Soapy Science: Citric Acid in Soap Making
Jul 06, 2019·How to Use Citric Acid Soap Making. We use citric acid to create a citrate in just about every recipe that we make. Remember, citric acid isn't the chelator, but rather the citrate, meaning the dissociated salt of sodium/potassium hydroxide and citric acid. The suggested usage rate in bar soap is approximately 1-2% of the total oil weight used.