Updated slime tip……. I’ve found THE easiest slime to make of ALL the slimes!!!

1 stick of Blu Tack + 2/3 pumps of hand soap = STRETCHY SLIME!!

No borax, no measuring, no mess, no fail slime!

But if you’re after the messy gooey super fun to make slime….keep reading.

My daughter is SLIME OBSESSED! Not a weekend goes by where I haven’t tried, or at least been asked (4 thousand times) to make slime. We’ve YouTube-d and tried all sorts of combinations of toothpaste, shaving cream, borax, flour, dishwashing liquid, white glue, clear glue and ENDLESS tubes of glitter. Some of them KINDA worked…….most of them DID NOT work.

THEN we went to a brilliant school holiday slime workshop with First Senses and we’ve GOT IT! A non borax slime recipe that’s easy peasy and actually works, I would almost go so far as to say it’s fail safe. Now go forth and slime!

**UPDATE** Since I posted this we’ve really upped our slime game and started making Fluffy Slime. Just as easy just needs a few extra ingredients. CLICK HERE for our Fluffy Slime Recipe.

Basic slime ingredients

What you’ll need

  • Contact lens solution or saline solution. Get it cheap as you can find it BUT IT MUST contain BORIC ACID. Check the ingredients list because if it doesn’t have this it won’t work
  • Glue. Experiment with this. We’ve tried pva school glue, glitter glue, coloured glue there’s lots of different types of glue out there now that will work. I normally just buy what’s on special
  • Bicarb (1 teaspoon per slime ball)
  • Bowl or container for mixing. We use cheap plastic containers that can be used for mixing, and then storing.
  • Glitter, foam beads, sequins, essential oil and other bits to experiment with. Not essential, but just cool to try different add ins when you get your slime base perfected.

And a good tip to remember……vinegar dissolves slime.

How to make it

Slime making – Step 1

Pour all of your glue into the plastic bowl

Slime making – Step 2

Pop in one teaspoon of bicarb and mix until any lumps are dissolved.

At this stage we normally add in our add ins (if you want to) glitter, foam beads, shaving cream, essential oil etc. If you want to experiment, this is the point to do it

Slime making – Step 3

Now you need to add your saline/contact lens solution. Start with a good squirt (I’d say 2ish tablespoons, but no need to measure) and then stir like crazy. You’ll notice straight away that it starts to polymerize* which is very cool.

Slime making – Step 4

Keep stirring like there’s no tomorrow. Get those biceps working and really stir it. Try and get as much of the saline/contact solution combined with the glue as possible. Keep stiring, keep stiring!If your mixture is still sticky, add a squirt more solution and stir. Repeat until you get to the point you can lift your slime ball out of the container and now it’s time to squeeze, squelch and squish your slime in your hands until it’s not sticky anymore.

Slime making – Step 5

If you need to you can keep adding saline/contact solution (little bit at a time) until you can stretch your slime without it sticking to your hands.

Slime making – Step 6

Go crazy! Your slime is complete!

Store in an air tight container

Make sure you read and obey the slime rules below….(my daughter is still perfecting this step unfortunately.)

What did we learn?

The two main concepts for slime science are polymers and Non-Newtonian Fluids. The white glue in our slime is a polymer, a large chain of molecules that allows it to be poured. When we add the borax it changes the structure of the chain making the polymer thicker turning it into our awesome slime!

A Non-Newtonian Fluid is neither a true liquid or a true solid. You can pick it up like a solid. However, it will begin to flow like a liquid and will also take the shape of the container.

Here is an easy to understand pdf about the Science of Slime

The Rules of Slime (as I told my daughter)

  • Slime is for outside, it’s messy and sticky but also lots of fun for OUTSIDE play!
  • It’s for “big kids” only to play with, which for us means you have to be over 4. These ingredients are safe to touch but NEVER to be eaten, so don’t leave slime around kids who are likely to put it in their mouth.
  • When you’ve finished playing with it store it in an air tight container. We use glass jars but a sambo bag would also work.
  • Always wash your hands when you’ve finished playing
  • polymerization is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks.