Vol . 70 No . 6 November/December 2019 JOURNAL OF COSMETIC SCIENCE The Official Journal of the Society of Cosmetic Chemists Contents Page ORIGINAL ARTICLES Assessment of the Effect of Extract Formulation of Date Palm Kernel on Facial Skin Wrinkles: Biophysical Measurements and Digital Profilometry Aziz Alsohaimi and Abdel-Motaal Fouda . . . . . . . . . . . . . . . . . . . . . . . 277 Electrophoretic Mobility of Some Tattoo Dyes as an Approach to Remove Their Subcutaneous Traces Igor Winkler, Ulyana Andrushko, and Alla Velyka . . . . . . . . . . . . . . . . 291 Effect of Palmitic Acid Conjugation on Physicochemical Properties of Peptide KTTKS: A Preformulation Study Seyedeh Maryam Mortazavi, Farzad Kobarfard, Howard I. Maibach, and Hamid Reza Moghimi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 Utilization of Coffee Silverskin By-Product from Coffee Roasting Industry through Extraction Process for the Development of Antioxidant Skin Gel Samuel P. Kusumocahyo, Patrick Tangguh, Christina D. Annelies, and Hery Sutanto. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313