How To Fix Hard Slime & Make Overactivated Slime Jiggly Again!

No more slime fails! How to fix hard slime in minutes with one simple ingredient. 

No more slime fails! How to fix hard slime in minutes with one simple ingredient. 

How to Fix Slime – Fast!

You’ve found a new slime recipe.

You bought all the ingredients.

You’re super excited…

…then it happens…

SLIME FAIL!!

Don’t worry, slime fails happen to all of us! However, even if your slime didn’t turn out the way you expected, you can fix it a lot easier than you might think.

Can I Fix Overactivated Slime?

One of the most common slime fails is overactivated slime. The term “over activated” means that you’ve added too much of a slime activator (liquid starch, contact solution, borax, etc.). This results in a slime that is hard, rubbery, stringy, and breaks easily.

This post will show you exactly how to fix hard slime (aka. over-activated slime) in minutes. The best part is that you don’t need any special products to do it! Just one simple ingredient that everyone has at home!

This cool trick will make any hard, rubbery slime good as new again!

How to fix hard slime in minutes with one simple ingredient. This trick can be used to fix overactivated slime, borax slime, rubberly slime and more!

How to Fix Hard Slime (Video Tutorial)

Watch the video below to see both how to make our classic liquid starch slime, as well as how to fix overactivated slime. Photo step-by-step directions follow.

Click video below to play:

FREE PRINTABLE SLIME JOURNALComplete and submit the form on the right to get your printable slime journal page for kids. Save and print for each new slime recipe your kids try! Plus we’ll send you more slime recipes and kids activities right to your inbox weekly! Featured Image SubscribeNo worries. I'll never spam you! BirdSend Email Marketing Tool

How to Fix Overactivated Slime (Photo Step-by-Step Instructions)

Add your stringy slime or overactivated slime to a large mixing bowl.

Overactivated slime in a mixing bowl, stringy and broken into pieces

Fill a measuring cup with warm water. Water from the sink is fine – the water should be warm, but safe to touch (not hot or boiling!)

Pouring warm water into mixing bowl with overactivated slime

Add warm water to mixing bowl with overactivated slime. Begin to massage the slime, working the warm water into it.

Can you fix overactivated slime? Yes! with one easy ingredient!

Add more water as needed, until your hard or broken slime begins to soften and reform a cohesive ball. It may take a few minutes – but be patient – this is how to make overactivated slime into jiggly slime!

No more slime fails! How to fix hard slime in minutes with one simple ingredient. 

After just a few minutes and some warm water, your slime will be good as new! Voila!

Related: Click here for our ultimate list of slime supplies!

No more slime fails! How to fix hard slime in minutes with one simple ingredient. 

Why this method works: Making slime involves a chemical reaction that heats the slime (even if doesn’t feel hot to the touch). As slime cools down, it can become less stretchy, so warming it back up can be a quick fix. However, the best way to avoid slime that is too hard is to take care not to add more liquid starch than needed during the mixing process.

Learn How to Make Slime Like a Pro

One of the best ways to avoid slime fails is to learn to master the basic slime recipes: liquid starch slime, cornstarch slime, and contact solution slime.

Once you have these three easy ways to make slime down pat, you can move on to making exciting new slime concoctions!

Click here to learn how to make slime using our three starter recipes!

how to make slime

Love Slime as Much as We Do??

Get 100 pages of slime recipes in our BRAND NEW updated edition of The Slime Book!

Available in both print and digital versions!

The Slime Book - 43 recipes for unique slimes

From seasonal & holiday slime, to glow-in-the-dark slime, there’s 43 recipes for hours of play! Many of them are brand new and never published!

CLICK HERE to grab your copy of The Slime Book today!

  • Author
  • Recent Posts
Stacey aka the Soccer Mom Stacey aka the Soccer MomStacey is the creator of The Soccer Mom Blog, a Houston Texas mom blog that focuses on positive living for women and families. She loves to share real food recipes, money-saving tips, parenting encouragement, kids activities, DIY tutorials, home hacks, fitness, and so much more! To get to know Stacey even better, click here. Stacey aka the Soccer Mom Latest posts by Stacey aka the Soccer Mom (see all)
  • Red Velvet Layer Cake - February 5, 2026
  • Buffalo Chicken Dip (5 Ingredients) - January 29, 2026
  • 40 Valentine’s Day Dessert Ideas - January 22, 2026

Share this post:

311 shares
  • Share2
  • Tweet
  • Pin309
  • Email

FREE PRINTABLE SLIME JOURNALComplete and submit the form on the right to get your printable slime journal page for kids. Save and print for each new slime recipe your kids try! Plus we’ll send you more slime recipes and kids activities right to your inbox weekly! Featured Image SubscribeNo worries. I'll never spam you! BirdSend Email Marketing Tool

Tag » How To Fix Hard Slime