Citric Acid is an organic acid that is a component of all aerobic living organisms—most abundantly, and not surprisingly, in citrus fruit. This weak acid has been used as an additive in processed foods for more than 100 years as a natural food preservative. By increasing acidity, the low pH conditions produced prevent bacterial and fungal growth, therefore prolonging the life of Aloe-based liquid dietary supplement. It also helps preserve flavor and maintains pH at a suitable level to prevent product degradation.