Why Are My Diy Bath Bombs Expanding. In the process of making your DIY bath bomb moisture from water could trigger baking soda to react with citric acid. The correct amount of moisture is crucial to a firm yet moldable bath fizzy.
If this happens there wont be enough fizz left for your bath itself. Water will activate your bombs and salt will pull moisture and expand the bombs as well. Avoid making bath bombs on rainy days.
Bath bombs fizz as a reaction to water so if your bath bomb is fizzing out of the mold it came into contact with water or your mixture is too wet.
Use 90 rubbing alcohol as a binder instead. Citric Acid This acid is the main ingredient why your bath bombs fizz. The reason bath bombs crack is because of too much moisture. The smell will dissipate and help harden.
