Abstract
Nano-emulsions, as non-equilibrium systems, present characteristics and properties which depend not only on composition but also on the
preparation method. Although interest in nano-emulsions was developed since about 20 years ago, mainly for nanoparticle preparation, it is in the
last years that direct applications of nano-emulsions in consumer products are being developed, mainly in pharmacy and cosmetics. These recent
applications have made that studies on optimization methods for nano-emulsion preparation be a requirement. This review is focused on the most
recent literature on developments of nano-emulsions as final application products and on the optimization of their preparation.
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