What is the function of a surfactant in hair care products?

The function of a surfactant in hair care products is primarily to cause lather and clean surfaces. Surfactants are compounds that lower the surface tension between two substances, which enables them to mix more easily. In hair care, surfactants help to lift dirt, oil, and impurities from the hair and scalp, making it easier to wash them away. When you use a shampoo or cleansing product that contains surfactants, they interact with water and create foam or lather, facilitating the cleaning process. This action is essential for removing buildup and ensuring that the hair remains clean and healthy.

While thickening agents, coloring agents, and conditioning ingredients are important for other aspects of hair care, they do not serve the same cleansing purpose as surfactants.