Contents: 1lb (464g) of superior quality Create-A-Mold alginate molding powder. There is no need for timing with this unique color changing formula. The mixture changes from lavender to pink while mixing and turns white when it is ready for molding. Set time: 3-4 minute average (when mixed as indicated on packaging). Dust-free; Color-changing Non-Toxic; Hypo-Allergenic Crystalline Silica Free. Once opened, expires approximately 3yrs from date of purchase. Yield per 1 lb of Powder: About 9 cups (72 fl.oz. or 2.15L) of material; Average Mix Ratio: 3.5 to 1 (water to powder) by weight [or about a 1 to 1 ratio by volume]. Indicated Usage: creating temporary molds; part 1 of a 2 step process. >>>[[Package contains mixing ratios only. It does not give detailed instructions on how to perform life casting as that is just one of the uses of the product. New users to alginate for life casting: Look up "Luna Bean Baby Casting Kit" for a comlete life casting kit or castingkeepsakes.com/GalleryCK for examples of the process.]]<<< Does NOT contain free crystalline silica (a known carcinogen). Manufactured in the United States.