Geode Half Bath Bombs
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These easy DIY geode bath bombs are a fun project for all. These gorgeous bath bombs were inspired by crystal rocks.
Make your own bath bombs to enjoy for a relaxing spa day at home. And to complete your at-home spa experience, these lemon lavender sugar scrub cubes will nourish your skin back to a silky smooth glow.

These geode bath bombs are perfect for anyone who loves spending time in the tub. Plus, they look so pretty that they would make a great gift for someone special. Keep reading for the how-to and make your own geode bath bombs!
These bath bombs should last up to a year if stored properly. To make sure your bath bombs last as long as possible, be sure to store them in an airtight container out of direct sunlight.
Geode Half Bath Bomb Supplies

You can find exact measurements, supplies, and instructions in the printable card at the end of this post.
- Baking soda
- Citric acid
- Cornstarch
- Epsom salts
- Silver-grey mica powder
- Purple mica powder
- Sweet almond oil
You will also need:
- Large bath bomb molds
- Whisk
- Small jar with lid
How to Make Geode Bath Bombs
- Add baking soda, citric acid, cornstarch, and ¼ cup of the Epsom salts (set aside the remaining ¼ cup of Epsom salts) to a large bowl and stir well with the whisk.
- Add the sweet almond oil and water to a jar with a lid and shake well.
- Very slowly add the liquid to the dry mixture, while whisking the entire time.
- Take out ⅓ cup of the mixture and add it to a smaller bowl.
- Add the silver-grey mica to the mixture in the larger bowl and stir until the color is solid.
- Fill one bath bomb mold halfway with the mixture, then press around the sides, until the entire mold is coated in the silver. Repeat for the rest of the molds.
- Add a spoonful of the non-colored mixture into the middle, then press down, making sure that you can still see the silver-grey edges.
- Allow bath bombs to set for a day, then unmold by gently pushing from one side until they release.
- Add the purple mica powder to the Epsom salts that you had set aside, and stir until the color is solid.
- Add a small spoonful of Epsom salts to the center of each bath bomb, making sure that you can still see the edges of the silver-grey and the white.
- Store upright in a flat container.

Looking for a way to add a little bit of glamour to your bath time? These DIY geode bath bombs are just the thing! With just a few ingredients, you can make your own bath bombs that will help you relax and rejuvenate. Plus, they look amazing, too!
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Geode Bath Bombs
What You’ll Need
- ½ cup baking soda
- ¼ cup citric acid
- ¼ cup cornstarch
- ½ cup Epsom salts divided
- 1 tsp silver-grey mica powder
- 1 tsp purple mica powder
- 1 tbsp sweet almond oil
- ½ tbsp water
Equipment / Tools
- Large bath bomb molds
- Whisk
- Small jar with lid
Instructions
- Add baking soda, citric acid, cornstarch, and ¼ cup of the Epsom salts (set aside the remaining ¼ cup of Epsom salts) to a large bowl and stir well with the whisk.
- Add the sweet almond oil and water to a jar with a lid and shake well.
- Very slowly add the liquid to the dry mixture, while whisking the entire time.
- Take out ⅓ cup of the mixture and add it to a smaller bowl.
- Add the silver-grey mica to the mixture in the larger bowl and stir until the color is solid.
- Fill one bath bomb mold halfway with the mixture, then press around the sides, until the entire mold is coated in the silver. Repeat for the rest of the molds.
- Add a spoonful of the non-colored mixture into the middle, then press down, making sure that you can still see the silver-grey edges.
- Allow bath bombs to set for a day, then unmold by gently pushing from one side until they release.
- Add the purple mica powder to the Epsom salts that you had set aside, and stir until the color is solid.
- Add a small spoonful of Epsom salts to the center of each bath bomb, making sure that you can still see the edges of the silver-grey and the white.
- Store upright in a flat container.