JOURNAL OF COSMETIC SCIENCE 56 foam volume and stability of the formulas. Summaizing, it can be stated, that the skin refattening substance type has an important infl uence on the utililitary features. It is especially important, when one aims to create a recipe with certain properties and precise parameters. Progress in Surfactants-Innovations of the Last Five Years Heman G. Hauthal Leuna In recent years, a new dimension has been added to the criteria important for the use of surfactants such as cost effectiveness, synergy potential, ready and complete biodegradability, and skin tolerance: sustainability. New concepts like »green« or »natural« surfactants and the »footprint« (impact on the CO2 balance) of surfactants dominate the scene. Renewable raw materials for surfactants are becoming more important on the grounds of a more favourable CO2 balance. Sustainability can be achieved through raw materials as well as products and processes. Continuous development of knowledge of the fundamentals of surfactant action contributes to the more effective use of these functional specialty chemicals. GTL technologies will supplement the raw material base for surfactants in the medium term. Green surfactants and sustainable technologies such as enzyme catalysis will be used particularly in the cosmetics sector. Everyone of us encounters surfactants almost every day in the form of household and body care products. Surfactants are also indispensable in institutional and industrial cleaning and as process chemicals in many branches of industry.

J. Cosmet. Sci., 60, 57–83 (January/February 2009) 57 Papers Presented at the 2008 Annual Scientifi c Meeting and Technology Showcase (Thursday’s Program) December 11–12, 2008 New York Hilton New York, NY