Mix baking soda, cream of tarter, SCI powder together thoroughly. Break up all clumps.
Add water and mix throughly.
Add oil + fragrance oil. Mix evenly until fully incorporated.
Add citric acid, mix throughly.
If adding in any colorant, now is when you would add it.
Should feel like damp sand and hold shape when squeezed
Pack a little into each side of the mold tightly, then lightly pile up more on each side of the mold so its slightly overfilled.
Press firmly the two sides of the mold together with steady pressure.
Tap the back of each side of the mold to help release the bath bomb.
Holding the bath bomb mold in each hand gently pull apart one side at a time, until the entire bath bomb out of the mold.
Gently set the bath bomb on a tray
Work quickly because it will start to dry out, if that happens lightly spray bath bomb mixture or your hands with distilled water and mix it in quickly to prevent fizzing.
Dry 24–48 hours
After at least 48 hours they should be hard enough to wrap.
