The role of colloidal structures in topical formulations emulsions which involved oil, water, surfactant will be discussed in addition to the different association structures phases that might form over time. The evaporation process after application and chemical potential is a very important factor to be included in many applications. Recent examples are fragrances and antiaging products.

These works extended single fragrance components to examine complex mixtures. Where different chemical functionality affects polarity and therefore solubilization . While some components in fragrance oil are driven off by water at higher temperature on the other hand vapor pressure of fragrance oil affected by presence of liposomes.

Antiaging works examined how the formulation can affect the activity of antiaging ingredients, which Control of the production of crystalline acid in the residue after evaporation and Irritation effects may be controlled by the end stage of the emulsion.