Ages 9+
Ages 9+

Color Changing Slime


What you get

Explore the science of thermochromism — with squishy slime that shifts color when it changes temperature! Mix and knead two batches of colorful slime, then draw on them with an ice-water-dipped stylus to see their color-change powers in action. Ready to have a slime of a time?




From the desk of the product designer:

Behind the design

Getting the colors to change at exactly the right temperature was tricky. It took a lot of sampling and testing to figure out the balance, but now we know a ton about thermochromic materials in general.

By the numbers

Slimes made: 34

Ice cubes melted in slime: 50

Color changes seen during testing: too many to count!



16 reviews

Write a review

Feb 12 2023

10 year absolutely liked it. Great quality!

B, Z's Mom
Nov 22 2022

So much fun! My kiddo loves making slime, it's a big go to in our house, but the color changing slime made it extra special. This is also a different recipe than what we use at home, which also made it a bit more exciting.

Oct 26 2022

Worked as intended! Was so neat! Def wash your hands before and after using so that mold is less likely to grow on it.

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