Ages 5+
Ages 5+

Planet Bath Bombs


What you get

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!

One project can make 3-6 unique bath bombs.

As seen on: Red Tricycle


the Crate Challenge



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!
- The KiwiCo Product Design team

By the numbers

Planets created during testing: 67

Planets cut open: 51

Test baths: 4

Additional details



6 reviews

Write a review

Feb 3 2020

It had them thinking about planets. It was hands on and kept them interested for a long time. It makes bath time easier!

Jan 17 2020

The kids loved the whole thing! Bath bombs are one of their favorites right now.

Dec 12 2019

It was fun to do together, and I like how there was enough to make 3-4 bombs. My son loved making them and it made bath time much more fun for him.