and liquid crystalline phases, not only influence the physical characteristics of formulated products but also play a crucial role in enhancing their efficacy. By manipulating the surfactant chemistry, adjusting the formulation composition, or changing the external conditions, one can control the nature of the resulting self-assembled structures and in doing so tailor, for example, the viscosity, stability, and texture of formulations, thereby creating effective and economical products. However, when choosing a surfactant, formulators can be faced with a difficult optimisation challenge. The surfactant must be safe to use, environmentally friendly, high performance and low cost.