Citric acid plays a crucial role in the creation of bath bombs, acting as a key ingredient that initiates the fizzing reaction bath bombs are famous for. When citric acid is combined with baking soda (sodium bicarbonate) and comes into contact with water, it triggers an acid-base reaction. This reaction produces carbon dioxide gas, which forms the characteristic bubbles and fizz, adding a sense of fun and luxury to the bathing experience. Moreover, citric acid acts as a natural preservative, helping to extend the shelf life of the bath bomb, and as an exfoliator, aiding in the removal of dead skin cells.
The typical ratio for using citric acid in bath bomb recipes is about one teaspoon per cup of dry ingredients, ensuring a balanced fizzing action without being too aggressive.
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