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How to make water gel
Get some sodium polyacrylate.
Sodium polyacrylate is an absorbent polymer that can absorb up to 400 times its weight. It is found in many absorbent products, such as diapers, and you can buy it online.
It is occasionally sold as " water gel powder, " " slush powder, " or " instant solid powder. " Put on some safety goggles.