Posted 21 July 2008 - 12:57 PM
When I was young, I had red hairs interspersed with the black. About 10 years ago, the red disappeared as I began to gray. In the past year taking resveratrol, the red highlights have come back. Unfortunately the gray hairs are still there in quantity, and the gray patches in my eyebrows are unaffected.
One note on hair growth: A hair does not turn gray, nor does the product of a follicle suddenly go from black to gray. A follicle eventually discards a mature hair, and starts another. During the black to gray transition, the tip of a hair will be gray, then the pigment switches on, and the rest of the hair is black. As the process continues, the pigment switches on later and later, eventually the follicle produces only gray. Fewer gray roots would be an indication of efficacy, but a gray hair with black roots is quite normal for middle age, and no indication of impending black hair. (Alas.)
Interesting that an herb related to Knotweed, the source of resveratrol, is know in Chinese as "He shou wu", or "Mr. He's Black Hair" and was prescribed as a remedy for graying hair. The plant is also called "FoTi", and contains resveratrol analogues. It is only available as a 12:1 extract, and would be quite expensive in what I think would be an effective dose. Before we were able to get quality resveratrol easily, I took it for a few weeks. My hair did not turn black, but it had a similar effect to resveratrol in reducing cold sensitivity, and reduced arthritic pains.
You can buy one ounce (30 ml) bottles of the extract at most supplement stores (e.g., Vitamin Shoppe).