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low level of testosterone .
Testosterone
Dihydrotestosterone, a derivative of testosterone which is responsible for growing facial hair.
Because it is testosterone that makes facial hair grow in men and although women do have testosterone it is at a much lower level than in men that is why women do not have facial hair.
Testosterone
Testosterone
Facial hair is really a secondary characteristics of males in response to the male hormone testosterone.
Yes of course, L.arginine increases your testosterone level, and if your testosterone level is high that means you will help you grow facial hair so L.Arginine indirectly helps you on growing facial hair
testosterone
Rogaine is a vasodilator which counteracts the constricting effect of DHT on the hair follicles. Since the effectiveness of Rogaine is not uniformly conclusive on regular hair growth, I would say it is unlikely that Rogaine would have any noticeable effect on facial hair growth. If you want thicker facial hair you need an androgenic supplement or testosterone booster.
if you want facial hair its simple, increase your male hormone (testosterone), testosterone is the hormone responsible for these things if you want to know how to increase it visit this site(http://www.nowloss.com/ways-to-increase-testosterone-levels-naturally-without-using-steroids.htm)
testosterone released by your body during puberty.