • Container: Store in an airtight container (a deli container or plastic tub with a tight lid). Press the slime down gently so there is less trapped air.
  • Short term: 3 to 7 days is the sweet spot for best texture.
  • Longer storage: It can last up to 2 to 3 weeks if kept sealed and clean, but it may slowly lose its drizzle. If it starts to dry, knead in a tiny dab of lotion or a few drops of warm water.
  • If it gets wet or melts: That usually means too much moisture or not enough activation. Mix in a pinch more instant snow (dry) and add activator drop by drop.
  • Hygiene note: Wash hands first, keep it off carpet and fabric, and toss it if it grows mold or smells off.

Common Questions

What is cloud slime made of?

Cloud slime is basically regular slime plus instant snow (the stuff that expands with water). The snow gives it that fluffy, airy pull and the drizzle effect.

Can I make cloud slime without borax?

Yes, you can make it without borax powder or mixing a separate borax-water solution. This recipe uses contact lens solution + baking soda as the activator. For it to work, the solution usually needs boric acid and/or sodium borate listed on the label (those are borate compounds). If you want a one-bottle option, liquid laundry starch can also work as an activator, depending on brand.

Why is my cloud slime sticky?

Most of the time it needs more activator. Add contact solution a few drops at a time, knead, then reassess. Sticky can also happen if your instant snow is too wet, in which case add a pinch of dry instant snow and knead.

Why did my cloud slime turn stiff or rippy?

Too much activator. Fix it by kneading in a small pump of lotion or a few drops of warm water. Go slow. Too much lotion can make it slippery, so add a tiny amount and stop when it stretches again.

How do I get the drizzle effect?

Two tricks: make sure the slime is soft (not over-activated), and let it rest 10 to 15 minutes in the container after mixing. Then pull it up high and let it fall back into itself.

Is cloud slime safe for kids?

With supervision, yes for most kids. It is not edible and should be kept away from mouths and eyes. Borate-based activators (including many contact lens solutions) can bother sensitive skin, so consider gloves and wash hands after play. Discontinue use if irritation happens.

Does glue brand or weather matter?

Yes. White PVA school glue (Elmer’s-style, usually labeled washable) is the most predictable. Humidity, shaving cream formulas, and contact solution formulas can all change how much activator you need, so go slowly and follow the texture cues.

Can I add glitter or foam beads?

Yes. Add extras after you like the final texture. Some add-ins can cause fallout or make slime feel stiffer, so start small and mix them in gently.

The first time I tried to make cloud slime, I went in with full chef confidence and absolutely no patience. I dumped the instant snow in like it was flour in a weeknight sauce, then wondered why I had a crumbly, squeaky stress ball instead of a fluffy cloud. Lesson learned. Cloud slime is a “taste as you go” situation, except the tasting is you poking it and going, “Okay, you are almost there.” Now I add snow in small handfuls, and the drizzle payoff feels like magic every time.