Ghostly Gak Halloween Slime

2 min read September 13, 2026 Ashley Sharp
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This no mess, three ingredient ghost slime is sure to be a "spooktacular" hit during your Classroom Halloween Party! It has just the right amount of stickiness and ooze to provide the perfect texture for a fun Halloween sensory activity, yet is easy to clean up and is borax-free. To get started on making this "faBOOlous" slime, be sure to download the free Ghostly Gak Slime Recipe here.

Project Time
10 to 20 min
Difficulty
Beginner
Step
2

Stir in a 1/4 teaspoon of baking soda using a plastic spoon.

Ghostly Gak Halloween Slime step 2
Step
3

Add half of a tablespoon or up to 1 tablespoon of contact lens solution. Mix until the slime gets firm. If the mixture feels sticky, add a bit more contact lens solution. Note: The contact lens solution must contain boric acid, also called hydrogen borate, boracic acid, and orthoboric acid.

Ghostly Gak Halloween Slime step 3
Step
4

Decorate Clear Round Favor Containers using black adhesive foam. Simply cut out ghostly looking eyes and mouths from the foam, and then adhere them to the lid of the container. These containers are very versatile and work exceptionally well for DIY slime, including this super easy Snowman Slime.

Ghostly Gak Halloween Slime step 4
Step
5

Stretch, squeeze, squish, and watch the slime as it oozes into a ghost shape! Don't forget to download the free Ghostly Gak Slime Recipe here!

Ghostly Gak Halloween Slime step 5

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