Looking for to make diy bath bombs with natural ingredients but without cornstarch? Then you’re in the right place! These bath bombs are similar to the other bath bomb recipe on my blog, but without the corn starch.

These homemade bath bombs make a great gift or to use as your own bath bombs during a relaxing, warm bath. My kiddos love them too because the citric acid creates a fizzy reaction when added to your hot water. It’s also a fun project to include them in on.

dry brush and homemade bath bombs without cornstarch sitting on wooden cutting board

why use create your own natural bath bombs?

The fun thing about creating your own bath bombs is that you can customize the essential oils you put in them for their health benefits. This simple bath bomb recipe does not use artificial ingredients like some store-bought versions. Some ideas for using your bath bombs are:

Sore Muscles – Wintergreen, peppermint, and lavender essential oils
Relaxing – Chamomile, vetiver, and lavender essential oils
Congestion – Eucalyptus and peppermint
Citrus – Bergamont, orange, and lemon
Lavender – dried lavender and lavender essential oil

Bath Bomb Ingredients

Baking Soda
Baking soda is the backbone of any bath bomb recipe. It not only gives the bath bomb its structure but also reacts with citric acid to create that iconic bath bomb fizz we all love. Plus, it’s gentle on the skin, making it a great base for a soothing soak.

Citric Acid
This is the magic ingredient that makes bath bombs fizz! When citric acid meets water, it reacts with the baking soda to create bubbles and release your favorite essential oils into the bath, transforming your soak into a spa-like experience.

Arrowroot Powder
Arrowroot powder is a great alternative to cornstarch, helping to soften and smooth your skin. It also helps bind the dry ingredients together without interfering with the fizzing reaction.

Carrier Oils (like coconut, jojoba, or almond oil)
Carrier oils add nourishment to your skin and ensure that your bath bomb doesn’t leave you feeling greasy. Choose your favorite oil to create a gentle, hydrating layer in the bathwater.

Essential Oils
The fragrance of your bath bomb is all about personal preference. While some recipes use fragrance oils, I love sticking to my favorite essential oils like lavender, eucalyptus, or citrus blends for a natural, aromatic touch. These not only smell amazing but can also provide therapeutic benefits, depending on the oils you choose.

Water or Herbal Tea
Water is essential to activate the fizzing reaction, but you can also use herbal tea (like chamomile or peppermint) to add additional skin benefits and soothing properties. It also helps to bring your bath bombs together when spritzed onto the ingredients.

Food Coloring (optional)
Some people like to use mica powder to color their bath bombs. Make sure to check which ones you use in your DIY bath bomb recipe, as some can stain your bathtub after soaking.

3 bath bombs made without cornstarch sitting on a wooden cutting board with purple flowers and green leaves around them

Helpful tools to have to make bath bombs without cornstarch

large and small bowl
bath bomb molds – you can buy silicone molds or a stainless steel mold
wooden spoon or whisk
an airtight container – a dry place to store your bath bombs in after you make them.
melted coconut oil – this isn’t to be added to the main ingredients of a bath bomb, but it’s a helpful tip for making them! You can lightly coat your mold with a small amount of oil or cornstarch before adding your bath bomb mixture. This prevents the mixture from sticking to the mold, making it easier to release your perfectly shaped bath bombs.
spray bottle – I’ve found that spritzing your bath bomb ingredients with water or witch hazel works better to bring together your ingredients

Need a gift idea? you may like…

diy body butter, diy sugar scrub, and diy christmas soaps behind words "diy gifts for crunchy friends and moms"

how to make your own fizzy bath bombs without corn starch

Ingredients

1 cup baking soda (for fizz & skin softening)
1/2 cup citric acid (activates the fizz)
1/2 cup arrowroot powder (softens skin & binds ingredients)
2 ½ tbsp carrier oil (like coconut, almond, or jojoba oil)
3/4 tbsp water (or herbal tea for extra benefits)
20 drops essential oil (lavender, peppermint, eucalyptus, etc.)
Optional: Natural mica powder or dried flowers for decoration

Directions

In a large bowl, whisk together baking soda, citric acid, and arrowroot powder.
In a separate small bowl, mix carrier oil, water, and essential oils.
Slowly drizzle your carrier and essential oils into the dry mixture while stirring constantly to avoid premature fizzing.
Spritz your mixture with water as you use your hands to mix everything together, but without it fizzing.
Once the mixture holds together like damp sand when squeezed, pack it tightly into bath bomb molds.
Let them dry for 24 hours in a cool, dry place before using.
Drop in a hot bath and enjoy!