Not using a circular mold? No problem! A silicone ice tray works too! To use this method, add the bath bomb mixture to each ice cube mold, flattening it down so the tops are smooth. You should ...

Overfill two halves of the bath bombs mold, press together, and give a quick twist. Allow the mixture to set in the mold for 1 hour, then you can unmold and allow to set overnight to completely ...