Surfactants are ingredients primarily found in which type of product?

Surfactants, or surface-active agents, are compounds that lower the surface tension between two substances, such as oil and water. They are crucial in emulsions because emulsions are mixtures of oil and water that need stability. Surfactants help to disperse the oil droplets in the water phase, creating a stable and uniform mixture that can effectively deliver active ingredients to the skin.

In formulations, surfactants play a vital role by ensuring that the ingredients blend well and remain mixed over time, which is essential for the efficacy and consistency of emulsion products. Emulsions include creams and lotions, which are commonly used in skincare for hydration and treatment purposes. While surfactants can also be found in other types of products like gels and foams, their primary and most significant role is in emulsions, making this the most accurate option.