Potassium lactate is a salt formed from potassium and lactic acid. It is commonly used as a food additive, particularly as a preservative, acidity regulator, and humectant. In food processing, it helps extend shelf life by inhibiting the growth of bacteria, especially in meat and poultry products. It also assists in maintaining moisture, improving texture, and enhancing the flavor profile. Additionally, potassium lactate has applications in cosmetics, where it’s used for its moisturizing properties.