Combine the baking soda and citric acid together and then slowly mix in the water, if you happen to have a spray bottle for water that would be great but it is perfectly alright to just pour it in a little at a time as well.
Mix the water into the dry ingredients until it will hold its shape when squeezed together.
Divide the mixture into four parts. Leave one portion in the original mixing bowl without any coloring added. In the other three smaller bowls, add just one drop of food coloring to each and mix until the color is even.
Transfer some of each color in different spots for your silicone mold.
Fill the entire mold and press down really firmly to ensure it will hold together after drying.
Set the mold in a dry and sunny spot to air dry for about 24 hours. This could take a little more or less time depending on how humid the air is in your home.
You’ll know the fizzzies are ready when they pop right out of the mold, feel hard, dry and almost brittle.
You’ll need the following for this DIY recipe:
1 silicone mold
1 small bowl for mixing
3 smaller bowls or cups for separating mixture
1 rubber spatula to fold in mixture
Here’s your fun DIY unicorn 🦄 horn bath bomb in action…