DIY Geode Bath Bombs

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DIY Geode Bath Bombs


  • 3 tbsp. epsom salt/ coarse sea salt/dead sea salt
  • 1 tbsp. coconut oil
  • food or soap coloring
  • 1/2 cup baking soda
  • 1/4 cup citric acid
  • 1/4 cup corn starch
  • 1/2 to 1 tbsp of rubbing alcohol
  • a few drops of essential oil (optional)


First we make the bath bomb

  1. Combine your dry ingredients. Add 1/2 cup of baking soda, 1/4 cup of citric acid and 1/4 cup of corn starch to a bowl. Mix well. Add a few drops of essential oil if you want to give your bath bombs a nice scent. I used rose geranium essential oil and added about 6 drops. You can change the amount to your personal preferences.
  2. Next you’ll need to add your wet ingredient. Add 1/2 to 1 tablespoon of rubbing alcohol to the dry mixture. The amount of liquid you need largely depends on the humidity in the air. Carefully add small amounts of rubbing alcohol and stir to combine. If the mixture starts to fizz in the bowl you’ve added too much.
  3. Check the mixture regularly by taking a handful in the palm of your hand and squeezing it together. The mixture should clump together. At this point I’m not adding any oil yet. To add the bath salts to the bath bomb you’ll need plenty of coconut oil.
  4. Fill one half of a round bath bomb mold with the mixture. Push the mixture to the edges so the sides are higher than the middle part. The edges will look a little rough and unfinished. Give the bath bombs time to dry. I let them set in their molds. Once they have hardened they should fall right out of their mold.

Transform your bath bomb into geode bath bombs

  1. Put 3 tbsp. of bath salts in a bowl. I used a combination of Epsom salt, dead sea salt and coarse sea salt, but you can use just one kind or mix your own favorites. I’ve noticed that dead sea salt doesn’t absorb coloring as well as other salts, but Epsom salt or sea salt works great!
  2. Scoop out about 1/3 of the bath salts in a separate bowl. Add a drop of food or soap coloring of your choice and stir well to combine. Make sure all of the coloring is distributed evenly over the bath salts. I made 1 batch with a drop of blue soap coloring and 1 with red soap coloring, which turned out a pretty pastel pink color.
  3. You can also use pink himalayan salt in the middle if you don’t have coloring or don’t want to use it to keep it all natural. Set aside to let the salts soak up all the dye.
  4. Melt the coconut oil in a microwave or double boiler. The oil should be completely melted but not piping hot. Back to the bath salts. Scoop about 1 teaspoon of the regular salts on top of each bath bomb. Distribute evenly so the top of the bath bomb is covered with bath salts.
  5. Next scoop about 1/2 teaspoon of the colored salts in the middle. The desired effect should be that the outside of the geode looks white/transparent and the inside looks colored. To make the bath salts stick we are going to use the coconut oil. Drizzle no more than 1/2 teaspoon of coconut oil over the bath salts on each bath bomb. Each drop of coconut oil will secure the bath salts in place. Use as little coconut oil as possible, because the more oil you add the less the bath bomb will fizz.
  6. Set aside to let the coconut oil solidify. Put them in the fridge to speed up the process. Once it has the bath salts should stick to the bath bomb.

Note: this only works if coconut oil is solid at room temperature where you live. If it won’t solidify properly try adding Shea butter to the coconut oil before you melt it.

Make it rock

Now your bath bomb is starting to look like a geode it’s time for the finishing touch.

  1. I added some silver and gold edible glitter dust to the outside of the bath bomb to make it look even more like a rock.
  2. To paint your bath bombs mix a pinch of edible glitter with a drop of rubbing alcohol.
  3. It takes some time to paint each and every bath bomb from top to bottom so you can choose to skip this step or only paint the top outer rim of the geode bath bomb.
  4. Dip a fine paint brush in the glitter “paint” and paint the sides with even strokes.
  5. Give the paint some time to dry and they are ready to be packaged as a gift or used all by yourself!

credit by themakeupdummy.com

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