Here’s what you’ll need:
- 3 tablespoons of epsom salt
- 1 tablespoon of solid coconut oil (the purpose is for the coconut oil to harden after it has been melted, so make sure to use a solid coconut oil that you melt yourself)
- 6 drops of blue food coloring (if you prefer all natural products, you can use pink himalayan sea salt as a substitute for a light pink geode bath bomb)
- 1/2 cup of baking soda
- 1/4 cup citric acid or cream of tartar (I used cream of tartar, but citric acid can also be found at most local grocery stores)
- 1/4 cup of corn starch
- 5 drops of lavender essential oil
- 1 teaspoon of water
- 6 cupcake liners (This will keep the bath bomb together easier and prevent it from falling apart. (I did not use them the first time around, so they are not pictured Lesson learned!)
- Combine: Corn starch, baking soda, and citric acid or cream of tartar in a medium sized mixing bowl. Whisk together until blended.
2. Add teaspoon of water, 1 teaspoon of melted coconut oil, and 5 drop of lavender essential oil to the dry mixture. It should feel like sand, but able to clump together in your hand. Add a few more drops of water until you are able to clump.
3. Line cupcake pan with 6 cupcake liners and distribute the bath bomb solution evenly into each one.
4. Press down in the center of each bath bomb so there is an indentation in the center to add the epsom salt later. Cover them and set aside for the night to let the bath bombs harden. (Tip: you can put them in the freezer for a few hours to speed up the process).
5. Now it’s time to make the center “geode”. Mix 1 tablespoon of epsom salt and 2 drops of blue food coloring. Mix until the dye is blended into the epsom salts. In a separate bowl, combine 1 tablespoon of epsom salt and 4 drops of food coloring. This will allow you to create different shades of blue, alluding to the layers of a geode rock. Set aside 1 table spoon of epsom salts without any dye. This is your base layer.
6. Add around 1/4 of a teaspoon to 1 teaspoon of white epsom salt to the center of each bath bomb and spread evenly. This will be your outer layer, so make sure you spread it close to the edge of the bath bomb.
7. Next, repeat the process with the lighter shade of blue epsom salt. You do not have to spread this out as far as the white epsom salt. Lastly, spread the dark blue epsom salt in the center of the bath bomb, creating a small circle.
8. Now it’s time to set the bath bomb. Melt the remaining 2 tablespoons of coconut oil in the microwave. Spread out evenly onto the 6 bath bombs. Let sit for a few hours so the coconut oil can harden, or put in the refrigerator to speed up the process. This will help your epsom salts stay in the bath bomb until ready to use.
9. If you want to make them look more like geodes shape wise, you can take them out of the cupcake liner and let crumble.
10. Dispense into warm running bath water and enjoy the relaxing scents of lavender and the calming blue color of the water.