Bath bombs’ primary ingredients are a weak acid and a bicarbonate base. These are unreactive when dry, but react vigorously when dissolved in water to produce their characteristic fizzing over a period of several minutes. This is an acid-base reaction that involves conversion of citric acid and sodium bicarbonate to sodium citrate and carbon dioxide:
Although bath bombs are well tolerated by many people, some additives such as fragrances and dyes can cause irritation. Common skin irritants and allergens found in bath bombs include limonene, linalool and sodium lauryl sulfate. The main ingredients – citric acid and sodium bicarbonate – are generally not considered as skin irritants when used in bath because of significant dilution in water. That’s why Relaxcation does not use any harmful additives in the production of bath bombs. Our bath bombs are all natural and safe!