Potassium Sorbate (Potassium Sorbate)

Potassium Sorbate is a cosmetic preservative primarily valued for its antifungal activity, helping inhibit the growth of yeasts and molds and thereby supporting product microbiological stability. It performs best in acidic to mildly acidic formulations, so it is commonly used in water-based products such as toners, cleansers, gels, creams, and lotions, often paired with other preservatives or boosters (e.g., sodium benzoate, organic acids) to extend protection across a broader spectrum. Beyond preservation, it can contribute to overall formula reliability when pH is properly controlled. It is generally well tolerated, though in sensitive skin types it may occasionally cause mild irritation depending on use level and the complete formulation.