I love Fray Block. It has multiple uses. This liquid plastic can be applied to fibers & ribbons to prevent fraying and is also excellent for securing threads. I use it to stiffen the ends of cord to make threading beads onto the cord easier. Sometimes I use it to secure the ends of a braid before glueing into an end cap. It is designed to dry clear and it also dries quickly. Fray Block comes ready-to-use with an ultra-fine nozzletip which allows for precise application. Check out my blog,
1-1/2 oz. tube
Check out my blog article, "Some Talk about Finishing Cord Ends"