Color Changing UV Slime Recipe for Kids

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A hand holding glossy purple color-changing slime with the text “COLOR CHANGING slime” in playful bold font, and the website bethannaverill.com displayed below.

This color changing UV slime recipe starts out looking like regular slime until you step outside. Them BAM . . . science takes over, and the color changes right before your eyes. It's like having your own little chameleon right there in your hand. It's the perfect slime for summer (when I want the kids outside anyway), spring science units, or when you're just in a hands on science kinda mood.

Searching for more fun summer activities? Check out all these Bug Activities for Kids.

Jump to Supplies Steps More ideas

What You Need for Color Changing UV Slime

  • 5 oz Elmer's color-changing glue Shop
  • ½ Tsp baking soda Shop
  • 1 ½ Tbsp Contact Solution (contact solution should contain Boric Acid) Shop
  • Bowl Shop
  • Spoon
  • Measuring cup and spoons Shop

How to Make Color Changing UV Slime

Step 1: Gather your supplies

Gather all the supplies needed.

Step 2: Add the baking soda

Add baking soda.

Step 3: Add the color-changing glue

Add the color changing glue to the baking soda and stir.

Step 4: Add the contact solution

Knead contact solution into the slime until it’s no longer sticky and pulls away from the sides of the bowl.

Step 5: Knead it together

You may need to knead to incorporate all the ingredients well.

All done!

Head outside and watch as the slime changes colors. Add a toy to see the colors vibrantly.

UV slime changing from blue to purple in the sun

We'd love to see yours! Snap a photo and share it in the comments.

Tips for the Best UV Slime Experience

🧴 Use the right glue: Make sure you're using the actual Elmer’s UV color-changing glue it’s the secret ingredient that makes the magic happen. I don't say that to be picky, but because there isn't a great alternative out there yet. ☀️ Test it indoors and outdoors: Let kids guess what color it might change to before heading outside!

🧼 Slime too sticky? Add a tiny bit more contact solution and knead it well. It'll come together with a little patience. 🧪 Bonus tip: Use this moment to talk about how UV light is invisible to the naked eye but still affects things around us, like this slime!

Storing Your Color Changing Slime

Once you’re done playing (and wow-ing your neighbors), store your UV slime in a resealable baggie or airtight container. It should last a few days of fun if kept sealed!

More Slime Recipes

See all Slime Recipes for Kids →

Please Share This UV Slime Recipe How to

Your shares are how this site grows and I am sincerely grateful. Know a friend who’d like this? Please share it on Facebook or save it to your favorite kids’ activity board on Pinterest.

glossy purple color-changing slime with the text “COLOR CHANGING slime” in playful bold font, and the website bethannaverill.com displayed below.

As an Amazon Associate I earn from qualifying purchases.

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