{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:51:33Z","timestamp":1787014293720,"version":"build-2736575974"},"reference-count":32,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,9,29]],"date-time":"2017-09-29T00:00:00Z","timestamp":1506643200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"L'Or\u00e9al Research & Innovation Department, Clichy, France"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intern J of Cosmetic Sci"],"published-print":{"date-parts":[[2017,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>\n                      The re\u2010greasing process and kinetics of the human scalp, post\u2010shampooing, have been previously documented,\n                      <jats:italic>in vivo,<\/jats:italic>\n                      on a few Caucasian subjects. The objective of the presented research was to extend such knowledge over seven different ethnic groups.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      The post\u2010shampooing re\u2010greasing kinetics of the scalp was studied on 1325 subjects (women and men of two distinct age classes) from seven different ethnic groups in their residential and native country. Sebum amounts were determined onto small shaved scalp areas at various times post\u2010shampooing, using the Sebumeter\n                      <jats:sup>\u00ae<\/jats:sup>\n                      technique.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      As previously published on Caucasian subjects, scalp re\u2010greasing process follows a hyperbolic\u2010like kinetics over days. However, amounts of collected sebum highly vary with ethnicity. As recorded through the casual level (\n                      <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content>\n                      ) at the equilibrium phase, 2\u20133 days post\u2010shampooing, the highest amount of sebum was found in African American subjects, followed in descending order by Caucasian American, Japanese, Chinese, Thai, Caucasian European and Indian subjects, the latter showing very low values. Lower amounts of sebum were recorded in the older age class in all ethnics, as compared to the younger one, and male subjects were found higher sebum producers than women, irrespective of ethnicity.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The kinetics and slopes of the re\u2010greasing process of the human scalp appear similar in all ethnic groups studied. However, striking quantitative differences are found between the seven ethnic groups, resulting from different sebaceous production levels and scalp hygiene routines.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ics.12425","type":"journal-article","created":{"date-parts":[[2017,9,2]],"date-time":"2017-09-02T02:56:38Z","timestamp":1504320998000},"page":"629-636","source":"Crossref","is-referenced-by-count":12,"title":["The worldwide diversity of scalp seborrhoea, as daily experienced by seven human ethnic groups"],"prefix":"10.1111","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6468-8359","authenticated-orcid":false,"given":"F.","family":"Pouradier","sequence":"first","affiliation":[{"name":"L'Oreal Research and Innovation 11\u201013 rue Dora Maar 93400 Saint\u2010Ouen France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Liu","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation No. 550 JinYu Rd., Pudong New Area Shanghai Pudong 210206 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Wares","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation 159 Terminal Ave Clark NJ 07066 U.S.A"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.","family":"Yokoyama","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation KSP R&amp;I\u2010A1101, 2\u20101, Sakado 3\u2010chome Kawasaki 213\u20100012 Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Collaudin","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation No. 550 JinYu Rd., Pudong New Area Shanghai Pudong 210206 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9416-2673","authenticated-orcid":false,"given":"S.","family":"Panhard","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation 11\u201013 rue Dora Maar 93400 Saint\u2010Ouen France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.","family":"Saint\u2010L\u00e9ger","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation No. 550 JinYu Rd., Pudong New Area Shanghai Pudong 210206 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G.","family":"Loussouarn","sequence":"additional","affiliation":[{"name":"L'Oreal Research and Innovation 11\u201013 rue Dora Maar 93400 Saint\u2010Ouen France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,9,29]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1201\/b14191-4"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1201\/b14191-5"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/ics.12208"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1087-0024.2005.10104.x"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-2494.2006.00326.x"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/02681219380000081"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1201\/b14191-22"},{"key":"e_1_2_6_9_1","first-page":"16","volume-title":"Principles of Cosmetics for the Dermatologist","author":"Leyden J.J.","year":"1982"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2133.1982.tb14703.x"},{"key":"e_1_2_6_11_1","first-page":"75","article-title":"On the influence of frequent hair washing on the human sebaceous gland (author's transl)","volume":"168","author":"Wirth H.","year":"1982","journal-title":"Dermatol. 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