**5. Conclusion**

Phase behavior of microemulsion is commonly assessed via laboratory study. These studies are straightforward but laborious especially when it involves a huge range of surfactant choices. Computational simulation is an alternative approach to provide insights into microemulsion phase behavior. There are limited computational simulation studies to predict surfactant phase behavior, whereby the widely used method since the beginning is empirical correlations as in QSPR approach. There are very few non-empirical approaches to predict surfactant phase behavior. These approaches are based on combination of physical chemistry of microemulsion surface tension, torque and bending rigidity concepts.
