Will Slime Dry Out?

Last updated on September 14th, 2022 at 08:25 pm

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Last updated on September 14th, 2022 at 08:25 pm

Invented in 1976 by Mattel Toys, slime has been a popular kids toy ever since. This gooey, sticky, stretchable substance defies all odds as it runs through your fingers like a liquid and yet when you squeeze it, it clumps together like a solid. 

Mattel Toys wanted the slimy toy to be as gross as possible and so the first was colored light green and came in a little green trash can. Ewwww! But kids loved it and other toy companies started jumping on the bandwagon to create their own “slime”.

One problem that people wonder about when it comes to slime is whether it will dry out or not. 

Unfortunately slime will harden and dry out if you do not store it properly. So make sure to always put away the slime when you or your kids are done with it. 

Gooey slime is called a Non-Newtonian fluid meaning it is neither a solid or liquid since its ability to flow is not constant and only solidifies when stress is applied to it. 

So, slime can change its consistency depending upon how much pressure is put on it. Pretty cool, right? 

There are of course some other toys that are the same type of substance – Play-doh and Silly Putty. And for some reason the squishiness is absolutely mesmerizing.

If left out, slime will harden. But don’t worry! If slime was accidentally left out there are ways you can reverse it back to its former gooey glory.

How Do You Keep Slime From Drying Out? (And How To Make It Soft Again) 

You just purchased a new can of slime or maybe you made it yourself and you are wondering how to keep it from drying out. Well, it’s pretty simple.

To keep slime from drying out, keep it in an airtight container. This will help it last quite a while as well as keep it clean. 

If you don’t have an airtight storage container, you can also use Ziploc baggies to keep your slime..well, slimy! If you don’t have either of these things then wrapping the top of the container you placed the slime into with plastic wrap will work too. 

You can place it in the fridge or keep it at room temperature.

The slime will tend to get hard after a week or so. But, don’t toss it right away! There are ways you can soften the slime, bringing it back to being as sticky as ever. 

Some things that should do the trick are:

  • Antibacterial gel
  • Warm/hot water
  • Slime activator (for the cases when you have too much water)
  • Lotion
  • Microwaving

To keep your slime in good condition make sure to avoid setting it down on dirty surfaces or handling it with dirty hands. By washing your hands before you touch it and keeping a clean play space you will help the slime last longer.

How Long Can Slime Last? 

Now if you’re wondering how long the slime will actually last, we are too! The stuff can’t last forever right? And how do you know when it’s a good idea to just go ahead and toss it?

Slime can last for weeks up to months with proper storage but anything longer than that and your slime should be disposed of. 

If you are storing your slime in an airtight container or Ziploc bags like we recommend earlier then you are off to a great start! By doing this, your slime will last for weeks to months. 

You can place it in the refrigerator or even just keep it at room temperature depending on how you prefer to play with it and if you want it more solid or liquid. 

If you see that the slime is developing mold it’s time to chuck it. If it dries out too much it is probably a good idea to throw it away too. 

You can try using the methods for softening it that we mentioned earlier but it may be past the point of no return so it’s ok to get rid of it and replace it with new slime! 

If you want to get really crazy, there are ways you can make your own slime at home.

How Do You Make Homemade Slime? 

The feeling of the gooey pink slime in your hands is actually quite pleasant. It’s somehow almost calming to let the goo slide around your fingers. When you let it rest in your palms it feels like a liquid and when you squish it together it feels a stretchable solid. 

There’s nothing quite like it! How can you create this fun toy yourself?

Making homemade slime is easy and fun! It only takes a few ingredients to make gooey slime.

To make your own slime you will just need some glue, food coloring, saline solution, and baking soda. Combine those four ingredients and you have slime! 

Store bought slime is made primarily with borax and water. Borax may cause health issues such as burns so when you want a better option make your own!

The ingredients to make slime:

  • 8 ounce bottle of Elmer’s white school glue
  • 1 ½ -2 tablespoons of contact saline solution, add more as needed
  • 1 tablespoon of baking soda
  • Any color of food coloring you wish (optional)

How to make slime at home

  • Add glue and food coloring to a bowl and stir until combined
  • Mix in baking soda
  • Mix in saline solution. If too sticky add ½ tablespoons at a time until you reach desired consistency. The more you add the thicker it will be and the less you add the slimier it will be.
  • Knead the slime with your hands until it  holds together. It’s going to be wet and gooey at first but as you knead it it will come together.
  • Then store the slime as we mentioned earlier. It is said that it is best to play with slime on a place mat as well to keep it as clean as possible. 

And there you go! Simple and easy homemade slime. 

Kids will love making their own. You can even add in glitter or come up with whatever kind of slime you like. Some more slimes you can make are fluffy slime, glitter slime, and even sand slime. The website I Heart Naptime has some great slime recipes to give you tons of variety with your slime making! 


Slime is guaranteed to bring a smile to your face. Even if it dries out, there are ways you can soften it to make it back into the slimy goodness that it should be. 

It’s gooey and stretchy and so much fun. 

Kids love playing with slime and it’s something that they can make themselves (with a little bit of help of course). Making slime with your kids and letting them choose colors or consistency is a great way to spend time together while having loads of fun. 

Last updated on September 14th, 2022 at 08:25 pm

Matthew R

Hi, My name is Matt and I am all about toys! When trying to find accurate information online about toys I was finding it difficult so I decided to make this site.

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