Hair-increasing device and method of producing the same

This invention relates to a hair increasing device that improves the freedom of hair styles and, is constituted in such a manner that each hair is knotted to a rib constituting a hair-secured frame with one end portion being twice wound, and the other end portion being once wound and pulled out thereafter. The one end portion of the tied hair is supported so as to stand upright with regard to a rib, and the other end portion is knotted so as to extend longitudinally on and along a rib, and thereby hair flow is formed in the longitudinal direction on a plurality of ribs so that the plurality of ribs is covered and hidden, and becomes hardly visible. Hence the rib or wig base linear member is hardly visible, the knot does not loosen, and the hair increasing device provides a rich voluminous appearance and allows versatility of hair styles.