Princess, the way I read your post it looks like you mean it stays in your scalp (head) forever as in...forever? If I shaved my head (scary thought) and didn't let another med touch my lips for 10 years everything could still be detected in a hair drug test?

Even say, stupid things I did when I was younger? Or does it stay in the hair forever? Inquiring minds REALLY want to know now.
Thanks

Fluffy - I'm under the impression that a strand or two actually gets plucked out by the root - or so thats how it goes in the movies....