Alja-Safe® Skin Safe Crystalline-Silica Free Alginate! In addition to being an exceptional skin safe body molding material, Alja-Safe® alginate does not contain free crystalline silica (a known carcinogen). Alja-Safe® also captures detail better than other alginates, giving you a more accurate reproduction of your original. Alja-Safe® is easy to use and cures quickly. It reproduces fine detail and makes and excellent temporary mold - good for one or two reproductions of any body part. You can then cast plaster, or Smooth-Cast® 300Q fast urethane resin into the mold to make a reproduction. NOTE - ALL SPECIFICATIONS OBTAINED USING 80°F / 23°C WATER Working time and demold time can be reduced by using warmer water. Cooler water will give a longer working time and extend the demold time.