A histopathological study of the percutaneous implantation of polyester fibers.

A histopathological study was made on scalp biopsies at 1 day, 1 week, 2 weeks, 1 month, 2 months, 5 months, and 20 months following implantation of synthetic fibers developed as artificial hair in Japan, in order to determine the histological conditions of its fixation over an extended period. In addition, the operative technique and materials for implantation were explored.