What is the ruling on making ready-made hair extensions from pure synthetic hair and selling them to women and women's salons, knowing that they are used only for special occasions and for a few hours, then removed?

The issue of wigs (hairpieces) is a matter of scholarly disagreement. The preponderant opinion is that their use is permissible out of necessity and to remedy a defect, but forbidden otherwise. The basic principle is that making and selling them is permissible, unless it is known that the buyer will use them for unlawful purposes. It is advisable to avoid this work to steer clear of disagreement and doubt, especially since they are predominantly used for adornment and showing off.