Can Hair Treatments Influence Drug Test Results? Bleaching, Shampoo & Detox Explained
Introduction Hair drug testing is designed to detect long-term substance use by analyzing chemical markers embedded inside the hair shaft. Because of this internal mechanism, many people wonder whether cosmetic or cleansing treatments—such as bleaching, dyeing, frequent washing, or detox shampoos—can alter results. The short answer is that these treatments may affect drug concentrations in […]
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