This training module focuses on strengthening HD lace and other fine lace or mesh materials used in professional toupees and wigs. HD lace is extremely thin and delicate, and its threads can fray easily after cutting.
By applying a specialized non-fraying adhesive, individual lace threads become bonded and fixed, significantly improving durability and resistance to fraying.
As a result, the lace structure becomes stronger, although slightly less flexible.

The adhesive treatment can be applied either before forming a lace base or after hair knotting has been completed.
In particular, applying the treatment to the excess lace area along the front hairline helps prevent thread fraying after cutting and during long-term wear.

This strengthening technique has long been used in professional toupee manufacturing, where clean edges, dimensional stability, and long service life are essential.
However, it is often not applied in lace wig production for women, which can lead to faster fraying after customization.
This module teaches when and how to apply lace strengthening and non-fraying treatments correctly for professional-grade HD lace products.

The bonding adhesive used in this process was originally developed by John Yim (John Korea Co.) in 1992 and has been continuously upgraded over the years.
It has been widely adopted by professional wig and toupee manufacturers in major production regions such as China, Indonesia, and the Philippines, and is used in products supplied to leading importers in the United States, Japan, Germany, and other global markets.

Decades of real-world production use demonstrate that this adhesive is not only technically effective, but also reliable for long-term manufacturing of high-end custom toupees and wig bases where head-contour stability and durability are critical.