The project "Organic for surfactants (O4S)" aims to develop a sustainable alternative for surfactants produced chemically and mostly from crude oil. Under the leadership of Dr. Ana Lucia Vasquez-Caicedo (Fraunhofer IGB), sustainable biological surfactants are to be produced which meet market requirements and can be certified as biologically produced at the same time. The interdisciplinary project includes work along the entire process chain: from the provision of suitable organic raw materials, preferably from waste streams, through process development for surfactant production, product processing and characterization, to the integration of the biosurfactants into natural cosmetic products.