Interfacing holds up hem.  This is a great way to create an invisible hem.  Do not use on transparent fabric. There will come a time when it would be preferable to have stitching of any type showing.  This means creating an invisible hem line.  Even when great care if taken, stitching can show through to the other side.  Particularly on fabrics like silk and satin..  This technique can be used for gowns, jacket hems or [...]