Koplactate Na is a 50% sodium lactate solution, the sodium salt of lactic acid obtained through fermentation. It is used in cosmetics as a buffering agent, pH regulator and humectant.

It helps maintain pH balance in formulations while supporting moisture retention. In cleansing systems, it contributes to formulation stability and can influence texture and lather characteristics.

Its water solubility and compatibility with various cosmetic systems make it a versatile ingredient for skin and hair care formulations.