NCIt definition : A semi-solid composed of an oil in water emulsion, with lower viscosity than cream
or gel.;
Alternative definition : CDISC: An emulsion, liquid (1) dosage form. This dosage form is generally for external
application to the skin (2). Note 1: A liquid is pourable; it flows and conforms to
its container at room temperature. It displays Newtonian or pseudoplastic flow behavior.
Note 2: Previously the definition of a lotion was: The term lotion has been used to
categorize many topical suspensions, solutions, and emulsions intended for application
to the skin. The current definition of a lotion is restricted to an emulsion.;