Potassium sorbate is widely used as a preservative in all types of products across the pharmaceutical, food, and cosmetics industries. It is effective in its activity against molds, yeasts, and certain bacteria. However, its use should be limited to acidic matrices and the concentration must be kept below the legal limit to reduce the risk of cytotoxic and genotoxic activity. Used properly, potassium sorbate can help to improve the quality and safety of everyday products.