You can use ribbon tape to clean- finish the hem of most garments constructed of light and medium fabrics.
You can purchase ribbon tape online or at your local fabric store in the color of your choice. The beauty of this handy functional trim is that it provide woven in stitch lines which you can conveniently follow in the machine stitching process. When topstitching a garment's hem, these stitch lines are beyond helpful!
In the application process, the ribbon tape is treated much like a twill tape hem finish- the ribbon tape is first aligned and topstitched to encase the raw edge of the hem allowance, after which the hem is folded up at the hem allowance distance and the unstitched edge of the ribbon tape is topstitched to the garment layer following the (convenient) woven stitch guide on the ribbon tape.