--- product_id: 80300280 title: "Slime Activator 16oz - Easy-to-Use, Washable, Stretchy Borax Solution - Works with All Glue Types, Elmer's, White, Clear & Craft Kits" brand: "ultimate science" price: "214 Lei" currency: RON in_stock: true reviews_count: 8 category: "Ultimate Science" url: https://www.desertcart.ro/products/80300280-slime-activator-16oz-easy-to-use-washable-stretchy-borax-solution store_origin: RO region: Romania --- # 16oz easy-squirt bottle 4% Borax pre-mixed solution Made in USA, safe & nontoxic Slime Activator 16oz - Easy-to-Use, Washable, Stretchy Borax Solution - Works with All Glue Types, Elmer's, White, Clear & Craft Kits **Brand:** ultimate science **Price:** 214 Lei **Availability:** ✅ In Stock ## Summary > 🧬 Unlock the science of slime—perfect stretch, every squeeze! ## Quick Answers - **What is this?** Slime Activator 16oz - Easy-to-Use, Washable, Stretchy Borax Solution - Works with All Glue Types, Elmer's, White, Clear & Craft Kits by ultimate science - **How much does it cost?** 214 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/80300280-slime-activator-16oz-easy-to-use-washable-stretchy-borax-solution) ## Best For - ultimate science enthusiasts ## Why This Product - Trusted ultimate science brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **STEM Learning Made Fun:** Transforms ordinary glue into stretchy slime, turning playtime into hands-on polymer chemistry lessons. - • **Safe & Trusted Quality:** Crafted in the USA with nontoxic, washable ingredients, ensuring peace of mind for parents and endless fun for kids. - • **Versatile Compatibility:** Works seamlessly with all glue types—Elmer’s white, clear, glitter, and craft kits—for endless creative possibilities. - • **Consistent Slime Every Time:** Pre-mixed 4% borax formula eliminates guesswork for perfect slime results—no more rubbery or watery fails. - • **Customizable Texture Control:** 16oz squirt bottle allows precise drop-by-drop activator addition for gooey, fluffy, or cloud-like slime textures. ## Overview Ultimate Science Borax Slime Activator is a ready-to-use 4% borax solution designed for flawless slime making with any glue type. Made in the USA, this 16oz activator bottle offers precise control for custom slime textures while providing a safe, washable, and educational STEM experience that turns kids into polymer scientists with every batch. ## Description Ultimate Science Borax Slime Activator is the perfect solution to get kids experiment with slime! The Borax solution is 4% borax (also know as sodium borate, sodium tetraborate, or disodium tetraborate) and 96% water. We take the guess work of mixing borax powder and water and our activator makes the perfect formula to make your slime stretchy but not rubbery! Borax links strands of PVA polymer (ingredients you find in the glue you are using) together. While doing this, water is trapped and held, and a new chain of polymers is created. Slime is a super fun way to learn about the science of polymers. There are many different kinds of polymers. They are made differently and have different textures & properties. Wood, starch, rubber, cotton, wool, hair, spiders’ webs, silk, leather, muscles and fingernails are all examples of polymers that are made in nature. Man-made polymers, or synthetic polymers, are materials such as polyester, polystyrene, polyethylene, teflon, nylon and polyvinyl alcohol. Fibers in clothing, shoe soles,rubber tires and plastic food containers are all polymers. Poly means many. Mer is a short for “Monomer” and means one part. Polymer means many parts. Polymers are many molecules (two or more atoms stuck together) that are joined together like long chains. Think of one molecule as a paper clip, and the polymer as a chain you make attaching paper clips to each other. If you pick up one paper clip in the chain, the whole chain comes up! All things, or substances, are made of matter. You probably learned at school the normal states of matter: solid, liquid and gas. The gel slime you make is a substance that acts like something between a solid and a liquid. Use our perfect magical formula of slime activator to make your own slime like youtube starts and instagram famous slimers! Our Borax solution is also available in every slime kit by Ultimate Science, a Baby Mushroom Brand. Review: Making slime easy. - We used this with the desertcartBasics School Glue and some food coloring and got great results. It isn't perfect, but almost as good as the best slime we've bought retail, and the kids love the process. The instructions say add a few drops at a time so we did, but it took a decent amount to get it looking anything like slime. We used a 1/2 cup of glue and ended up having to put at least a couple of good squirts in to get anything to really happen. I thought we had bought a dud, but it really came out great. My son has been playing with it for a few hours and it was perfect the next morning after storing in a ziploc bag. This container will make a TON of slime. I think it will easily outlast the gallon of glue we bought. Great purchase. An actual ratio of activator to glue would have been nice, but not too hard to figure out. I'll try to come up with that ratio or at least a starting point and update this review. Review: Amazing slime!! - This is the best activator we have tried. Such a great product!! Great value for the money and great quality!! Will definitely buy it again and again!! ## Features - No More Failed Slime Experiments: This ready-to-use borax slime activator eliminates the guesswork and frustration of measuring powder and water yourself—no more rubbery disasters or watery messes that disappoint your kids. Our pre-mixed 4% borax solution results in perfect slime making every single time, so your children can jump straight into successful slime fun without the trial-and-error heartbreak that wastes time and slime supplies. - Turns Playtime Into Real Science Learning: This slime activator transforms simple glue into stretchy, satisfying slime through polymer chemistry—giving kids a hands-on lesson in how molecules link together. While they're having a blast making cloud slime or fluffy slime with any Elmers slime kit or glue you already have, they're actually learning the same chemistry concepts taught in middle school science class, turning every slime making session into an educational STEM experience. - Made in the USA for Your Peace of Mind: Crafted in a safe US manufacturing facility using the highest quality ingredients, this slime activator gives you confidence that your children are using slime supplies you can trust. Unlike imported alternatives, our American-made formula is washable, safe, and nontoxic—so kids can get messy creating their perfect slime kit creations without you worrying about safety or cleanup, backed by Ultimate Science & Baby Mushroom's 10+ years serving 100,000+ families. - Superior Slime Consistency Every Time: Our professionally formulated activator for slime creates perfectly stretchy, never rubbery slime that outperforms contact solution for slime or laundry detergent alternatives. This pre-mixed borax solution delivers the ideal polymer chain reaction with any glue for slime—whether Elmers glue slime, PVA, white, clear, or glitter glue—guaranteeing satisfying, successful slime making results that keep kids engaged and excited about their creations. - Perfect Drop-by-Drop Control for Custom Textures: The convenient 16oz squirt bottle makes it super easy for kids to control their slime consistency—just add a drop at a time of this slime activator until you achieve your desired texture, whether gooey, stretchy, fluffy, or cloud-like. This hands-on experimentation teaches observation skills while giving young scientists the power to customize their slime ingredients and create exactly the slime they envision, making every session a success. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07G4FL83P | | ASIN | B07G4FL83P | | Best Sellers Rank | #30,010 in Toys & Games ( See Top 100 in Toys & Games ) #232 in Slime & Putty Toys | | Brand Name | Ultimate Science | | Customer Reviews | 4.3 4.3 out of 5 stars (590) | | Date First Available | August 2, 2018 | | Formulation Type | Regular | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Weight | 16 Ounces | | Item model number | 712038978564 | | Liquid Volume | 16 Fluid Ounces | | Manufacturer | Universe of Science | | Manufacturer | Universe of Science | | Manufacturer recommended age | 8 years and up | | Material Features | Complies with US safety standards | | Material Type Free | Other Materials Free | | Model Number | 712038978564 | | Number of Items | 1 | | Package Dimensions | 7.24 x 2.6 x 2.52 inches; 1 Pounds | | Part Number | 712038978564 | | Product Benefits | Superior slime making performance | | Scent | Unscented | | Skin Type | All | | Specific Uses For Product | Slime Making | | UPC | 712038978564 | | Unit Count | 16 Ounce | ## Product Details - **Brand:** Ultimate Science - **Item Form:** Liquid - **Material Type Free:** Other Materials Free - **Scent:** Unscented - **Unit Count:** 16 Ounce ## Images ![Slime Activator 16oz - Easy-to-Use, Washable, Stretchy Borax Solution - Works with All Glue Types, Elmer's, White, Clear & Craft Kits - Image 1](https://m.media-amazon.com/images/I/71-D83MZaqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Making slime easy. *by B***E on July 17, 2019* We used this with the AmazonBasics School Glue and some food coloring and got great results. It isn't perfect, but almost as good as the best slime we've bought retail, and the kids love the process. The instructions say add a few drops at a time so we did, but it took a decent amount to get it looking anything like slime. We used a 1/2 cup of glue and ended up having to put at least a couple of good squirts in to get anything to really happen. I thought we had bought a dud, but it really came out great. My son has been playing with it for a few hours and it was perfect the next morning after storing in a ziploc bag. This container will make a TON of slime. I think it will easily outlast the gallon of glue we bought. Great purchase. An actual ratio of activator to glue would have been nice, but not too hard to figure out. I'll try to come up with that ratio or at least a starting point and update this review. ### ⭐⭐⭐⭐⭐ Amazing slime!! *by R***H on December 2, 2024* This is the best activator we have tried. Such a great product!! Great value for the money and great quality!! Will definitely buy it again and again!! ### ⭐⭐⭐⭐⭐ Best activator on the market! *by A***H on November 5, 2024* Excellent product for the price. Great quality. My kids loved it! Made the best slime. Will be buying more. ## Frequently Bought Together - Ultimate Science Borax Slime Activator - 16oz Solution - Made in USA - Works with All Glue Types - Better Than Contact Solution or Laundry Detergent - Amazon Basics All Purpose Washable School Clear Liquid Glue - Great for Making Slime, 1 Gallon - Amazon Basics All Purpose Washable School Craft Liquid Glue for Making Slime, 1 Gallon, White, Single Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ro/products/80300280-slime-activator-16oz-easy-to-use-washable-stretchy-borax-solution](https://www.desertcart.ro/products/80300280-slime-activator-16oz-easy-to-use-washable-stretchy-borax-solution) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-05-04*