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J. Cosmet. Sci., 71, 455–480 (November/December 2020) 455 Application of Biosurfactants and Biopolymers in Sustainable Cosmetic Formulation Design ADELINE M. BENHUR, SAMYUKTA PINGALI, and SAMIUL AMIN , Department of Chemical Engineering, Manhattan College, Bronx, NY (A.M.B., S.P., S.A.) Accepted for publication June 25, 2020 . Synopsis Increased public awareness regarding the ingredients that make up cosmetic and personal care formulations coupled with the growing concern about the dwindling nonrenewable sources from which most cosmetic ingredients like surfactants and polymers are obtained from has led to a strong need to achieve sustainability within the cosmetic industry. It has become the need of the hour to incorporate sustainability at each and every point of the product life cycle. This review focuses on the sustainable sourcing and formulation design of two key cosmetic ingredients—polymers and surfactants. To be able to completely replace their synthetic counterparts, it is crucial that these green products exhibit an effi cacy level at par or greater than that of the products already on the market. Hence, various studies that show the impact of these alternatives on various performance parameters such as fi lm formation and rheology have also been discussed. Being a heavily consumer-driven industry, some of the decisive future trends and challenges that the cosmetic industry needs to address have also been explored in this review. INTRODUCTION Most companies and individuals today are focused on the sustainability of their processes and products. The UN World Commission on Environment and Development defi nes sustainability as “the ability to meet the needs of the present without compromising the ability of future generations to meet their own needs.” As a result, industries are trying to incorporate sustainability in every aspect of product development. Furthermore, Dimitrova et al. (1) reported that consumers are becoming more environmentally aware and that this growing awareness was changing their buying patterns. They are shifting gears to a more healthy lifestyle for both themselves as well the planet. Chemical processes and products are typically evaluated on the basis of their performance. However, at present, this “performance” solely depends on the primary function of the process or product and does not take into account the dire consequences of the same on the ecological system. Zimmerman et al. (2) in their study call attention to the need for Address all correspondence to Samiul Amin at samin01@manhattan.edu.