Shampoo and Conditioner Science 84 As the surfactant concentration is increased further and/or dissolved salt concentration is increased, the surface of the micelles becomes less curved until the large planar aggregates of lamellar phase are formed (Figure 9). Modern shampoos consist essentially of entangled worm-like micelles and conditioners are usually in the form of lamellar phase. In summary, shampoo and conditioner formulation essentially involves the preparation of surfactant mixtures that possess the Figure 8. Rod-like micelles can pack into hexagonal liquid crystal phase. Figure 9. Increase in surfactant concentration causes micelles to transition from spheres to rods to hexagonal phase to lamellar phase to inverse hexagonal phase to inverse micelles.