Sodium Benzoate (Sodium Benzoate)

Sodium Benzoate is a widely used preservative in cosmetic formulations, valued for its antimicrobial activity, particularly against yeasts and molds, helping maintain product microbiological stability and shelf life. It is most effective in acidic to mildly acidic systems, so it is commonly found in water-based products such as toners, cleansers, creams, lotions, and gels, often alongside complementary preservatives or boosters (e.g., potassium sorbate, organic acids) to broaden protection. In addition to preservation, it can support overall formula robustness when pH and compatibility are correctly optimized. It is generally well tolerated, though very sensitive or compromised skin may experience occasional irritation depending on concentration and the complete formula.