There's nothing like a long, warm, fizzy bath at the end of the day—and there's something even better about knowing that you made those fizzy bath bombs with your own two hands. Bath bombs can be a fun indulgence or a great gift, and with this simple tutorial, you can make them in batches to use or to share. Once you get the hang of this simple technique, you can customize your creations with various shapes, sizes, colors, and scents to really get creative.
Equipment / Tools
- Mixing bowl
- Measuring spoons
- Spoon for stirring
- Bath bomb molds
- 1 cup Baking soda
- 1/2 cup Citric acid
- 1/2 cup Cornstarch
- Food coloring
- Essential oil of your choice
Mix the Baking Soda and Constarch
Mix the baking soda and cornstarch in a large mixing bowl. For now, keep the citric acid set aside and do not mix it in. Use a mixing spoon to break up any clumps.
Add Essential Oil
Add the essential oil a few drops at a time into the mixture and mix until fully incorporated. You may find that it's easier to use your hands to incorporate the oil, rather than a spoon. If desired, you can wear gloves to keep your hands clean.
Add the Coloring
Mix the color a few drops at a time into the dry mixture using your hands. The more drops you use, the deeper and more saturated the color will become.
If you're planning on making multiple colors of bath bombs from this single batch, separate the dry ingredients into equal parts in different bowls (you'll need to separate the citric acid as well).
Add the Water
Add water half a teaspoon at a time, stirring the mixture in after each addition. Keep adding water until the mixture becomes the texture of damp sand and will hold in a tight clump.
Add the Citric Acid
Add the citric acid and thoroughly combine until well-mixed.
Mold the Ball
Pack the two sides of your bath bomb mold full of the mixture. Pack it tightly and slightly overfill. Press the two sides of the mold together as tightly as you can. Gently pull off one side of the mold, flip the ball over into your hand, and pull off the other side of the mold.
Handle the bath bomb very gently, as the mixture is still slightly damp and not yet hardened.
Smooth the Sides
Use the back of the spoon to smooth the seam of the ball where the molds met.
Let the Balls Dry
The bath bombs need to harden before they can be used. Leave them to dry overnight at room temperature.