Glow powder has no COE so works with either soft glass or borosilicate . You can roll your pendant/bead or tube through the powder while hot to pick up an even coating ( knock off surplus) and can then either melt it into the glass surface or encase with clear, pulled into stringers it can be placed on your creation and create delicate patterns . After annealing allow the item to see the sunlight for a few minutes and then it glow in the dark.
