How I Created The Best Bath Bombs Ever!

How I Created The Best Bath Bombs Ever!

When I first started my company, I didn’t have bath bombs in mind as a product we would sell. But as I dove deeper into skin care and bath products, I decided I had to give it a go!

Little did I know at the time, but it was going to be much more difficult than I had anticipated!

When I first formulated my bath bombs, I researched tirelessly online. I tried to find videos about how people made bath bombs, what ingredients I would need, and how to actually mould them by hand.

My first bath bomb was a total and utter failure, and for so many reasons:

1. I couldn’t mould my bath bombs so that they stayed stuck together!
2. I couldn’t land on the right balance of oils.
3. Some bath bombs became too hard, so they wouldn’t float.
4. Some became too soft and immediately crumbled when I touched them.
5. They didn’t smell nice enough.
6. They didn’t have the right amount of colour.
7. Haha…as you can imagine, I can go on and on…

It took me months of many late nights and a lot of wasted ingredients before I finally created my own set of bath bomb recipes that worked for me!


But I had forgotten one of the most important ingredients…a foaming agent. I knew I had to add a foaming agent in my bath bombs because it is the key ingredient that makes bath bombs so amazing, but with all the negative media about certain foaming ingredients (i.e. SLS) I had to once again get back to the research.
“Best bath bombs ever” – but don’t take our word for it, check out what our customers post on Instagram!
I invested heavily into understanding exactly what foaming agents were available, which was the safest to use, and why SLS had such a bad reputation.

[Side note] For those of you that don’t know what SLS is… It is “Sodium Lauryl Sulfate” and it’s the main ingredient that’s in almost all supermarket soap, many of our competitors’ products, and in so many skin / bath products worldwide. It is the ingredient that contributes to most of the foam production and beautiful lather that everyone wants from their soap or body washes!

SLS is a synthetic ingredient made from either petroleum or vegetable oils (like palm oil).

  • SLS made from petroleum is controversial based on the fact that it’s associated with pollution and green house gas emissions.
  • Other concerns over SLS is that, with long term use, it has allegedly been connected to irritation of the eyes, skin, and in extreme cases even lungs.
  • During the production of SLS, there is a small chance that it can be contaminated with chemicals that are again allegedly linked to cancer (this is one of the biggest reasons it has gained a negative reputation).
  • SLS made with palm oil is controversial due to its association with the destruction of rainforests.
  • When products with SLS are washed down the drain they can have a negative effect on aquatic life.
  • Many products that contain SLS are tested on animals to see the level of irritation caused!

As you can see there are many reasons that SLS continues to be under scrutiny. I understand some of them are not factual (til today there has been no concrete evidence that SLS directly causes cancer – or you wouldn’t find it in so many products at your local supermarket). However, for myself and the team at Bath Box, the risk of using an ingredient that contribute to animal cruelty, destruction to the environment, or even has a minor risk of contamination, is enough to look for an alternative!

The entire team at Bath Box uses all of the products we make, so you can be assured that everything is high quality, safe, and simply amazing (or we wouldn’t use it ourselves)!

Anyway, after finding out all of this information, it made me really question the products I was using in the past (all the “big brands”, our competitors’ products, and even the stuff you can find at your local supermarket). And I was very excited and motivated to make my products different to these.

It all started with the decision to refrain from using SLS (Sodium Lauryl Sulfate).
Yup…more reasons we have the best bath bombs!
The alternative ingredient I used to create the foaming / lather effect (after a lot of research and testing) was Sodium Cocoyl Isethionate (SCI) in a powdered form. It is another surfactant, however unlike SLS, it is incredibly mild. It’s so mild in fact that it is often referred to as “baby foam” and used in many bath products for children (have a Google and see for yourself!).

SCI is derived from coconut oil and safe to use on your skin. It is biodegradable and there is no risk of cancerous chemicas contamination.

The other ingredient I have opted to use is a liquid surfactant called Sodium Lauroyl Sarcosinate. Although the acronym is also SLS, this is NOT the same as Sodium Lauryl Sulfate. They are very different compounds, and Sodium Lauroyl Sarcosinate is also derived from coconuts. Studies show it is not an ecological or environmental hazard, and doesn’t have any bio-accumulative properties. No cancerous chemicals have been detected in the final products either.

Click here to read more about the surfactants we use, and why we use them!

After all this research I was so happy that I could sleep soundly knowing that my products don’t contribute to many of the negative problems that other skin and bath products do. All while still providing our family of customers bath bombs that create colour explosions, smell beautiful, and feel so silky smooth on your skin. Thank you to everyone who has tried our bath bombs so far, and for the hundreds of positive feedback emails, reviews, and Instagram photos!


I am always researching and looking for ways to make our products better and more natural.

We have also made two changes to our bath bombs since I originally launched them. I have added a range of bath bombs that contain essential oils instead of fragrance oils. Essential oils are a natural alternative to fragrance oil. Essential oils are formed by a process called steam distillation, which is where plants are suspended over boiling water and the steam pulls the oils out of the plant. Essential oils are not only fragrant but many essential oils help with a variety of aliments. They can be used in aromatherapy for relieving stress or even help relieving itchy skin or acne. So they were a perfect addition to my bath bombs.

I also changed from using only mica powder to using dyes as the colourants in my bath bombs. These dyes are synthetic, but are water soluble so it eliminated the issue of stains appearing in your bath tub. Some times adding synthetic ingredients are necessary to make a product perform at a higher potential. It’s only important to make sure these ingredients are safe, and the dyes we use in our bath bombs are FD&C approved. FD&C is the food, drug, and cosmetic act which mandates that manufactures show that their ingredients are safe before they are allowed to be sold to the public.


Our bath bombs are currently at 250 grams each, which is massive! Just so you understand, most bath bombs you can find from other sellers (online and in stores) range between the 80 gram and 150 gram weights. This means you can definitely break our bath bombs into smaller pieces to get more uses out of them!

But because we are constantly listening to your feedback, we added another range of bath bombs that were a little smaller and cost effective.

Many of our soap bars and other products will soon be switching from perfume or fragrance oils to natural essential oils, which is really exciting. Essential oils can be expensive but offering products that contain more natural ingredients is the path we will continue to take.
I always like to take every opportunity to thank all of our customers for supporting us, I wouldn’t be where I am today without you. I hope everyone gains a deeper insight into Bath Box, what we stand for, and how we came to be what we are today. 🙂
Hannah xo
Bath Box Co-Founder & Product Manager
Liquid error: Could not find asset snippets/relatedblogs.liquid