Water beads are non-toxic round balls made out of sodium polyacrylate. When water beads are in the water, they expand in size. They are also biodegradable.

How do you shrink water beads?

Just add water when they begin to shrink and drain off the excess water after 4-6 hours. You may also allow the water beads to fully dehydrate in their glass vase or container. Just fill the container with water and drain after 6 hours – Presto! Your beads will return to full size.

How much do water beads expand?

A single 10 gram packet of water beads expands to over 2 cups of beads.