Surfactants are ubiquitous ingredients in the whole range of home and personal care products. Their adsorption and self-assembly properties are the key characteristics which determine their performance. In recent years the neutron scattering techniques of neutron reflectivity and small angle neutron scattering have transformed our understanding of surfactant adsorption and self-assembly at a molecular level. The impact of those neutron scattering techniques will be illustrated with some recently published examples which apply across the range of home and personal care products. In the examples described particular emphasis is placed on the drive towards greater sustainability and reduced environmental impact.