How to Make Lavender Bath Bombs

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These DIY bath bombs are so fun to make. With just a few natural ingredients you can make your own lavender bath bombs that look and smell beautiful. 

Lavender is my favorite scent for all things bath and body. It’s calming, relaxing, and gentle. Plus, I grow my own lavender plants that come in handy for these types of DIY projects. 

So, if you find yourself with cuttings from a lavender plant or are just in the mood for some lavender bath bombs, you’ve come to the right place! This is an easy, no-fail bath bomb recipe that works every time. 

Note: This post may contain affiliate links, which means if you buy from my link I might make a small commission. This does not affect the price you pay. See the full affiliate disclosure here.

DIY bath bombs

How to Make Homemade Bath Bombs

Making bath bombs may sound intimidating, but it’s really not that hard once you get the hang of it. You do need a few specialty ingredients and supplies to get started. Let’s look at what ingredients and supplies you’ll need. 


You can find most bath bomb ingredients at the grocery store. Other ingredients are optional and can easily be found online. 

Here’s what you’ll need to make lavender bath bombs:

  • Baking soda
  • Epsom salt
  • Citric acid – see more on this below
  • Cornstarch
  • Almond or coconut oil
  • Lavender essential oil
  • Mica powder (optional)
  • Dried lavender buds (optional)
DIY bath bomb ingredients

Citric Acid for Bath Bombs

You can usually find citric acid among the canning supplies at the grocery stores and it’s easily available online. When looking for citric acid, you want food grade quality since you’ll be using it on your skin. 

Follow precautions when using citric acid. These should be readily labeled on the package, but the general precautions are to avoid direct contact with eyes and to avoid breathing in the dust when pouring the citric acid to measure it. Food grade citric acid is safe and commonly used in food and beauty products, but it can be irritating. 

What is the purpose of citric acid in bath bombs?

The citric acid (acid being the key) reacts with the baking soda in bath bombs and creates the fizzing action we love. 

Citric acid can be substituted with other acids like cream of tartar, lemon juice, or buttermilk powder. However, I haven’t tested this recipe with those ingredients.  

Yields: 5 medium bath bombs

Supplies for Bath Bombs

Besides the ingredients for the bath bombes, you’ll need a few supplies. Here is a list of what you’ll need to make these lavender bath bombs. Please read through the instructions as some ingredients and supplies are optional.

  • Bath bomb molds – can be substituted with other molds, ice cube trays, muffin pans, plastic Easter eggs, etc. 
  • 1 large glass or plastic mixing bowl
  • 1 medium glass or plastic mixing bowl
  • 1 small glass or plastic bowl 
  • Whisk

How to Make Lavender Bath Bombs

Step One

Combine the baking soda, epsom salt, citric acid, and cornstarch in a large bowl. Whisk the ingredients together until they are combined and there are no clumps.

Step Two

Combine the almond oil and essential oil in a separate, small bowl. Stir the wet ingredients to combine thoroughly. 

Step Three

Add the oil mixture to the dry ingredients and mix thoroughly. 

Note: Use your hands to make sure the oils are incorporated into the dry ingredients.

Note: The resulting texture should be like that of wet sand. When you squeeze the mixture together, it should form a clump in your hand. If it doesn’t, slowly add an additional ? teaspoon of oil at a time until your mixture comes together. 

Step Four

Divide your mixture in half and move one half to a separate bowl. Add the mica powder to the mixture a little at a time until you reach your desired color. 

Step Five

Add a small amount (about ¼ teaspoon) of lavender buds to the bottom of one half of your bath bomb mold. This will be the top of your finished bath bomb.

how to make DIY lavender bath bombs

Step Six

Add a small amount of white bath bomb mixture and then a small amount of purple mixture. Continue creating layers until the mold is overflowing. 

Repeat this step for the second side of the bath bomb mold. Gently pack down the mixture before adding the final mixture to each side. 

Note: Make sure that the bath bomb mixture is heaped on both sides before squeezing the mold together. The excess mixture will ensure that the mold gets filled tightly and any extra will be pushed out of the seam of the mold. 

Step Seven

Gently release the bath bomb from the mold one side at a time and let it rest on a flat surface lined with plastic wrap, wax paper, or parchment paper.

Note: If you are having issues getting the bath bomb out of the mold, gently tap the mold with the backside of a spoon. 

how to make DIY lavender bath bombs

Step Five

Let the bath bombs sit overnight or up to 24 hours before handling or use. This will allow the bath bomb to set up and harden so it doesn’t fall apart. 

Step Six

To use the bath bombs, run a bath and then drop the bath bomb into the water. The mixture should fizz and dissipate into the bath water. 

Note: to keep the lavender buds from going down the tub drain, scoop them out before draining the water or use a drain filter. 

Lavender Bath Bombs

How to make luxurious homemade lavender bath bombs at home. These bath bombs are perfect for gifts or for your own use.
Prep Time30 minutes
Drying time1 day
Total Time1 day 30 minutes
Course: DIY
Keyword: DIY
Yield: 5 bath bombs


  • Bath bomb molds
  • 1 large mixing bowl
  • 1 medium mixing bowl
  • 1 small bowl/container
  • Whisk


  • 1 cup baking soda
  • ¾ cup epsom salt
  • ½ cup citric acid
  • ½ cup cornstarch
  • 2.5 tablespoons almond oil or melted coconut oil
  • 15-30 drops lavender essential oil
  • ?-½ teaspoon purple mica powder
  • 1 ¼ teaspoons dried lavender buds

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