6 citations
,
May 2007 in “Forensic Science Medicine and Pathology” Minoxidil can make it hard to detect cocaine in hair tests.
23 citations
,
January 2016 in “Forensic Science International” Thermal hair straightening changes drug levels in hair, affecting test results.
128 citations
,
January 1996 in “Journal of analytical toxicology.” Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
Forensic hair analysis for drugs is now more reliable and accurate.
157 citations
,
April 1997 in “International journal of legal medicine” Cosmetic hair treatments like bleaching and dyeing reduce drug levels in hair samples.