Potassium Sorbate (Potassium Sorbate)

Potassium Sorbate is a widely used cosmetic preservative valued for helping protect water-containing formulations against microbial spoilage, particularly yeasts and molds. It is the potassium salt of sorbic acid and is most effective in acidic to mildly acidic systems, where it supports product safety and shelf life—typically as part of a broader preservative strategy designed to provide balanced coverage. Potassium Sorbate is commonly found in creams, lotions, toners, gels, cleansers, shampoos, and other rinse-off or leave-on products, as well as in “naturally positioned” formulations due to its favorable sensory profile and broad familiarity. Use level and performance depend on pH, formulation type, and compatibility with other ingredients, so formulators generally optimize pH and pair it with complementary preservatives and chelators to enhance efficacy and stability across the product’s intended conditions of use.