A close scrutiny of all the different cases summarized in Table reveals, unsurprisingly, that the interfacial tension decreases with the average area per molecule. The interfacial tension of the oil water interface containing 100 ppm of surfactant, as measured by the Du Nuoy ring method, is about 14 mN/m (Table ) , although a lower value (7.5 mN/m) was obtained with a drop vibration technique. These values can be compared and contrasted with what is obtained in the current simulation. The interfacial tensions of the two emulsions and the vesicles are significantly lower than that of the flat interface, suggesting that the surfactants have organized more tightly in such structures than that at the flat interface, which is a thermodynamic necessity in that the interfacial tension would tend to be as low as possible within the available entropic constraints. What this scenario prompts is the question: what happens when these, presumably, kinetically formed selfassembled units of lower interfacial tension come into contact with the oil-water interface having a higher interfacial tension? If they fuse, the surfactants of these structures would tend to spread at the interface causing a local Marangoni instability. The resulting perturbations could either decay quiescently or violently producing shock waves propagating along the interface. These could have important consequences in the evolution of the subsequent structures. This issue is related to the formation of oil-in-water emulsion at it might happen when an inverted emulsion crosses the interfacial barrier via a singular transformation of one phase into another, which is, otherwise known as phase inversion .