How to have Hairs hackled to do;
<> Size-Sorting
<> Root-Levelling
<> Blending and Mixing (different colors )

<> Hackling is very essential to have hairs
(1) wefted in good quality reducing wefting(sewing) time and
(2) not sheded out from wefts

<> Good Hackling makes different tones and shades of Human hairs mixed to show a color.
<> Hackling makes short sizes of hairs taken apart from a bundle of hairs.