*Check this out, I've just invented a way to do gradient-shading on your white or gray hair. This hairstyle feat was formerly technically impossible, so you might become the pioneer.
*First, make a clean break with all your former hairstyles by shaving your head. Then be sure to conscientiously rub this new cosmeceutical goop deep into all your follicles. This intervention will remove the excess hydrogen peroxide in your aging follicles and will cause your hair to grow back with its original, natural color. (It'll still be thinner, weaker and more brittle than youthful hair, but Rogaine isn's perfect either).
*Continue to rub the anti-gray goo in for four months, until you've got about five centimeters of hair. Then stop the treatment for eight months. Your hair will return to its normal gray. However, the tint will appear slowly within each strand of hair. It's not a dye, it's a metabolic process.
*Rinse your cells with the goo and repeat. You should end up with a bandicoot-like set of stripes along a long mane of hair. Since hair strands grow at individual rates, you'll get a complex biological salt-and-pepper effect that no mere dye-job could manage.
*This will be an entirely personal look (since it's your own anatomy at work) and it'll be quite up to date, too, since the benighted folk of earlier eras could not dream of such an intervention.
*Good luck with it. Send us Instragrams!
http://www.eurekalert.org/pub_releases/2013-05/foas-gha050313.php