Hey drbill! Thanks for the info.. I guess what i'm really curious about is this:
We all know that (roughly) your body is clear of thc metabolites in about a month after the last use. (or maybe by then there are too few to reach the threshold of detectibility for a urinalysis test.
Either way, isn't the hair folicle 'tagged' by the metabolites while they are in the system? In other word, wouldn't new hair growth be 'clean' if it sprouts up, say, a month after the smoker's last toke? And if not then, when? A shorter period of time? Longer? Much longer?
Whats an example of a penetrating emulsifying agent, btw?