The cap of human lace wigs is made entirely of French (stock lace wigs) or Swiss lace (custom lace wigs may be ordered in French or Swiss lace). Strands are hand-tied to the lace. Knots are blended so they are not seen. The knotting technique allows natural hair flow for multi-directional hairstyling.
Different hair knotting techniques are used to knot hair into the base of human lace wigs, providing different performance and results. The quality of the wigmakers workmanship will have a great impact on the finished look.
Single knots for human lace wigs are considered the best method of knotting producing a tiny knot for each individual hand-tied hair. Two or three individual hairs can be single knotted at one time speeding up the process to the detrimental of creating a larger knot with less aesthetically pleasing finish.
Double knots for human lace wigs literally involve knotting hair twice to produce a double knot which provides a stronger, more robust knot. The resultant knots are however even more visible under close inspection. This is a particular problem when trying to create a natural hairline and for this reason most front hair lines should be single knotted on a flesh tone lace material of the human lace wigs.