Iceberg slime is a variation of fluffy slime that has a crunchy top layer, like a layer of ice! Make a batch of plain fluffy slime, then let it sit out for a few days to turn it into iceberg slime. It’s an easy putty-like mixture to create at home that’s loads of fun for kids to squish and play with. It can even be a great stress reliever for adults! Borax can be harmful if not prepared properly in slime. Happy sliming!

Ingredients

  • 2 2/3 cups (417 mL) of Elmer’s white school glue
  • 2/3 cup (167 mL) of liquid starch
  • 2 cups (500 mL) of shaving cream
Part 1
Part 1 of 2:

Making Fluffy Slime

  1. 1
    Put white glue, liquid starch, and shaving cream in a large mixing bowl. Pour 2 2/3 cups (417 mL) of Elmer’s white school glue and 2 cups (500 mL) of shaving cream into the bowl. Add 2/3 cup (167 mL) of liquid starch as the last ingredient.[1]
    • You can use clear glue instead of white glue to make the slime more translucent.
  2. 2
    Add food coloring to the mixture if you want to change the color of the slime. Put a few drops of food coloring into the bowl with the ingredients. This will change the color of the slime from white to any other color you want.[2]
    • Divide the batch into separate bowls before you add food coloring if you want multiple colors.
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  3. 3
    Stir all the ingredients together until you get a stiff texture. Mix the ingredients together as much as you can with a spoon or other mixing utensil. Stop stirring when the slime is too stiff to mix anymore with a utensil.[3]
    • If the slime is too stiff, then add 1 US tbsp (15 ml) of water at a time and keep mixing it to make it softer.
  4. 4
    Knead the slime with your hands when it becomes too stiff to mix with a utensil. Use your hands and knuckles to knead the mixture like bread dough. Stop when it is all an even putty-like consistency.[4]
    • You can take the slime out of the bowl and knead it on a counter or cutting board at this point if it’s easier.
  5. 5
    Store fluffy slime in airtight containers if you aren’t making iceberg slime. Put your new fluffy slime in jars, sealable bags, or tupperware containers. This will keep your slime moist and fresh.[5]
    • If you want to make iceberg slime right away, then don’t store the fluffy slime in airtight containers.
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Part 2
Part 2 of 2:

Turning Fluffy Slime into Iceberg Slime

  1. 1
    Put fluffy slime in a bowl and flatten it out. Place a batch of fluffy slime into a bowl, or divide it among several if you want to create several smaller batches of iceberg slime. Flatten it out with your hands so that it creates an even layer in the bowl.
    • You can get some cheap plastic bowls at a dollar store that are perfect for making iceberg slime in.
  2. 2
    Leave the bowl uncovered for 2-4 days until the top layer is crunchy. Place the bowl with the fluffy slime on the counter or somewhere else out of the way. Leave it for 2 days, then check on the surface to see if it is hard. Leave it for another 1-2 days if the top layer has not hardened yet.[6]
    • The top layer should crack when you press your finger against it when the fluffy slime has turned into iceberg slime.
    • Larger batches of slime take longer to harden.
  3. 3
    Poke and play with the iceberg slime, then let it dry out again. Use your fingers and hands to crack the surface of the iceberg slime for a fun sensory activity. Knead and squish the slime together until it is an even consistency again, then flatten it out in a bowl and let it harden again for 2-3 days to create another batch of iceberg slime.
    • After the second batch of iceberg slime, it’s best to make a fresh batch of fluffy slime and start the process over again before it gets old and stinky.
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Community Q&A

  • Question
    Can I make slime without borax?
    Ella Punke
    Ella Punke
    Community Answer
    Yes, you can. Some of my friends use Sta-Flo, or baking soda and contact lens solution. However, Borax is definitely the cheapest option, and I find that it works the best.
  • Question
    How long would it take to make an iceberg?
    Community Answer
    Community Answer
    It will take 2 - 3 days to harden iceberg slime. It takes time to work its magic so it makes a crunch when you break into it.
  • Question
    Is there any other way to make fluffy slime? I don't have anything but glue, lotion and activator.
    Community Answer
    Community Answer
    Do you have soap? If so, mix it with water until it is bubbly. Then, pour it into the glue and add the activator.
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Warnings

  • Don’t follow any recipes for iceberg slime that call for borax as this can cause chemical burns.
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About This Article

wikiHow Staff
Co-authored by:
wikiHow Staff Writer
This article was co-authored by wikiHow Staff. Our trained team of editors and researchers validate articles for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. This article has been viewed 47,434 times.
42 votes - 78%
Co-authors: 15
Updated: May 1, 2021
Views: 47,434
Article SummaryX

To make iceberg slime, start by mixing 2 2/3 cups of school glue with 2 cups of shaving cream in a bowl. Then, add 2/3 cup of liquid starch and any food coloring of your choice to make it colorful. After you’ve added all of the ingredients, stir the mixture until it becomes stiff, then knead it with your hands until the slime can’t be mixed with a utensil. Once you’ve made your slime, put it in a bowl and flatten it with your hands. Leave the bowl uncovered for 2-4 days until the top layer becomes crunchy. When you're done playing with your slime, flatten it out again and leave it for another 2-3 days so it turns crunchy again. For more tips, including how to make translucent iceberg slime, read on!

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