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A member asked:

Does marijuana stay in the root of the hair follicle for 6 months, or does it get pushed out by the new hair growing in?

A doctor has provided 1 answer
Dr. Jeffrey Satinover answered

Specializes in Psychiatry

Long time: Thc is stored in fat cells which serve as a reservoir and release it slowly into the bloodstream and from there into hair follicles. For a long time user, the "reservoir" can be quite full and so may feed follicles at 6 mo and longer. The new hair growing out takes some follicle thc with it as new thc is being fed in.

Answered 1/17/2017

5.3k views

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