My reviviogen wrist, the right one, still after two years has not caught back up with the hair on my left wrist. The difference is still notiecable. Revivogen has menthol in it.
Im wondering if Bryan might have been right and methol, despite being an anti-androgen, might be detrimental to all hair growth or keratinocyte cells. You see in Alpecins experiments at the University of Jena in Germany, caffeine alone sped up keratinocytes and hair growth, but Alpecin with menthol, although it got more hairs in the growth phase at four months (up about 8% if I remember correctly, slowed down keratinocyte activity. The peppermint oil/purified water was mixed at about a one to forty-or fifty ratio. A one ounce bottle of peppermint oil in 33 ounces of purified water was too strong and burned. I had to add more water. The "burn" doesnt come immediately. It comes about 30 seconds to a minute afterwards.
Im now testing topical beta sitosterol to see if it can slow my beard growth. Ive tested pine oil before on the hair on the back of my hand, and it reduced hair growth there, but not as markedly as Revivogen did. Pine oil is 18% beta sitosterol, which is easily the highest concentration of that substance found in nature. Scottish mummies found in a peat bog all had cedarwood oil (pine) in their hair a few years back. The article suggested it was for a styling gel, but it simply would be absolutely no good at all for that (I know, Ive tried it). Since pine oil/cedarwood oil is the number one old essential oil (alolng with lavender, rosemary, and thyme to form the four classic essential oils), I imagine the ancients knew it was beneficial for hair growth. Beard hair is androgen stimulated, and I want to see if beta sis can slow it down. I do know that lavender STIMULATED hair on my toe, and I also know that lavender has estrogen binding affinity. There is perillyl alcohol in lavender also
http://www.nlm.nih.gov/medlineplus/drug ... ender.html as well.
If you google "licorice and hair removal" and " peppermint oil or menthol and hair removal" you'll get quite a few hair removal creams and potions that contain those things. Arnica and rose hips were shown to have receptor binding inhibition in human skin by Japanese scientists and clove was shown to have alpha five reductase inhibition in human skin by them also. SO there are natural topical anti-anrdogens out there, but are they also detrimental to hair growth by means of downregulating VEGF expression or angiogenesis too strongly or can they slow cell division of certain components of the hair follicle? The only way we would ever know if for real testing to be perfomed.
The only naturals testing on hair I know of that is acceptable is a scottish study of the four classic essential oils (cedarwood, lavendar, thyme, rosemary) in which 44% of respondents did in fact have better head hair growth afterwards. But alot of them were women, so who knows. Male and female hairloss aren't exactly the same thing.