Sub-micron emulsions have a number of unique functional attributes that have led them to be utilized within an increasing number of industrial products, including foods, pharmaceuticals, cosmetics, personal care products and chemicals. Due to their size characteristics, sub-micron emulsions are expected to maintain high stability against creaming and coalescence. Since they display large interfacial area/volume ratios, a sufficiently high concentration of surfactant (i.e. emulsifiers) has to be added to enable the new surface area developed by nano droplets to be rapidly coated during the emulsification process (Mason, Wilking, Meleson, Chang, & Graves, 2006); this should avoid or limit shear and turbulence-induced coalescence, and ensure higher physical stability of emulsion for a long period of time.