{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T03:18:58Z","timestamp":1783048738996,"version":"3.54.6"},"reference-count":12,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2020,6,25]],"date-time":"2020-06-25T00:00:00Z","timestamp":1593043200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intern J of Cosmetic Sci"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>During the development of cosmetic formulations, in vitro and in vivo methods are essential tools used to reliably assess the skin irritation potential of a product or ingredient. Epicutaneous patch testing (single and\/or multiple application protocols) has long been used as an initial in vivo method to screen for possible skin irritation properties of a substance or formulation. To confirm the mildness and dermatological and\/or consumer acceptance of a product, use tests are often subsequently conducted. A study was therefore initiated to see how well patch test results correlate with use tests with respect to irritation elicited by skincare (leave\u2010on) products.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods\/results<\/jats:title><jats:p>A number of different cosmetic formulations were assessed in both tests. Although the patch test results did not indicate substantial irritation potentials, immediate\u2010type reactions (stinging and redness) were observed in some volunteers which disappeared within approx. 1\u00a0h. Although transient, these reactions suggested that consumer acceptance would probably be low and the studies were discontinued. Immediate\u2010type reactions are rare but have been described for some substances used in cosmetics. These unexpected results were nevertheless intriguing and prompted the start of a journey to see if patch test protocols could be modified to assess these reactions. An occlusive short\u2010term patch test protocol with an application period of 20\u00a0min was developed. Successful identification of the spontaneous reactions became possible. Furthermore, there was a correlation between the intensity of reactions observed in the short\u2010term patch test and those observed in the controlled in\u2010use studies. Short\u2010term patch testing using the developed protocol can therefore reliably be used as a screening method, for example in the development and optimization of cosmetic formulations containing ingredients that could cause spontaneous reactions, for instance of non\u2010immunological contact urticaria type.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The lessons learned from this studies indicate that simple modifications of existing test protocols can lead to important insights into skin reactions. These modifications can then be used to create further building blocks in the development and optimization of test strategies for cosmetic formulations which offer reliable study designs for possible reactions product developers may encounter.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ics.12619","type":"journal-article","created":{"date-parts":[[2020,4,12]],"date-time":"2020-04-12T06:09:37Z","timestamp":1586671777000},"page":"328-335","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Adapting epicutaneous patch testing protocols to assess immediate\u2010type skin reactions"],"prefix":"10.1111","volume":"42","author":[{"given":"A.","family":"Mehling","sequence":"first","affiliation":[{"name":"BASF Personal Care and Nutrition GmbH Duesseldorf Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Benard","sequence":"additional","affiliation":[{"name":"Institute Dr. Schrader Hautphysiologie Holzminden Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5925-8485","authenticated-orcid":false,"given":"N.","family":"Braun","sequence":"additional","affiliation":[{"name":"DermaTronnier GmbH &amp; Co. KG, Institute for Experimental Dermatology at Witten\/Herdecke University Witten Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Degwert","sequence":"additional","affiliation":[{"name":"SGS SIT GmbH Skin Investigation and Technology Hamburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Duttine","sequence":"additional","affiliation":[{"name":"WIN COSMETIC GmbH &amp; Co.KG Floersheim\u2010Dalsheim Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Jassoy","sequence":"additional","affiliation":[{"name":"Henkel AG &amp; Co. KGaA Duesseldorf Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Merk","sequence":"additional","affiliation":[{"name":"RWTH Aachen University Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"U.","family":"Rossow","sequence":"additional","affiliation":[{"name":"CCR GmbH &amp; Co. KG Eschweiler Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Welzel","sequence":"additional","affiliation":[{"name":"Universit\u00e4tsklinikum Augsburg Augsburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W.","family":"Wigger\u2010Alberti","sequence":"additional","affiliation":[{"name":"BioSkin GmbH Hamburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K.P.","family":"Wilhelm","sequence":"additional","affiliation":[{"name":"proDERM Institut f\u00fcr Angewandte Dermatologische Forschung GmbH Hamburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Ennen","sequence":"additional","affiliation":[{"name":"SkinNEXT Consulting Hamburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,6,25]]},"reference":[{"key":"e_1_2_8_2_1","unstructured":"EU Cosmetic Regulation (EC) No. 1223\\2009;http:\/\/eurlex.europa.eu\/LexUriServ\/LexUriServ.do?uri=OJ:L:2009:342:0059:0209:en:PDF."},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0536.2009.01656.x"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0278-6915(97)00106-3"},{"key":"e_1_2_8_5_1","unstructured":"Cosmetics Europe. (1997)\u201cProduct test guidelines for the assessment of human skin compatibility\u201d;https:\/\/www.cosmeticseurope.eu\/files\/6014\/6407\/8875\/Product_Test_Guidelines_for_the_Assessment_of_Human_Skin_Compatibility_\u2010_1997.pdf."},{"key":"e_1_2_8_6_1","first-page":"19","article-title":"Studies on the skin compatibility of cosmetics involving human subjects \u2010 Study portfolio and test strategy","volume":"17","author":"Ennen J.","year":"2014","journal-title":"IFSCC."},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/1346-8138.12505"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0536.1998.tb05880.x"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-662-07677-4_26"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-43102-4_6"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0536.1998.tb05658.x"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0846.2011.00590.x"},{"key":"e_1_2_8_13_1","first-page":"552","article-title":"Immediate contact skin reactions, an update of Contact Urticaria, Contact Urticaria Syndrome and Protein Contact Dermatitis \u2013 \"A Never Ending Story\"","volume":"20","author":"Gimenez\u2010Arnau A.","year":"2010","journal-title":"Eur. 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