Vol . 69 No . 1 January/February 2018 JOURNAL OF COSMETIC SCIENCE The Official Journal of the Society of Cosmetic Chemists Contents Page ORIGINAL ARTICLES A Prototype Lip Balm: Summary of Three Dermatological Studies Demonstrating Safety and Acceptability for Sensitive Skin Stephanie Nisbet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Evaluation on an Optical Scanning Device for Skin Profile Measurement Jiuai Sun. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 New Aspects of the Structure of Human Scalp Hair-II: Tubular Structure and Material Flow Property of the Medulla Asao Yamauchi and Kiyoshi Yamauchi . . . . . . . . . . . . . . . . . . . . . . . . 19 Use of L-Glutamic Acid in a New Enrichment Broth (R-TATP Broth) for Detecting the Presence or Absence of Molds in Raw Ingredients/Personal Care Product Formulations by Using an ATP Bioluminescence Assay Youjun Yang and Donald J. English . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Simulation of the Elastin and Fibrillin in Non-Irradiated or UVA Radiated Fibroblasts, and Direct Inhibition of Elastase or Matrix Metalloptoteinases Activity by Nicotinamide or Its Derivatives Neena Philips, Jovinna Chalensouk-Khaosaat, and Salvador Gonzalez . . 47 Comparing the Influence of Five Patch Types on the Result of a 12-Day Cumulative Irritancy Patch Test Xi Wang, Xiaohong Shu, Lin Zou, Zhaoxia Li, and Li Li . . . . . . . . . . . . . 57 The Rheological and Skin Sensory Properties of Cosmetic Emulsions: Influence of Thickening Agents Yanan Li, Zhaoqing Zhou, Xiaomin Zhao, Hua Zhao, and Xin Qu . . . . . 67