This powder is a patented, safe, non-toxic, environmentally friendly polymer developed specifically to imitate most of the properties of snow. These polymers can expand 100 times their original size It can be cool to the touch because it is 99% water. It will not melt or blow away, and can be used on almost any surface, indoors out out. Untreated wood and moisture sensitive surfaces should have some sort of surface protection. Adult supervision recommended. Do Not Eat. Not for children under 6 years.