Oldest cp donated to Locks of Love 6 years ago when she was 11. The ponytail has to be 10" and they will take hair as long as it hasn't been overly processed, you mail it in and if you send in a photo with it, they will send you a photo postcard back thanking you. Cp went through chemo twice (for a blood disorder, not cancer) and was one of the rare and lucky ones that didn't lose her hair, it was something she really wanted to do. FYI, we had to go to several places before we could find someone willing to cut that much hair off in one setting and cp admitted several years later, she cried for weeks.