Boris Stoeber, PEng, PhD is Professor, Mechanical Engineering and Electrical and Computer Engineering, Research Chair in Microfluidics and Sensing Technology, Faculty of Applied Science, University of British Columbia, Vancouver Raja K Sivamani, MD, MS (Bioengineering), AP is Ayurvedic Practitioner, Pacific Skin Institute; Adjunct Associate Professor of Clinical Dermatology, Director of Clinical Research, University of California, Davis; Associate Professor of Dermatology, California Northstate University, College of Medicine; and Adjunct Assistant Professor, Co-Director of Microbiome Labs Research Initiative, Department of Biological Sciences, California State University, Sacramento Howard I. Maibach, MD is Professor, Dermatology, School of Medicine, University of California at San Francisco