Plaster of Paris is a white powdery slightly hydrated calcium sulfate CaSO4·¹/₂H2O or 2CaSO4·H2O which is made by calcining gypsum and used chiefly for casts and molds in the form of a quick-setting paste with water. It is a great material to use for basic sculptures and craft projects because it is easy to prepare and sets in a few minutes. The hard plaster produced when this powder is mixed with water is a fully hydrated form of calcium sulphate.
Disclaimer: Store at a cool room temperature.
Powder 100g : Water 30-35g