For the past 75 years the Society of Cosmetic Chemists’stsimehC e Society f Cosmetic December Annual Meeting has fostered laughs, friendships and probably some of the best stories ever told. p y We want to hear yours! Share your favorite SCC event story or memory with us as we celebrate y e 75 years of business and our 75th Annual y Scientific Meeting & Showcase (December 14-15, 2021). Submit your story and/or picture via email at scc@scconline.org. Your story may be published on the SCC website or on our social media platform(s).

Journal of Cosmetic Science The Official Journal of the Society of Cosmetic Chemists Volume 72 No. 1 | January/February 2021 ORIGINAL ARTICLES Formulation and In Vitro and In Vivo Assessment of Natural Emulgel Containing Lemongrass Essential Oil Abdel Naser Zaid, Nidal Jaradat, Ramzi Shawahna, Fatema Huseen, Ahmad M. Eid, Alaa Attoun, Abeer Sandouka, Talal Abed Alhadi, Tharaa Hilal, Wissal Aqtash | pp. 1 Application of Combinatorial Methods for the Identifi cation of Synthetic Hair- Conditioning Polymers Thomas H. Kalantar, Mladen Ladika, Tatiana V. Drovetskaya, Adam Safi r, Steven Zong, Xinnan Zhang, Susan L. Jordan | pp. 17 Skin Penetration of Hazardous Air Pollutants in Presence of Antipollution Cosmetics Soraya Pontes-López, Ana Gonzálvez, Francesc A. Esteve-Turrillas, Sergio Armenta | pp. 33 Design and Evaluation of Topical Antioxidant Nanogel Formulations Gökçe Tetik, Seda Rençber, Ezgi T. Özoğlu, Evren A. Yapar, Sinem Y. Karavana, Özgen Özer | pp. 47 Identifi cation of the Underlying Genetic Factors of Skin Aging in a Korean Population Study Jung Oh Kim, Boreum Park, Joung Yoon Choi, So Ra Lee, So Jin Yu, Myeongjin Goh, Haekwang Lee, Won-Seok Park, In Soo Suh, Dae-Seung Koh, Kyung-Won Hong | pp. 63