{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T03:43:03Z","timestamp":1790912583353,"version":"4.1.0"},"reference-count":33,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T00:00:00Z","timestamp":1717372800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Drug Testing and Analysis"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Hair analysis is a powerful tool to assess drug use, yet the challenge of external contamination complicates its interpretation. Understanding the influence of cosmetic hair treatments is pivotal as their presence may affect this phenomenon. This study investigated the effects of four cosmetic treatments (bleach, henna, gel, and dry shampoo) on the external in vitro contamination of cocaine and its primary metabolite, benzoylecgonine (BE). Hair samples were divided into four groups: A\u2010hair treated with cosmetics then contaminated; B\u2010hair contaminated then subjected to cosmetic treatment; and C\u2010hair solely contaminated (control group). Negative hair samples (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200924) were immersed in a cocaine and BE aqueous solution of 1\u00a0\u03bcg\/mL for 24\u2009h. All hair samples were analyzed by a LC\u2013MSMS procedure successfully validated according to ANSI\/ASB Standard 036 guidelines (limit of quantification at 10\u00a0pg\/mg). Henna in Group A (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200913) resulted in the most substantial reduction for cocaine (92%), while bleach in Group B (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200915) showed an 80% decrease. For BE, Group A henna (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200913) exhibited a 50% reduction, and Group B bleach (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200915) demonstrated a 71% decrease, all compared to Group C (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200924). The study found no significant differences concerning hair color (black (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20093), brown (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200910), red (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20095) and blond (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20096)) or shape (straight (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20096), wavy (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200916), curly (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20091), and coily (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u20091)). All analysis were performed in triplicate with variations below 20%. These findings emphasize that cosmetic treatments do affect cocaine\/BE concentrations in hair when exposed to external contamination, highlighting the importance of considering an individual's cosmetic history prior to interpretation.\n                  <\/jats:p>","DOI":"10.1002\/dta.3741","type":"journal-article","created":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T21:30:28Z","timestamp":1717450228000},"page":"399-411","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The influence of cosmetic treatments in the uptake of in vitro cocaine contamination in hair"],"prefix":"10.1002","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-6309-6520","authenticated-orcid":false,"given":"Alexandra","family":"Dombroski","sequence":"first","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"},{"name":"Biomarkers Core Lab, Irving Institute for Clinical and Translational Research Columbia University Irving Medical Center  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marialejandra Faure","family":"Betancourt","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexis","family":"Alvarado","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"St. Fleur","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Argeliz","family":"Pomales","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marta","family":"Concheiro\u2010Guisan","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3224-9738","authenticated-orcid":false,"given":"Ana Miguel Fonseca","family":"Pego","sequence":"additional","affiliation":[{"name":"Department of Sciences, John Jay College of Criminal Justice City University of New York  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,6,3]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.forsciint.2011.10.024"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0379\u20100738(96)02043\u20109"},{"key":"e_1_2_6_4_1","volume-title":"External Contamination of Hair by Cocaine: An Issue in Forensic Interpretation","author":"Blanka 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