Help! How do I fix my slime? If you are wondering how to fix slime, you’ve come to the right place. How do you fix slime that is too runny? How do you make slime less sticky?  How do you fix a hard slime? How to make slime less watery? Homemade slime making is a lot like baking cookies in that it’s a recipe and sometimes recipes don’t come out as you planned.

HOW TO FIX SLIME: SLIME TROUBLESHOOTING GUIDE

The ultimate how to fix slime guide for basic homemade slime recipes. How do I fix slime is the number one question I get these days. Check out our slime help guide for troubleshooting each of our 4 basic slime recipes plus some common reader questions. Also find out if you can add lotion to slime to fix it or use warm water to fix slime. How do you fix slime?

How do you fix a not so great chocolate chip cookie when it’s already baked?  You can put frosting on it, but you can’t actually change the not so great cookie. You can only make it even better next time!  So read on to find out the basic slime recipes we always recommend and tips for how to avoid slime fails.

HOW DO I FIX MY SLIME?

To learn how to fix slime, you need to start by finding really good slime recipes you don’t have to fix! You need an awesome homemade slime recipe in order to have a good batch! Likewise, make awesome cookies, your cookie recipe has to be amazing too! However, there are always variables that go along with either recipe, slime or cookies! No two batches are always alike.

Slime making, just like baking, is a science. It’s chemistry! When you combine your slime ingredients and mix them together, you are creating a new substance that you can’t undo. A chemical change has taken place. The best thing is to get it right from the start, and even then, practice makes perfect. Read SLIME SCIENCE here.

Here are the biggest reasons people ask me how to fix slime because they are having slime failures! Below we will dig a little deeper and talk about each of our basic slime recipes we use for all our themes. Plus we will talk a little bit about stretchy slime versus sticky slime!

Get our basic slime recipes in an easy to print format so you can knock out the activities!

—>>>  FREE SLIME RECIPE CARDS

HOW TO AVOID SLIME FAILS

1. READ THE RECIPE FIRST

To learn how to make slime, it’s really important to read through your recipe first. I have actually gotten comments that have said I should have read through the recipe first! Look for notes and tips specific to that type of recipe. Check the measurements and read about the supplies used. Our 5 BASIC SLIME RECIPES come with step by step pictures, directions, supplies, and even videos.  See below for our best tips to avoid slime fails for each slime recipe.

We have the best slime recipes:

2. START WITH THE RIGHT SLIME INGREDIENTS

Understanding the basic SLIME ACTIVATORS is key to making great slime. Commonly used slime activators are a saline solution (not necessarily contact solution), liquid starch, and borax powder. It’s these slime activators that when mixed with the PVA glue react to form slime.

Additionally, the right glue is key too! You need a Washable PVA School Glue (polyvinyl-acetate).  Not all glue is the same! Look for the big gallons to really save some money! The science behind the slime goes into more detail.

CLEAR GLUE VS WHITE GLUE

The majority of the issues with making slime seem to arise with clear glue. I am not a chemist, but there’s a notable difference between white and clear glue.  Clear glue is less stretchy over time and more prone to breaking.

Both make a fun slime but I do try to gear my recipes towards using clear glue. White glue will simply be slimier while clear glue will be just right.  The point of this is that you may need a bit less activator with clear glue and the same or even just a little bit more activator with white glue.

We list all our recommended slime supplies here including brands.

3.  MEASURE YOUR SLIME INGREDIENTS ACCURATELY

Just like baking, eyeballing doesn’t always work so well especially if you are after a specific desired outcome.  In this case, stretchy non sticky slime.  Make sure to grab those measuring cups before you get started!

4. KNEAD YOUR SLIME WELL

Lastly, you have to knead your slime well (especially the saline solution slime). Instead of adding more activator if your slime seems too sticky, make sure you have taken some time to knead the slime first. You can even let it rest a few minutes and then knead again! I will talk more about this below.

Also, keep in mind that slime gets colder as the reaction finalizes. This is an endothermic reaction. A cold slime is more likely to snap or break like a cold rubber band will. This is called shear stress. Warm your slime in your hands and stretch gently, don’t just pull quickly!

SLIME IS A SCIENCE EXPERIMENT

Remember your homemade slime is all about science and fun, and it can behave much differently than factory-produced slime that also has lots of added ingredients. Also, keep in mind the cool photos you see on the internet are probably captured at just the right moment! Enjoy making slime for the process and the experience as much as the outcome.

TIPS FOR MAKING NO FAIL SLIME

Below you can read through each of our basic slime recipes. I do consider fluffy slime to be a basic recipe but it also uses the saline solution slime recipe as a base. As long as you are adding foam shaving cream, you can read through the tips for saline slime for troubleshooting.

No more having to print out a WHOLE blog post for just one recipe!

Get our basic slime recipes in an easy to print format so you can knock out the activities!

—>>>  FREE SLIME RECIPE CARDS

SALINE SOLUTION SLIME RECIPE

Saline solution slime is one of the most popular slimes right now! Your saline solution needs to contain boric acid and sodium borate. These are the main ingredients that form the slime. They are borate ions just like borax powder. This is why you can not make saline at home for making slime!

  • I don’t recommend using more than 1 tbsp of saline solution initially. You can always add more but you cannot take away! You can also use as little as 1/2 tbsp, but the slime will be stickier!
  • Also, make sure to give your slime a good mix after adding the solution. It does not come together immediately, but it will! Look for it to pull away from the sides of the bowl.
  • Note, if you are using a saline solution or eye drops that only contain boric acid, you may need to double the amount!

HOW TO THICKEN SLIME

Slime too runny? Want to know how to make slime less runny without borax? Well, a small amount of baking soda is used in our saline solution recipe to thicken the slime in addition to the slime activator, saline solution. You can use as minimal amount as 1/4 tsp with clear glue and 1/2 tsp with white glue. Or you could see what happens when you make saline solution slime without baking soda for a fun slime experiment.

HOW TO MAKE SLIME LESS STICKY

If your slime seems too sticky, you have a few choices. You can knead your slime longer.  The chemical reaction is still taking place! Kneading the slime allows the reaction to fully take place.

Your slime still feels sticky?  Then add a drop or two at a time of saline solution. You can even squirt a few drops on your hands before kneading the slime. Doing this will add just a tiny bit more activator to your slime and it will coat your hands for handling the slime.  Remember though, if you just start adding more and more activator, your slime will become rubbery and breakable.

BORAX POWDER SLIME RECIPE

For our borax slime recipe. the best ratio of borax powder to warm water is 1/4 tsp of powder to 1/2 cup of warm water. This makes for a stretchy, oozey slime that’s not too sticky in both white and clear glue. You need to mix this slime well once you pour in the borax solution. There really shouldn’t be any solution left in the bowl after mixing.

  • If you are adding more borax powder then we do, you will find liquid left over and you will have a stiffer slime that’s more putty like. Not a problem but also not very stretchy.  Varying the amount of borax powder also makes for a good slime science experiment!
  • Warm water will help the borax powder dissolve better and make a more saturated solution so that you don’t see powder still floating around. Encourage kids to mix the borax and warm water for 30 seconds if you can!
  • Knead your slime in the bowl if you like. You can even let it chill for a few minutes and then knead it a bit. Borax slime does not need the amount of kneading that the saline solution slime does.

IS BORAX POWDER SAFE?

Concerned about the safety of using borax powder, since it’s banned in several countries and schools don’t always allow it. Now again I am not a chemist, but Steve Spangler has a good FB live video where he discusses what’s going on with the bad rep that borax gets. Find that video here if you want to learn a little more.

I also want to point out that it’s borate ions that form slime. Both liquid starch (which you will read about below) and saline solution (above) also contain borate ions. These three popular slime ingredients all contain a form of boron.

To be as accurate as possible, slime may be borax powder-free but not necessarily borax free. It just depends on how you feel. If you have skin sensitivities, you may want to avoid borax powder slime. However, we use a low ratio of powder to water.

LIQUID STARCH SLIME RECIPE

This was the first-ever basic slime recipe that we really enjoyed making, and it’s really a very simple recipe with little room for error.

What do I run across from readers regarding liquid starch slime? Usually, they can’t find liquid starch or they live in a country where liquid starch is not available.

It’s also important to know that you can not make your own liquid starch. Liquid starch is not a slurry of cornstarch. You also can not use spray starch. However, you will find bottles of liquid starch in the laundry detergent aisle of your average grocery or big box store and it can be ordered online. Popular brands include Lin- It and Sta-Flo.

You will notice that the liquid starch slime recipe comes together right away but looks rather stringy. Let this slime rest for about 5 minutes in a clean container, and the stringiness will have disappeared. You will have lovely smooth slime!

If you have a classroom full of early elementary age kids, liquid starch is probably the best slime recipe for ease of use! The measurements are simpler. There are no small measurements or solutions to mix. The success rate will be much higher and hopefully less messy!

LOOKING FOR A SLIME RESOURCE JUST FOR TEACHERS?

NOW A QUICK AND EASY WAY TO INCLUDE SLIME FUN IN YOUR CLASSROOM!

slime teacher pack

HOW TO MAKE SLIME MORE STRETCHY

I am often asked if there’s something you can add to slime to make it stretchy again especially after a couple of days or a week later. The topics of adding lotion or warm water seem to come up a lot!

Making slime with lotion during the mixing process might be a help. However, we have tested out a few slime variations and found that replacing the water with lotion during the actual mixing process of the saline solution recipe was our number one preference.  Simply adding a tablespoon of lotion didn’t really do all that much.

A warm water bath is also a common method for possibly fixing a slime is no longer stretchy.  Mainly this is used with a clear glue slime where adding lotion would not work due to the transparency of the slime. You can definitely try a warm water bath by filling a bowl with warm water and allowing your slime to hang out in for 30 seconds. The water won’t fix the batch of slime but it can loosen up the slime because the more warm a slime is, the more it will stretch.

HOW TO FIX HARD SLIME

If you have a rubbery or hard slime a few days later, adding lotion also didn’t seem to make any remarkable changes that we noted, but it did not do any harm either. We simply used dollar store lotion.

Neither lotion or warm water in our opinion will completely change the consistency of your slime and your best bet is to simply try your slime recipe again!

Check out my FAVORITE SLIME RECIPE of all!

HOW LONG DOES SLIME LAST?

Slime lasts quite a while! I get a lot of questions regarding how I store my slime. We use reusable containers in either plastic or glass. Make sure to keep your slime clean and it will last for several weeks. I love the deli-style containers I have listed in my recommended slime supplies list.

If you want to send kids home with a bit of slime from a camp, party, or classroom project, I would suggest packages of reusable containers from the dollar store or grocery store or even Amazon. For large groups, we have used condiment containers and labels as seen here.

MORE SLIME MAKING RESOURCES!

HOW TO FIX SLIME: A BASIC GUIDE TO MAKING SLIME LESS STICKY!

No more having to print out a WHOLE blog post for just one recipe!

Get our basic slime recipes in an easy to print format so you can knock out the activities!

—>>>  FREE SLIME RECIPE CARDS

35 Comments

  1. Why did your fluffy slime recipe at the bottom of the page where all the slime recipes are call for glue and 3-4 cups of shaving cream if in your video you didn’t even add glue? And you did only one cup.

  2. It’s just a quick video to share not a tutorial. You can watch the full live video on FB though!

  3. Having an issue with my little ones slime.
    We made slime with borax solution which worked pretty well. It made a good slime that was stretchy and wasn’t sticky. However the next day it had completely turned to liquid. Does anyone have any ideas what happened or knows what I should do to fix it.

  4. Did you use the exact measurements in our recipe as well as Elmers washable school glue?

  5. You might have not added enough of something, or left it in a hot/cold place. Slime with melt if you leave somewhere not room temperature!

  6. Maybe you have put too much water.
    For a perfect transparent slime you have to add the water slowly in order to avoid to create air bubbles into it.
    There’s a glue name Cleopatre which is wonderful for this kind of slime.

    @littlebins in any case, using saline solution as activator is a great idea. much safer! 🙂

  7. Hi thanks for your slime recipe ..I have a question ill be using slime party favor for my son’s bday if ill be doing 8 0z of glue what is tje ratio of baking soda and saline solution? I tried to put 1 tbsp of baking soda and 2 tbsp of saline bit of turns out hard and break easily. Should i put water? Thanks a lot

  8. Thanks for this page with perfect slime recipe. We made 4 lots of coloured slime and had great fun.
    Cheerio. Jenny

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