Glow Nest Photoluminescent pigment or Glow in dark powder is produced mainly from the rare earth elements through a special technology, the pigment can glow for up 20 hours after its 10-minute exposure to a visible light source. Glow Nest glow in the dark pigments are re-chargeable many times over just by exposing it to any light source, preferably those with Ultra Violet rays like Sunlight or UV.Our pigment is also called Night glow powder.