1 cup baking soda
1/2 cup Epsom salt
1/2 cup cornstarch
1/2 cup citric acid (powder)
3/4 teaspoon water
2 teaspoons essential oils (lavender, eucalyptus, rose, etc.)
2 teaspoons basic oil (jojoba, sweet almond oil, coconut, olive or even baby oil)
A few drops of food coloring
A mold to shape the bath bomb
Optional: dried flowers or sugar cake decorations, like flowers or stars
Mix the dry ingredients — except the citric acid — in a large mixing bowl.Pour all liquid ingredients in a jar with a top. Close the jar and shake it vigorously.Pour the liquid mixture into the bowl of dry ingredients, and use your hands to combine it well.Add the citric acid. You’ll probably notice a slight fizzing reaction because of the citric acid. This is normal.Mash the mixture into your chosen mold very tightly. You may slightly overfill the mold and use a spoon or glass to press the mixture in as tightly as possible.Immediately loosen the bombs from their molds onto wax paper and let them dry overnight. Before use or wrapping, let the bath bombs dry for another day or two.
I found a bath bomb recipe on Byrdie’s website and decided to try it out for myself.
The ingredients are all easy to find. Containers of citric acid are available at Walmart, and I found the heart-shaped mold scattered in the aisle of Valentine’s decor.
I chose to use jojoba oil and lavender essential oil for my bath bomb, mostly because I already had both. I also used way more than “a few drops” of food coloring but too much food coloring doesn’t have any negative effects. I also couldn’t find an available jar with a lid at the time I was making this, so I threw it into a measuring cup and whisked it together.
At first, it looks like way too little liquid for the number of dry ingredients it’s mixing with, but the oils do a great job holding everything together. Hand-mixing is the most fun part. If you’ve ever had an intrusive thought telling you to stick your hands straight into the cake batter, the hand mixing does a good job filling that urge. The goal consistency is that of wet sand.
Once everything is mixed it’s crucial that no water gets near your bath bombs until they’ve fully dried over the course of a day or two. Water too soon after shaping will dissolve the bath bomb into a sad, bubbly puddle.
I think dried flowers would’ve been a great addition to my bath bombs because they have such a pretty effect when they’re dissolved in the water. But at the time, dried flowers seemed too hard to get ahold of so I opted out.
I didn’t think that far ahead when I started making these and I honestly didn’t expect to get more than one bath bomb out of the mix. I got a total of three, which I find pretty impressive considering how large of a mold I used.
If only I actually had a bathtub to test these out in.