Slime Activator 16oz - Easy-to-Use, Washable, Stretchy Borax Solution - Works with All Glue Types, Elmer's, White, Clear & Craft Kits

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.

• 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.