Trichoptilosis

Trichoptilosis is the "splitting of hairs at the ends," according to Dorland's Pocket Medical Dictionary, 21st edition, 1968. Often referred to as "split ends." Comes from the Greek root "tricho" meaning hair and "ptilosis" meaning "falling out of the eyelashes." Also called "schizotrichia."

The only way to repair split ends would be to trim the hair.