Study: Hair Tests Less Likely to Detect Cannabinoids Following Cosmetic Treatments | NORML
DUDELANGE, LUXEMBOURG — Cosmetic hair treatments, such as bleaching or perming, interfere with the detection of cannabinoids and their metabolites in hair, according to data published in the journal Forensic Science International. A pair of European researchers assessed the impact of various cosmetic treatments — including bleaching, perming, and dyeing — on 30 THC-positive hair samples. They concluded: […]
Study: Hair Tests Less Likely to Detect Cannabinoids Following Cosmetic Treatments | The Daily Chronic