I checked out the site. I am always leery of companies who run sites and expect to do business with the public, yet don't have the time or intelligence to proof read their site. Verbum sap's (spell?) site, several times referred to DHT as BHT and they "gauganteed" their results. After those two blunders I did not need to read any further. Not professional at all, I think the above poster got it right.
There are all kinds of chemicals and substances that, on the scratch pad of a researcher, will have a desired effect on paper... however, when introduced into the complicated and dynamic chemical mix of the human body don't end up working as planned. That's why we have things called "clinical trials"... and I don't see any references to such on their website.