{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T12:00:56Z","timestamp":1777550456870,"version":"3.51.4"},"reference-count":26,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2016,2,9]],"date-time":"2016-02-09T00:00:00Z","timestamp":1454976000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Contact Dermatitis"],"published-print":{"date-parts":[[2016,4]]},"abstract":"<jats:title>Summary<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Hair dyes are known to contain potent contact allergens for which sensitization rates have increased over the last decade.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To examine the type and frequency of potent contact sensitizers labelled on hair dyes sold in metropolitan <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>angkok, <jats:styled-content style=\"fixed-case\">T<\/jats:styled-content>hailand.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>During the 2013\u20132014 study period, labelled ingredient information from home use and professional hair dye products was collected.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Two hundred and fifty\u2010two hair dye products were evaluated. One hundred and forty\u2010nine products from 48 brands were domestically produced in Thailand, and 103 products were from 23 multinational brands produced in countries other than <jats:styled-content style=\"fixed-case\">T<\/jats:styled-content>hailand. Two hundred and fourteen of 252 (84.9%) hair dye products were found to contain strong skin sensitizers, with 118 (46.8%) being found in domestically produced products, and 96 (38.1%) being found in multinational brand products. Thirty\u2010eight hair dye products (15.1%) were free of potent skin sensitizers. The number of domestically produced products (31, 20.8%) that were free of potent skin sensitizers was significantly higher (<jats:italic>p<\/jats:italic>\u2009=\u20090.002) than the number of multinational brand products (7, 6.8%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p><jats:italic>p<\/jats:italic>\u2010<jats:styled-content style=\"fixed-case\">P<\/jats:styled-content>henylenediamine was the most prevalent potent sensitizer found among domestically produced hair dyes available on the market. Our findings indicate regional differences in hair dye allergen exposure.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cod.12542","type":"journal-article","created":{"date-parts":[[2016,2,9]],"date-time":"2016-02-09T09:38:52Z","timestamp":1455010732000},"page":"222-229","source":"Crossref","is-referenced-by-count":12,"title":["Contact sensitizers in commercial hair dye products sold in <scp>T<\/scp>hailand"],"prefix":"10.1111","volume":"74","author":[{"given":"Waranya","family":"Boonchai","sequence":"first","affiliation":[{"name":"Contact Dermatitis Clinic, Department of Dermatology, Faculty of Medicine Siriraj Hospital Mahidol University  10700 Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monthathip","family":"Bunyavaree","sequence":"additional","affiliation":[{"name":"Contact Dermatitis Clinic, Department of Dermatology, Faculty of Medicine Siriraj Hospital Mahidol University  10700 Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Waranaree","family":"Winayanuwattikun","sequence":"additional","affiliation":[{"name":"Contact Dermatitis Clinic, Department of Dermatology, Faculty of Medicine Siriraj Hospital Mahidol University  10700 Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pranee","family":"Kasemsarn","sequence":"additional","affiliation":[{"name":"Contact Dermatitis Clinic, Department of Dermatology, Faculty of Medicine Siriraj Hospital Mahidol University  10700 Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,2,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.39042.643206.BE"},{"key":"e_1_2_7_3_1","unstructured":"DaswaniK.More men coloring their hair.The Los Angeles Times 29 January2012. 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Memorandum on hair dye chemical sensitisation. 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