The Verdict

13 Pack Unicorn Dual Color Butter Slime Kit Review: Is It Worth Your Money?

Let’s be real — most slime kits on Amazon are either overpriced tiny tubs or sticky messes that ruin your table. This 13-pack from the Unicorn Dual Color line tries to hit a sweet spot: enough variety for a party, soft enough texture to actually play with, and a price that won’t make you wince. With a 4.4-star average from 220 ratings, it’s clearly landing well with most buyers. But “most” isn’t “all,” and I’ve dug into the specifics so you know exactly what you’re getting before you click.

What’s Actually in the Box

You get 13 individual containers, each holding about 3.5 ounces of butter slime. That’s a solid amount — not those tiny 1-ounce samples you see in other multi-packs. Each tub has a dual-color swirl (think pastel pink/purple, blue/green combinations) already mixed in, so you don’t have to blend colors yourself. The packaging is simple: clear plastic tubs with screw-on lids, no fancy boxes or tools included. You get the slime, and that’s it. For the price per container, that’s fine — just don’t expect accessories like charms or beads unless you buy them separately.

How It Actually Performs

The butter slime base is the star here. It’s soft, spreadable, and has that clay-like butter texture that holds its shape when you mold it but doesn’t stick to your hands like standard clear slime. I tested a few tubs directly — the pink one and the green one — and both had good stretch without tearing. It doesn’t leave residue on your fingers after playing, which is a huge win for parents. The “non-stick” claim in the title holds up for most users, though a few reviewers noted it can get tacky if you play with it for more than 10-15 minutes straight. That’s normal for butter slime, but worth knowing.

The dual-color effect is subtle — it’s a swirl, not a crazy neon mix. If you’re expecting vibrant, Instagram-worthy layers, you’ll be slightly underwhelmed. It’s more like a soft marbled look, which honestly looks nicer in person than on the product image.

What Buyers Consistently Praise

The most repeated compliment in the 220 ratings is the texture. One parent wrote: “My daughter has tried dozens of slimes and this is the first one that didn’t end up stuck in her hair or on the couch.” Another reviewer mentioned: “The 13 tubs lasted our entire classroom party — every kid got one and no one fought over colors.” The value per unit is a big selling point, especially for teachers or parents planning party favors.

Where It Falls Short

Honestly, the downsides are minor but real. First, the scent — it’s not perfumed, but there’s a faint chemical smell when you open a fresh tub. It dissipates after a minute, but if your kid is sensitive to smells, air it out first. Second, a few recent buyers reported some tubs arriving underfilled — not empty, just noticeably less than others. That’s a quality control issue, not a dealbreaker, but check your shipment when it arrives. Third, the lids aren’t airtight. If you leave tubs open overnight, the slime will dry out. Store them sealed and they’ll last weeks.

Who Should Buy This

This kit is ideal for parents of kids aged 5-10 who want a bulk option for playdates, birthday parties, or classroom activities. The individual containers mean no sharing germs or color mixing disputes. It’s also a good pick for slime beginners — adults who want to test butter slime without committing to a single large tub. Skip it if you want strong scents, added charms, or a single giant container for deep play sessions.

FAQ: Three Questions Shoppers Actually Ask

Is this slime safe for toddlers?
It’s marketed for kids 3+, but I’d say 5+ is safer. Butter slime can be a choking hazard if small pieces are pulled off and eaten. Supervise younger kids.

Will it stain clothes or furniture?
No — the butter base doesn’t leave oily residues. It’s water-based, so a wet cloth cleans up any stray bits. Just avoid letting it sit on fabric for hours.

How long does it stay fresh if unopened?
Sealed, these last months. Once opened, keep the lid tight and it’ll stay soft for 2-3 weeks. Add a drop of water if it starts to stiffen.

The Verdict

Buy it if you need a budget-friendly, group-ready slime kit with genuinely soft, non-sticky texture and enough variety to keep kids entertained. The minor scent and occasional underfilled tub are tradeoffs you can live with at this price.

Skip it if you want premium scents, decorative add-ins, or a single massive tub for one kid’s deep play sessions.

Rating: 4.2/5 — It does what it promises, and for the price, that’s a solid deal. Check your shipment when it arrives, and you’ll be happy.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.