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How To Make Fall Bath Bombs

How To Make Fall Bath Bombs

Pumpkin Spice must be everybody’s favorite fall scent. In this tutorial I’ll show you how to make fall bath bombs that you can share as a gift or just keep in your own home.

This tutorial was made by me and sponsored by iHerb. All the ingredients you need to make this tutorial are available for purchase on their website.

If you want to purchase these ingredients at iHerb don’t forget to click here for a discount.

This isn’t just any basic bath bomb recipe. I’ll show you how to make the ultimate fall scented bath bombs, with a fizzing PSL scented coat and a pumpkin pie scented bath melt core.

This tutorial requires a few ingredients you don’t normally see in my usual bath bomb recipes. Let’s break them down one by one.

Cream of tartar

The base of any bath bomb recipe is a combination of baking soda and citric acid. When you add a large amount of water to this (for example in your bath tub) both powders will start to react with each other and fizz. Creating the typical fizzing effect we all know and love.

Cream of tartar creates air bubbles in water, where as citric acid creates fizz.

That’s why to this mix I’m adding cream of tartar. I’m using it as an alternative to corn starch, which is commonly used a filler in bath bombs.

The use of a filler is not just to keep costs low. It also makes sure your bath bombs won’t ‘go off’ and fizz prematurely.

I’ve made bath bombs with cream of tartar before as a substitute for citric acid. And in this case I’m using both.

This combo creates a unique reaction when you drop it into your bath water.

Sunflower Lechitin

With the addition of a bath melt inside this bath bomb an emulsifier will help the butters and oils from the bath melt disperse into the water evenly.

I’ve never used lechitin powder as an emulsifier before, but I wanted to try it out as a natural alternative to polysorbate80 and other commonly used emulsifiers.

In this recipe sunflower lechitin is used as a vegan emulsifier. It helps oils dissolve into your bath water.

The sunflower lechitin powder helps mix them into the water and stops the butters and oils from instantly floating on top. And, more importantly, from clinging to the sides and bottom of your bath tub.

I would still advise you to use caution when getting in and out of your bath tub as bath projects can always make your bath tub somewhat slippery.

But the lechitin should definitely help reduce the greasiness!

Mango Butter

The bath melt core is a wonderful addition to this otherwise plain (although lovely scented) bath bomb.

For the bath melt I’m using a mixture of Shea butter, mango butter and pumpkin seed oil.

Shea butter is a lovely skin butter that’s great to have in your stash. In this recipe it serves as the base.

Mango butter has a drier feel and, surprisingly, doesn’t smell of avocados.

That’s why I love to use mango butter as well. It helps cut through the greasiness of the Shea butter.

The third ingredient of my bath melt is pumpkin seed oil, which might not surprise you since this a pumpkin spice latte inspired bath bomb tutorial!

Once you’ve made your PSL inspired bath bomb wrap it into some fall inspired packaging and give as a gift to a lucky receiver.

Or you can leave them out on display in your bath room and have them fill the air with their wonderful pumpkin spice aroma!

Fall Scented Craft Projects

If you want to make your house/next bath project/etc. smell like fall, you’ll probably use either essential oils or fragrance oils.

I talk more in-depth about different scent options in my article listing 12 scents for fall.

You can readily buy fragrance oils that are already called ‘pumpkin pie’ or ‘pumpkin spice’.

But if you want to take a more natural approach essential oils are the way to go.

Some brands sell pre-made blends so you might find a ready-to-go blend that suits your needs.

However, if you want to start mixing your own essential oils you’ll have to start from scratch.

There are many different ways to make your own blend. You can look at the original ingredients. For pumpkin spice that would traditionally be cinnamon, clove, ginger, nutmeg and allspice.

However, since essential oils are very concentrated and pack a punch all on their own, it can be hard to balance all of these scents when you mix them together.

Another thing to consider is that not all fruits, nuts and seeds have essential oils that are commonly known and readily available. Take ginger, allspice and nutmeg for example.

That’s why I took a different approach when making this blend. I followed my own sense of smell and trusted my gut.

Pumpkin Spice Essential Oil Blend

To me a pumpkin spice mix smells like cinnamon, for sure. It also has some sweet notes and an earthy undertone, probably from the clove buds.

That’s how I came up with this combination of essential oils:

  • Cinnamon Essential Oil: the base of this blend as it instantly makes you think of fall baking.
  • Vanilla Essential Oil: Nothing says sweet like vanilla.
  • Cedarwood Essential Oil: I wanted something to cut through all of that sweetness and Cedarwood was a lucky guess. I gathered all of my ‘earthy’ smelling essential oils like clary sage and patchouli and eventually felt that cedarwood paired the best with the other oils.
Pumpkin Spice Bath Bomb Recipe
Yield: 1 LUSH size bath bomb or 3 regular size bath bombs

Pumpkin Spice Bath Bomb Recipe

Here's a tutorial for a bath bomb inspired by everyone's favorite fall scent - pumpkin spice.

This bath treat is coated in a layer of pumpkin pie spices and has a hidden bath melt inside that smells of fall thanks to a unique blend of natural essential oils.


Bath Bomb Ingredients

Hidden Bath Melt Inside (Optional)

Pumpkin Spice Essential Oil Blend (Optional)

  • 10 drops cinnamon essential oil
  • 5 drops cedarwood essential oil
  • 5 drops vanilla essential oil


  • Large mixing bowl
  • heatproof bowl
  • spoons for mixing
  • measuring cup or scale
  • bath bomb moulds - see note 6


Prepare bath bomb mixture

  1. Combine baking soda, citric acid and cream of tartar into a large mixing bowl. Stir with a spoon until all the ingredients are evenly distributed.
  2. Add pumpkin spices and sunflower letchitin to the bowl. Stir to combine all the ingredients together, keep stirring until the mixture has an even color. Set aside.

Make hidden bath melts

  1. Scoop shea butter and mango butter into a heatproof container. Melt the butters together using short intervals in the microwave or by using the double boiler method.
  2. Once melted stir the mixture slowly to make it cool down somewhat.
  3. As soon as the mixture has cooled down considerably but is still liquid you can add the pumpkin seed oil and essential oils. Stir well until all the ingredients are well combined.
  4. Set aside to cool. This can take up to an hour. To speed up the cooling down process you place the mixture covered in the fridge or freezer.

Assemble your pumpkin spice bath bomb

  1. Return to the large mixing bowl with the dry bath bomb ingredients. Spray the mixture lightly with the rubbing alcohol, vodka or witch hazel.
  2. Keep stirring the mixture while you spray. The purpose behind this liquid phase is to make the mixture clump together and have it hold together while it sets. If the mixture starts to fizz in the bowl you've added too much liquid. If this happens, keep stirring vigorously until the fizzing stops. If this doesn't help add small amounts of baking soda or cream of tartar. You know the mixture is ready when you press it together (in the palm of your hand or with the back of the spoon) and doesn't fall apart like a powder.
  3. Scoop the mixture into both sides of the mold without pressing it down.
  4. Take the bath melt mixture out of the fridge or freezer. Shape the mixture into a ball with a spoon.
  5. Once both sides are full make a dent in one of them to make room for the bath melt. Scoop the bath melt mixture into the dent.
  6. Cover the bath melt mixture with more of the bath bomb mixture. Keep going until both molds are overflowing. Push both sides together.
  7. Keep both sides tightly sealed. Leave overnight or until fully set. If they won't come out of their moulds, you can carefully tap it with a spoon.


  • You can substitute cream of tartar with corn starch or leave it out.
  • I added pumpkin spice mix to the dry ingredients for a hint of color. I've noticed however that the powder floats in your bath water and sticks to your skin and the edges of the tub. You can use a teaspoon of mica powder for a similar pop of color and a less 'messy' experience.
  • The lecithin should help mix the oils of the bath melt into the water. This was my first time using lecithin in a bath bomb recipe and I've found the clean up a lot easier! The oils will still float to the sides of your tub, but they came off easily when rinsing it off, in my opinion.
  • If you want to leave the lecithin out I also recommend to leave the bath melt out. You can add 1 tablespoon of oil to the dry bath bomb mixture instead if you want to give your bath bomb a moisturizing boost.
  • To shape your bath bomb you'll need to add some liquid to the dry ingredients to make it hold together. Since alcohol evaporates I like to use rubbing alcohol or vodka so you don't introduce too much liquid into the mixture. Another popular choice is witch hazel. Considering the large amount of citric acid, this product doesn't require an additional preservative and you could also use a small amount of water.
  • Although this giant LUSH sized bath bomb is a lot of fun, it's a little excessive for a regular bath. I suggest dividing the mixture over 2, 3 or more smaller moulds to get more fun out of them! I love to use plastic Christmas ornaments that I reuse multiple times.
  • Oils and butters can still make your bath tub slippery! Please be careful when getting in and out of your tub.

Recommended Products

This post is sponsored by iHerb and this bath bomb recipe was uniquely created for them. I might receive a small commission when you click on one of the links redirecting you to the ingredients available for purchase on their website.

If you like it, than don't forget to put a pin on it!

Did you make this project?

All of the ingredients you need for this tutorial can be found on iHerb.

iHerb sells over 30 000 natural products. Another plus for me is that they ship to over 180 countries, including mine. It’s also reassuring to know that they provide 24/7 customer service in 10 languages.

When you order butters and oils there’s always a risk that they might melt during transport. Especially with the heatwaves we’ve been having recently.

Luckily iHerb ships their products from climate controlled distribution centers and the products arrived in pristine condition!

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