sorry idk where to put this post. PM me
use white string with a black light in front of you. It works well for videos but not outdoors. I’ve never heard of glowing string but I have seen strings glowing. Look at yoyoGstring.com if anything they have it.
I have two glowing strings, so they do exist. No blacklight, they glow.
I need to save these for performances until I can bulk up if need be.
kitty string sells some glow string
or you can spin your own really easily. I have some on a starlite.