(1) Calculated using USDA BioPreferred Method for determining bio-based content and validated, or being validated, by carbon 14 testing (ASTM D6886) (2) May be suitable for vegan and/or cruelty-free claims. If you are interested in making a vegan and/or cruelty-free claim, please request our Vegan Suitability statement and/or Animal Testing statement for specifics on this product and compare to the certification(s) you are seeking to meet (3) USDA BioPreferred® is a registered trademark of the U.S. Department of Agriculture (4) Products containing palm oil derivatives 100% renewable 100% bio-based Vegan &Cruelty-Free Suitable2 Low levels of 1,4-Dioxane Reduces reliance on fossil fuel feedstocks Manufactured with renewable energy Performance identical to petro-based options Lower carbon footprint than petro- based versions USDA Certified Biobased Product3 RSPO Supply Chain Certified via Mass Balance4 The 100% Bio-Based ECO Range is the widest range of 100% renewable surfactants on the market with over 50 different personal care ingredient codes. By using an alternative route to EO with bioethanol from biomass sources, it significantly increases the bio-based content of ethoxylated products and reduces reliance on fossil fuels. This range of ingredients meets consumer demands for performance, while being 100% renewable and 100% bio-based. Moreover, the ingredients are manufactured with renewable energy and have a lower carbon footprint than petro-based options. Join us on this sustainability journey Learn more about the 100% Bio-based ECO Range of surfactants. Visit us at: www.crodapersonalcare.com North America marketing-usa@croda.com Europe, Middle East &Africa pc-europe@croda.com Latin America marketinglatam@croda.com Asia Pacific pc-asia@croda.com 1 Smart science to improve lives TM

Journal of Cosmetic Science The Official Journal of the Society of Cosmetic Chemists Editor-in-Chief: Senior Associate Editor: Paolo Giacomoni, PhD, Insight Analysis Consulting, Brownsboro, AL and L-Raphael, Geneva Switzerland K.P. Ananthapadmanabhan, PhD, College of Pharmacy, University of Cincinnati Associate Technical Editors: Jennifer Marsh, PhD, The Procter &Gamble Company Robert Lochhead, PhD, University of Southern Mississippi Roger McMullen, PhD, Ashland, LLC Gopinathan Menon, PhD, California Academy of Science Steve Madison, PhD, Quinnipiac University Paul Lawrence, PhD, Biocogent, LLC President: Vice President: Vice President-Elect: Secretary: Treasurer: Chief Executive Officer: Mark Chandler, ACT Solutions Corporation Tony O’Lenick, Nascent Technologies Corporation Ashkay Talati, Goop Qihong Zhang, PhD, The Estēe Lauder Companies Yulia Park, PhD, Amway Erica L. O’Grady, CAE, Society of Cosmetic Chemists HQ © Copyright 2023 by the Society of Cosmetic Chemists. JOURNAL OF COSMETIC SCIENCE®, the official scientific journal of the Society of Cosmetic Chemists, is a registered trademark of the Society of Cosmetic Chemists. Access/Subscription: JOURNAL OF COSMETIC SCIENCE®, the Official Journal of the Society of Cosmetic Chemists is published digitally six times per year individual access is included with annual SCC membership in good standing. Available to others with annual subscription pricing: $250.00 (1-10 users) $350 (11-50 users) $490 (51-100 users) and $686 (100+ users). Permissions: Permission is granted to readers and nonprofit libraries acting for them for fair use of the material contained in this Journal. Permission is further granted to quote from this Journal in scientific works with the customary acknowledgment of the source. Consent from each Journal author(s) along with the Society of Cosmetic Chemists is required to reprint a figure, table, or other excerpt. The republication, systematic, or multiple reproductions of any material(s) in this Journal (including abstracts) is permitted under written license from the Society of Cosmetic Chemists. Citations: JOURNAL OF COSMETIC SCIENCE® is currently indexed in the following citation databases: PubMed, EBSCO, Scopus and Science Citation Index Expanded (Web of Science). Responsibility for Statements Published: The Society of Cosmetic Chemists, the Journal Advisory Group, and the SCC Board of Directors assume no responsibility for statements or opinions advanced by contributors to this Journal. Editors and Publishers: Abstracts or digests of articles not exceeding 400 words may be published when duly credited to the author(s) and the JOURNAL OF COSMETIC SCIENCE®. Authors: When using illustrations or quotations taken from copyrighted publications, authors must get written permission from the copyright holder to reproduce the same. Manuscripts: Manuscripts should be prepared in accordance with “Information for Authors,” which can be found at the end of this issue. Inquiries: Address mailed inquiries to: Editor, Journal of Cosmetic Science The Society of Cosmetic Chemists 14 Wall Street, Suite 1620 New York, NY 10005 or electronically to journal@scconline.org.