With its soft texture and stunning rainbow layers, this project is a great way to explore colour mixing, sensory play, and hands-on creativity. It’s easy to follow, visually exciting, and perfect for anyone who loves a splash of colour in their crafts. So let’s dive in and make some rainbow magic, one layer at a time!

Helpful Tips:

What is used to colour rainbow slime?

You can use acrylic paint, food colouring, or liquid watercolours to colour your slime. Liquid watercolour paint will give you the most vibrant colours, but all three options work well!

How long does rainbow slime last?

Your slime should stay good for about a week or a little longer if stored in an airtight container. To keep the rainbow look, store each colour separately. For longer lasting slime, always wash your hands first and play on a clean surface. And if the slime smells off or looks odd, it’s best to toss it and make a new batch.

Can I stop the rainbow slime colours from mixing?

Rainbow slime looks amazing when you first bring the colours together, but eventually they’ll blend into a purple shade as you play with it. That’s just part of the fun! To get the most out of the rainbow effect, divide each colour into 10 small sections. This gives you more time to play and explore before they mix. And if you save your slime for a few days, the colours tend to blend more slowly! Rainbow slime isn’t just bright and beautiful — it’s a fun, hands-on way to explore colour, creativity, and sensory play. Whether you’re making it for springtime fun, a St. Patrick’s Day activity, or simply because your day could use a splash of colour, this slime is sure to bring smiles all around. Every swirl and stretch is a chance to experiment and play, making it a craft you’ll want to come back to again and again. So break out your slime making supplies, roll up your sleeves, and enjoy the magic of rainbows whenever inspiration strikes!

Here’s even more rainbow craft ideas:

Grow a Rainbow Experiment Rainbow Sensory Bottles Paper Rainbow Craft

Where to buy:

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