Ages 5+

Planet Bath Bombs


Dive into kid-friendly chemistry with a set of planet-themed bath bombs you crafted yourself! Mix together citric acid, baking soda, cornstarch, and food coloring to make a variety of colorful bath bomb powders. Use a set of molds to shape the powders into multi-layered bath bombs inspired by the layers of the Earth. Then drop your bath bombs into the water to see a frothy, fizzy chemical reaction!Read more

From the desk of the product designer:

Behind the design

We wanted to make the bath bomb experience more educational. Now kids can learn about the anatomy of a planet while making their bath bombs, from core to crust!

- KiwiCo Product Designer

By the numbers


Planets created during testing


Planets cut open


Test baths



18 reviews

Customer images



    I liked making them, but I thought the color would stay longer and that it would be more sudsy when I bathed with it.



    My son loved making these and then using them at bath time. He had fun doing the store by step process and doing different color combos. He could not believe how fizzy they were when he got to used the finished product. He made a total of 5 bath bombs. This was such a good gift.



    Perfect gift for my Granddaughter



    We love this box! the kids had so much fun with it!



    I would love it if you included the measurements for the ingredients so that we could make them again using the equipment that was provided.



    Had lots of messy fun with this crate! My son loved created the bath bombs and my youngest loved watching it fizzle up. It was fun for all of us. At first we all had a hard time getting the right consistency for the bath bomb but eventually got it. I always love how they provide everything you need!

    Kiana 's image 1
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