Different influences at the interface may cause changes in the composition of the near-surface layer.  Substances may either accumulate near the surface or, conversely, move into the bulk.  The movement of the molecules characterizes the phenomena of adsorption.  Adsorption influences changes in surface tension and colloid stability.  Adsorption layers at the surface of a liquid dispersion medium may affect the interactions of the dispersed particles in the media and consequently these layers may play crucial role in colloid stability The adsorption of molecules of liquid phase at an interface occurs when this liquid phase is in contact with other immiscible phases that may be gas, liquid, or solid