RESEARCH ARTICLE Nicola J. Hewitt Corresponding Author E-mail address: nickyhewittltd@yahoo.co.uk https://orcid.org/0000-0002-1045-0748 Cosmetics Europe, Brussels, Belgium Correspondence Dr Nicola Hewitt, Wingertstrasse 25, 64390 Erzhausen, Germany. Email: nickyhewittltd@yahoo.co.uk Search for more papers by this author PDF Share Get access to the full version of this article.View access options below. If you have previously obtained access with your personal account, Please log in.