This course introduces the composition, methods of production and characterization, and uses of colloidal systems, including suspensions, emulsions, foams, aerosols and gels. The thermodynamic-based and kinetic-based theories of colloid formation and stability are introduced. The hydrodynamics of colloids and complex fluids is also discussed along with the connection between colloid composition, its rheological properties, its mass transfer properties and the connection between these properties and the performance of colloid-based products. The course will also introduce fundamental concepts towards characterization emulsion structures using light scattering, microscopy and spectroscopy. Finally, the chemistry and formulation principles of colloid-based products is also revised, in particularly the selection of solvents, surfactants, and polymers required.