Alex
I think what you mean is highly reflective paint, or does it actually glow in complete darkness?

Eric points out that glow tape must be charged and gets dimmer.

"Real" glow paint had radium in it to continuously charge it and isn't readily accepted by the EPA.

My dogs vest has some reflective tape that shines like a spotlight in a light beam. So if you need to find it without a light beam, you need a chemical that absorbs light and slowly re-emits it and as I recall from my childhood it gets dim quickly.
Jim