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7 bath bombs

Relaxing Lavender Bath Bombs

This recipe has everything you need to relax after a long day. It’s made with lavender 40/42 essential oil, borage oil, and Epsom salt.
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Additional Information

  • Description
  • Supplies
  • Instructions
  • Reviews
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The dried lavender on top is a simple finishing touch that makes these bath bombs perfectly giftable. Borage oil is lightweight and has amazing skin-loving properties. To help it mix into your bath, we added a bit of polysorbate 80. It’s an emulsifier that helps the oil mix into the water rather than pooling on top. It’s an optional ingredient, but we love the way it makes the water feel.

The light purple hue comes from Lilac La Bomb Colorants. La Bomb Colorants are specifically formulated for bath bombs – they’re made with water-soluble glycerin, which prevents a ring of color around the tub. Feel free to add more drops for a more saturated color.

  • Skill Level: Intermediate

  • Time to Complete: 1 hour

  • Kit Yields: 7 bath bombs


9 Ingredients
2 Tools
For All 11 Items
For All 11 Items
9 Ingredients
9 Items
We do our best to include just what you need to make your project, however due to available product sizes, you may have left overs.
Sodium Bicarbonate - 1 lb
Sodium Bicarbonate - 1 lb Item#:IB002935
Varient/Quantity/Set: 0
size: 1 lb
Price: $2.00

Citric Acid - 1 lb
Citric Acid - 1 lb Item#:IB000052
Varient/Quantity/Set: 0
size: 1 lb
Price: $3.25

Borage Oil - 4 oz
Borage Oil - 4 oz Item#:IB002498
Varient/Quantity/Set: 0
size: 4 oz
Price: $11.19

Polysorbate 80 - 1 oz
Polysorbate 80 - 1 oz Item#:IB002429
Varient/Quantity/Set: 0
size: 1 oz
Price: $2.99

Lavender 40/42 Essential Oil - 1.75 oz
Lavender 40/42 Essential Oil - 1.75 oz Item#:IB000265
Varient/Quantity/Set: 0
size: 1.75 oz
Price: $11.85

Lilac La Bomb
Lilac La Bomb Item#:IB600027
Varient/Quantity/Set: 0
size: 1 bottle
Price: $4.50

Dried Lavender - 3 oz
Dried Lavender - 3 oz Item#:IB002049
Varient/Quantity/Set: 0
size: 3 oz
Price: $6.99

Witch Hazel - 1 lb
Witch Hazel - 1 lb Item#:IB003098
Varient/Quantity/Set: 0
size: 1 lb
Price: $4.99

Epsom Salt, Extra Fine - 2 lbs
Epsom Salt, Extra Fine - 2 lbs Item#:IB002761
Varient/Quantity/Set: 0
size: 2 lbs
Price: $5.99

2 Tools
2 Items
Stainless Steel Bath Bomb Mold, 2 pieces - 1 mold
Stainless Steel Bath Bomb Mold, 2 pieces - 1 mold Item#:IB002296
Varient/Quantity/Set: 0
variant-quantity-set: 1
Price: $5.25

8 oz Clear Bottle with White Spray Cap - 10
8 oz Clear Bottle with White Spray Cap - 10 Item#:IB500008
Varient/Quantity/Set: 0
variant-quantity-set: 10
Price: $9.75




Relaxing Lavender Bath Bombs
This recipe has everything you need to relax after a long day. It’s made with lavender 40/42 essential oil, borage oil, and Epsom salt. 


Stainless Steel Bath Bomb Mold
32 oz. Baking Soda
16 oz. Citric Acid
4 oz. Extra Fine Epsom Salt
2 oz. Borage Oil
0.7 oz. Polysorbate 80
0.3 oz. Lavender 40/42 Essential Oil
About 12 drops Lilac La Bomb Colorant
Dried Lavender
Witch Hazel in a Spray Bottle



In a small container, add 2 ounces of borage oil, 0.7 ounces of polysorbate 80, 0.3 ounces of lavender 40/42 essential oil, and about 12 drops of Lilac La Bomb Colorant. Use a spoon to thoroughly mix all the ingredients together. The colorant won’t incorporate fully, but that’s okay.



In a large container, add 32 ounces of baking soda and 16 ounces of citric acid. To get rid of clumps, push the powder through a sifter or break them up with your fingers. Citric acid has a tendency to take off nail polish, so wear gloves to protect your manicure. Add 4 ounces of Epsom salt. Thoroughly stir the ingredients together.


Add the oil to the dry ingredients. Use your hands to thoroughly mix the dry and wet ingredients together.



Check the consistency of the bath bomb mixture. The perfect consistency is similar to wet sand that holds its shape when squeezed. If it’s too dry, use one hand to spritz the mixture with witch hazel and one to mix. Continue spritzing until the mixture holds its shape.

caking mixture for desired consistency


Place a pinch of dried lavender in the center of one half of the Stainless Steel Bath Bomb Mold.

lavender buds in mold


Fill both halves of the mold with bath bomb mixture and press it into the molds. You don’t need to press too hard – it helps the bath bomb halves stick together if some of the mixture is loose on top. Once both halves are full, press them firmly together.

fill first half of mold

fill second half of mold


Very gently, pull the top half of the mold away while twisting. It can be a little tricky to get the bath bombs to stick together, but practice makes perfect. To safely unmold the other half, place the top of the mold back on, flip the bath bomb over, and release the other side by twisting and pulling away gently.

opening mold


Place the bath bomb on the counter or in a container that will hold them in place without rolling away. We used the 6 Cavity Silicone Dome Mold. You can also use a large muffin tin or a soft surface like foam. Allow the bath bombs to fully dry and harden overnight. Once you’re ready to use, place in hot bath water and enjoy!

lined up bath bombs

final project

Tutorial credits

Photographer: Amanda Kerzman




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