What you need
1 cup baking soda
1/2 cup citric acid
1/2 cup cornstarch
1/4 cup Epsom salts
2 tbsp melted coconut oil
1/2 tsp essential oil blend desired (or strawberry flavoring oil)
2 tsp rubbing alcohol
3/4 tsp deep red mica powder
1 tbsp activated charcoal
2-4 tablespoons Halloween sprinkles blend (I used: Goodtime Sprinkle Mix)
Whisk together the baking soda, citric acid, cornstarch and epsom salts.
In a second bowl, combine the melted coconut oil, essential oil blend and alcohol together, mixing well.
Add liquid ingredients 1 tsp at a time to the dry ingredients, mixing it together slowly so as not to start the fizzy reaction.
Separate about 1/2 of the bath bomb mixture into a second bowl. To this bowl of bath bomb mixture, add in the red mica powder and mix well. If you want more color, add some additional mica powder in 1 tsp increments.
To the other bowl of bath bomb mixture, add in the activated charcoal powder and mix well. If you want more color, add some additional charcoal powder in 1 tsp increments.
Dust the bottom of one side of one of the bath bomb molds with cornstarch. The sprinkle side tends to come out on its own, so do not bother to dust that side with cornstarch.
Place about 1 tsp of sprinkles in the non-dusted side of the bath bomb mold.
Immediately pack the bath bomb mold with the sprinkles overly full of the red mixture. You want there to be excess mixture to help bond the two sides of the mold together.
To the cornstarch dusted half of the bath bomb mold, fill it about 1/2 full of red bath bomb mixture, then finish filling it with the black mixture, overfilling as with the other half of the bath bomb.
Press the two sides of the bath bomb mold together, grinding and pressing them to force the two together.
Allow the bath bombs to rest in the mold for up to 24 hours before gently tapping the side of the mold to release the bombs.
Use your bath bombs immediately or store in an airtight container until you’re ready to use!