WARNING This product is for making molds of clay and industrial patterns only. When mixed with water, White Hydro Cal hardens and then slowly becomes very hot. DO NOT attempt to make a molds enclosing any part of the body using this material. Failure to follow these instructions can cause severe burns that may require surgical removal of affected tissue. Dust from products may cause eye, skin, nose, throat, or respiratory irritation. Use eye, skin, and respiratory protection in accordance with good industrial hygiene practices. Read MSDS of product for specific details. Product safety information: 800-507-8899. KEEP OUT OF REACH OF CHILDREN.