Hair prolongation process is for personal hair and involves twin hair strands fixed in casing and personal hair strands fed with a loop through casing

摘要

The hair prolongation process is for personal hair and involves twin hair strands (11) fixed in a casing (10) and personal hair strands (13) fed with a loop (12) through the casing. For fixture of the personal hair in the casing, the latter is deformed. In order to provide an acceptable treatment of the personal hair and the complete reusability of the twin hair strands on a guaranteed basis, the casing is mechanically deformed.