Before you begin, pick some appropriate moulds to make your bombs in. I usually use rubber ice cube trays as this makes them easy to pop up, but this time I used a plastic tray designed for holding shot glasses. I coated the tray with cling film, to ensure I'd be able to get the bombs out easily.
Crush together the baking soda and dried flowers using a mortar and pestle.
Pour the witch hazel in to a spray bottle and add the lime juice and essential oils. Shake together.
Place the baking soda in to a bowl and then spray with the witch hazel, mixing while you spray.
When the mixture begins to stick together, take a spoonful and compact in to the moulds. Leave the bombs to dry out, this may take a couple of days and then they're ready to use!