A prospective customer writes asking "Can one become tolerant to HairGenesis®?"  Here is my response: First, I would like to share a couple of things that will help provide useful context.  To begin with, a number of ingredients used in HairGenesis™ have, historically, been used to treat a different ailment which is benign prostatic hyperplasia (BPH) --- a non-cancerous growth of the prostate.  Long-term clinical studies, in vitro analyses, and basic science experiments support the hypothesis that such ingredients provide continual benefit without a reduction in affect.