Citric Acid (Anhydrous- powdered) is a tricarboxylic acid found in citrus fruits. Citric acid has a wide range of uses including pharmaceutical preparations due to its antioxidant properties. It maintains stability of active ingredients and is often used as a preservative. It is used in Periogen to balance pH and ensure thorough mixing of other ingredients.
Citric acid is used in Periogen rinse concentrate and toothpaste