BillD: The grey-hair question is answered on the Locks of Love website; it's considered "unsuitable" for the hairpieces, but is sold to offset manufacturing costs. Here are the complete guidelines, copied from the site:

HAIR DONATION GUIDELINES

* We accept 10" minimum hair length (tip to tip), not wigs, falls, or synthetic hair
* Please bundle hair in ponytail or braid
* Hair needs to be clean, dry, and placed in a plastic bag
* We need hair from men and women, young and old, all colors, and all races
* Hair may be colored or permed, but not chemically damaged (if you're not sure, ask your stylist)
* Hair swept off the floor is not usable
* Hair cut years ago is usable as long as it has been stored in a ponytail
* Hair that is short, gray, or unsuitable for children will be separated from the ponytails and sold at fair market value to offset the cost of manufacturing
* You may pull curly hair straight to measure the minimum 10"
* The majority of all hair donated comes from children who wish to help other children
* Layered hair may be put into more than one ponytail for donation

Sharon