Hey bro, HAIR ANALYSIS!!! What company spends that kind of money?? Sorry I dont know much about the shampoo but with soo many gimics out there.....As far as the test goes, I could be wrong but I think this is the same test that scientists have performed on mummies to learn that cannibis and coccain were commonly used substances. They claim it is the only fool proof test there is but wether it leaves your body once your hair grows out is the question. Sure a google search would come up with some un-biased info on it. Hell, who knows, they may account for trace amounts for "passing through a frat party" type situation One can only hope. Don't stress too much til after you conclude your research. Peace