Potassium sorbate is highly effective as an inhibitor of mould, yeast and fungi growth and is therefore widely used as a preservative in food production. Also known as E202, it is a common ingredient in soft drinks, cheese, yogurt, dried meats, dried fruit, baked goods and more.

Manufacturers of personal care products also commonly use potassium sorbate to inhibit growth of microorganisms in products like face creams, moisturisers and foundation make-up. The compound is often used to extend the shelf life of these products in place of parabens.