Here is the easy way how to make slime! This Galaxy Slime recipe is one of our favorite slime recipes because it is a simple way of making slime, has those beautiful galaxy slime colors and includes sparkles and stars too! This basic slime recipe is perfect for learning how to make slime with kids of all ages. Let’s make a colorful sparkly slime recipe!

Text: galaxy slime  - finished galaxy recipe for kids - shown are colorful slime stretched with colors of red, purple and blue - Kids Activities Blog
Let’s make galaxy slime!

Best Galaxy Slime Recipe

This glitter glue slime recipe is one of my favorites because it doesn’t not require slime ingredients like contact solution or borax which are not common in my house. Liquid starch is inexpensive and works really well for this fluffy slime recipe of many colors.

Related: 15 more ways how to make slime at home and Best Goop, Oobleck, Gak, Silly Putty, & Slime Recipes You Can Make

This really is the easy way to make slime and the sparkly star confetti made it even more fun!

How to Make Galaxy Slime

Whip up a batch of this DIY slime recipe for hours of fun sensory play and space slime entertainment.

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Ingredients Needed to Make Galaxy Slime Recipe

Directions for Homemade Galaxy Slime Recipe

Step 1

Step 1 - How to  make slime: Galaxy Slime - squeeze colored glitter glue into a small bowl
The first step to making slime is to start with colorful glitter glue

Add the glitter glue into a bowl and stir in 1/4 cup of water and mix the glue mixture well.

Alternative: Use clear glue and add your own silver glitter.

Step 2

Step 2 - How to  make slime: Galaxy Slime - Galaxy Slime - add additional coloring and star confetti shown here in a glass bowl in purple sparkles
Now add coloring and star confetti!

Add a few drops of liquid watercolor to create the desired color then add in the star confetti.

Alternative: Food coloring is always an option when making slime. We liked the watercolor paint for this one because of the vibrance.

Step 3

Step 3 - How to  make slime: Galaxy Slime - add the liquid starch and stir to combine then put on table to knead - blob of purple sparkly slime recipe shown on white table
Once the liquid starch is combined, knead slime on the table.

Pour in 1/4 cup liquid starch and stir to combine. The slime will start to separate from the sides of the bowl — remove it from the bowl and knead with your hands until it is no longer sticky and stretches easily.

Step 4

Step 4 - How to  make slime: Galaxy Slime - repeat the process with other colors - shown here is bright pink slime recipe, bright purple slime recipe and bright blue slime recipe
Next we will repeat the slime making process for other colors.

Repeat the slime making process with the remaining colors and ingredients to create three different colors of slime: blue, pink, and purple.

Finished Galaxy Slime shown here stretched while holding from above
Our galaxy slime is now complete!


Stretch the layers together to create a gorgeous galaxy effect!

Close up of finished DIY galaxy slime recipe with stripes of bright color, sparkles and stars
Admire how sparkly our DIY slime recipe turned out!

So cool, right?

How to Store Your Own Galaxy Slime

Use an airtight container to store your DIY galaxy slime. I love using leftover clear plastic food containers or a small zipping plastic bag. Generally homemade slime will last for several months if left in a sealed container at room temperature.

Child playing with finished galaxy slime recipe stretching the homemade slime with both hands
It is so fun to make and play with homemade slime!

Our Experience Making Galaxy Slime

My son loves playing with homemade slime, and we are always looking for ways to make different and interesting recipes. He loved creating the different colors, then watching them mix and spread.

Step by Step Pictures of How to Make Slime

Galaxy Slime

Here is a picture summary of the steps to making slime the easy way.

First Time Making Slime?

What ingredients do I need to make slime?

This is typically the first question people have. The basic ingredients for a simple slime recipe often include school glue (PVA glue)- we use glitter glue in this slime recipe, a slime activator (like borax solution, liquid starch, or saline solution containing boric acid and sodium borate) – we used liquid starch, and some water. Additional elements can include food coloring, glitter, or scents for customization.

How do I make slime without borax?

Due to safety concerns with borax, many people look for alternative activators. Solutions like baking soda and contact lens solution (which contains boric acid and sodium borate), liquid laundry detergent, or cornstarch recipes are often cited as substitutes. We use liquid starch in this slime recipe because traditionally liquid starch is made of vegetable products. You can check your packaging to see what your liquid starch ingredients might be.

Why isn’t my slime forming?

This is a common issue for first-timers if the slime isn’t turning out as expected. The problem could be with the proportions of ingredients, the type of glue used, or the activator. Some troubleshooting tips may be required, such as adjusting the amount of activator or ensuring all ingredients are mixed thoroughly.

How do I get the slime to the right consistency?

Achieving the perfect slime texture can be tricky. People often need to know how to thicken slime if it’s too runny (usually by adding more activator or glue) or how to thin it out if it’s too stiff (usually by adding warm water or lotion).

Yield: 1

How to Make Slime - Easy

Galaxy Slime recipe shown stretched from top to bottom
Active Time 10 minutes
Total Time 10 minutes
Difficulty Medium
Estimated Cost $5


  • 3 – 6 oz bottles of glitter glue
  • 3/4 cup water, divided
  • 3/4 cup liquid starch, divided (also called laundry starch)
  • silver confetti stars
  • liquid water colors — we used a variety of colors: purple, magenta, and teal


  • 3 bowls
  • Something to stir with like a stick or spoon


  1. In one of the bowls, add the glitter glue and 1/4th cup of water.
  2. Stir to combine well.
  3. Add the desired amount of paint coloring while stirring.
  4. Add the star confetti and stir.
  5. Add 1/4th cup of liquid starch and combine.
  6. Remove from bowl and start to knead.
  7. Continue kneading until the best slime consistency.
  8. Repeat the above steps for each color - our galaxy slime colors were blue, pink and purple.


Using paint is optional as it can cause a mess.

More Homemade Slime Recipes for Kids to Make

How did your easy galaxy slime recipe turn out?

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  1. I have been wondering how to make slime for kids at home. This project might get a little messy but I think it will be worth all the smiles and laughter.

  2. I always need rainy day activities for my boys. This galaxy slime is the perfect activity when we are stuck inside.

  3. Making galaxy slime will be a perfect addition to our science lesson! My kids love all things slime related and this is sure to please them!

  4. This glittery galaxy slime looks out of this world! My kids are going to love playing with this slime. I think I’ll see if I can also find some little foam planets to add in as well.

  5. When first looking into how to make slime for kids, all I could find were slime recipes with Borax, which I really wasn’t comfortable having my kids play with. They LOVED this galaxy slime! The recipe is very easy to follow and it comes out so pretty!

  6. I used this exact galaxy slime recipe for my daughter’s space-themed 6th birthday! We had such a cool spaceship escape room party, and I included tiny plastic ramekins of this slime in the goody bags for kids to take home, after! It was a hit, and super easy to make!