Product list Colored glow in the dark blue powder dust Colorful glow in the dark powder red white blue Glow in the dark longest lasting powder Glow in the dark epoxy powder colours Glow in the dark colored pencils powder Photoluminescent glow in the dark powder is actually called phosphorescent pigments. This powdery substance absorbs light and then re-emits it over a length of time. This occurs when electrons absorb energy in the presence of light and move up to a higher orbit. In the absence of light energy, these same electrons fall from a higher energy level to a more stable energy level. When this occurs, they emit energy in the form of visible light. No chemical reaction actually occurs.