Nanoemulsions are made up of two immiscible liquids combined with emulsifying agents (surfactants and co-surfactants) to generate thermodynamically stable single phase and colloidal dispersion systems. The persuasion method and the Brute force method are both used to create nanoemulsions. Entrapment efficiency, particle size, polydispersity index, zeta potential, and other characterization techniques for nanoemulsions include differential scanning calorimetry, Fourier-transform infrared spectroscopy, and transmission electron microscopy. In vitro drug release, in vitro permeation, stability and thermodynamic stability, shelf life, dispersibility, viscosity, surface tension, refractive index, % transmittance, pH, and osmolarity are all studied further. This review seeks to give collected information on various nanoemulsion formulation and characterization techniques.
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