Will Hair Dye Result in a Negative Test?

Q: Will Hair Dye Result in a Negative Test?

No. The drugs aren&rsquo;t on the hair. They&rsquo;re in it. Drugs travel up into the hair shaft from the bloodstream. So dyeing and bleaching, and even washing, will lower any medicines that have become deposited on the hair (again, perhaps from second-hand exposure), but it will not remove the drugs that are actually in the hair shaft. Before drug testing, in any case, the hair collector will wash the test subject&rsquo;s hair to make sure that any drugs that show up will be from the hair shaft.

No. The drugs aren’t on the hair.

They’re in it. Drugs travel up into the hair shaft from the bloodstream. So dyeing and bleaching, and even washing, will lower any medicines that have become deposited on the hair (again, perhaps from second-hand exposure), but it will not remove the drugs that are actually in the hair shaft.

Before drug testing, in any case, the hair collector will wash the test subject’s hair to make sure that any drugs that show up will be from the hair shaft.

Answered by: 一
Published: 03/14/2023
Updated: 03/14/2023

We are an education company, not a law firm. The information and content we provide is for general informational purposes only and does not constitute legal advice. We make no representations, warranties, or guarantees regarding the accuracy, completeness, or applicability of the content. It is important to always consult with a qualified attorney for specific legal counsel pertaining to your individual circumstances.