I went prematurely gray due to being very ill. I was told that PABA (a B vitamin that often is not part of B complex supplements) and adrenal support can sometimes reverse gray hair. I am now 49. I still have some gray at the temples but I think it is less than it used to be (in my mid thirties). I took a boatload of supplements for a long time (for health reasons, not vanity -- I figured if gray hair was caused by adrenal stress and vitamin deficiency, then it was an indicator of what to treat for).
It's relatively cheap if you want to try it and see if it does anything for you.
Unfortunately, not really (in part because I sort of have no old photos of myself).
I have some recent-ish photos (made in the last two to three years) on my blog. But I have located only one photo from a few years ago. It was made under very dark conditions and really does not show anything. For one thing, it is too small. A confounding factor is that my hair goes readily blonde, so I look wildly different from one photo to the next, depending on a lot of factors.
I will additionally clarify that "gray at temples" may be misleading. It is more like on either side of my forehead, along the edge of the hairline. So the old photo of me where I kind of have bangs -- those bangs would obscure any gray hair. Newer photos where my hair is swept back would be much more inclined to reveal gray hair against the brunette -- at least in photos where I am not so blonde that you can't really tell the difference between the blonde strands and the gray ones.
Several years ago (07) when resveratrol seemed to hold promise, I tried 300mg/day for a few months. I gave it up after the only benefit I noticed (ok, maybe better sleep) was that I stopped growing gray hairs.
