How to Make Iceberg Slime

Iceberg slime is a fluffy slime with a crunchy top layer that looks like a layer of ice! Make a batch of plain fluffy slime and leave it out for a few days to transform it into iceberg slime. It’s a simple putty-like mixture that’s a lot of fun for kids to squish and play with. Even adults can benefit from it as a stress reliever! If borax is not properly prepared in slime, it can be harmful. Have fun sliming!


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 Making Fluffy Slime

1. In a large mixing bowl, combine the white glue, liquid starch, and shaving cream. Fill the bowl with 2 2/3 cups (417 mL) Elmer’s white school glue and 2 cups (500 mL) shaving cream. As the final ingredient, add 2/3 cup (167 mL) liquid starch.

To make the slime more translucent, use clear glue instead of white glue.

2. If you want to change the colour of the slime, add food colouring to the mixture. Add a few drops of food colouring to the mixing bowl with the other ingredients. This will change the slime’s colour from white to whatever colour you choose.

If you want multiple colours, divide the batch into separate bowls before adding the food colouring.

3. Stir in all of the ingredients until the mixture is stiff. Mix the ingredients as thoroughly as possible with a spoon or other mixing utensil. When the slime becomes too stiff to mix with a utensil, stop stirring.

If the slime is too stiff, add 1 tbsp (15 ml) of water at a time and keep mixing to soften it.

4. When the slime becomes too stiff to mix with a utensil, knead it with your hands. Knead the mixture with your hands and knuckles, just like bread dough. Stop when everything has a putty-like consistency.

If it’s easier, remove the slime from the bowl and knead it on a counter or cutting board.

5. If you aren’t making iceberg slime, store fluffy slime in airtight containers. Fill jars, sealable bags, or tupperware containers with your new fluffy slime. This will keep your slime moist and fresh for longer.

If you want to make iceberg slime immediately, don’t store the fluffy slime in airtight containers.

Part 2 Turning Fluffy Slime into Iceberg Slime

1. Flatten out the fluffy slime in a bowl. Fill a bowl halfway with fluffy slime, or divide it among several if you want to make several smaller batches of iceberg slime. Flatten it with your hands to make an even layer in the bowl.

A dollar store will sell you some cheap plastic bowls that are ideal for making iceberg slime in.

2. Allow the bowl to sit uncovered for 2-4 days, or until the top layer becomes crunchy. Place the bowl containing the fluffy slime on the counter or somewhere out of the way. Allow it to sit for two days, then check the surface to see if it has hardened. If the top layer hasn’t hardened yet, leave it for another 1-2 days.

When the fluffy slime has turned into iceberg slime, the top layer should crack when you press your finger against it.

Larger batches of slime require more time to harden.

3. Poke and play with the iceberg slime before allowing it to dry out again. For a fun sensory activity, crack the surface of the iceberg slime with your fingers and hands. Knead and squish the slime until it regains an even consistency, then flatten it out in a bowl and let it harden for another 2-3 days to make another batch of iceberg slime.

After the second batch of iceberg slime, make a fresh batch of fluffy slime and restart the process before it becomes old and stinky.

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