Kiwi NIB Kiwi Co Planet Bath Bombs

NIB Kiwi Co Planet Bath Bomb Learn about chemistry and design out-of-this-world bath bombs! Mix together citric acid, baking soda, cornstarch, and food coloring to make your bath bomb base before pressing into molds. Smush and sprinkle the colors on top of each other to create planetary layers before dropping them in the bath and watching them fizz