I am not a medical Dr, please keep in mind that this answer is for information purposes only, and is not intended to diagnose, treat or replace sound medical advice from your physician or health care provider.
Um, not the hair per se, it is the receptors/enzymes from it that are under the skin that cause the transition to more DHT instead of test. Or so I understand.Then shave it ..problem solved...LOL
I guess this is possibly why some docs tell you to put it on the inside of the forearms, then slide the forearms onto your sides. Thin skin and not much hair.
As far as the DHT conversion, it might also explain why gels at times, do not seem to raise some guys libidos. I just wanted some more solid info on this, if anybody knew where I could look and or read!?