A detergent (as a noun)'s a material intended to assist cleaning. The term's sometimes used to differentiate between soap and other surfactants used for cleaning. As an adjective pertaining to a substance, it (or "detersive") means "cleaning" or "having cleaning properties"; "detergency" indicates presence or degree of cleaning property. Components Detergents, especially those made for use with water, often include different components such as: Surfactants to 'cut' (Emulsify) grease and to wet… (More on Detergents)