Use Alumidust powders in combination with Alumilite casting resins or Alumisol to achieve beautiful effects in your casting project. Use Alumidust sparingly as a small amount goes a long way. Alumidust is non toxic and can be brushed into the mold or added to your casting material. To achieve the brightest look, brush the powder into a high gloss silicone rubber mold. The higher the gloss the brighter the look.