Start by adding a dusting of activated charcoal and mica to the bottom of each cavity of the silicone mold - a little goes a long way.
Combine the baking soda and citric acid in a small mixing bowl, then add the essential oils.
Using your hands or a small spatula, add in just a little water at a time and mix. You’ll be able to feel the consistency go from a grainy powder to a wet smooth sand consistency that will hold its shape when you press it together.Quickly press the mixture into the molds, making sure to push all the way down on each one so the finished fizzies will hold their shape.
Allow your soothing bath fizzies to dry for 12-24 hours. The amount of time it takes will simply depend on the humidity and size of the molds. The bath fizzies are ready when they feel hard, dry and maybe a little brittle to the touch. They should pop right out of the molds. Store them in an air tight container until ready to use.
How to Use
Draw a warm to hot bath and add 2-4 charcoal bath bombs, depending on the size of you tub. Soak for about 20 minutes.