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This Week: Magic Sand from Wham-O
Richard Gottlieb -- Toy Industry Expert Richard Gottlieb -- Toy Industry Expert
For Immediate Release:
Dateline: New York , NY
Friday, August 14, 2020


Last Tuesday, August 11th was declared the first-ever Global Kinetic Sand Day as Spin Master celebrated its “squeezable sand that never dries out.” But, long before Kinetic Sand arrived in 2014, Wham-O used chemistry to create Magic Sand—a toy substance that defied nature.


Magic Sand was the sand that refused to get wet. At first glance, it looked and acted much like regular beach sand, with a granular and free-flowing texture. But in water, Magic Sand displayed its … well, its magic … by repelling water.

Children could mold and build structures that held their shape underwater but disintegrated as soon as they were scooped out. Miraculously, as soon as Magic Sand contacted air, it dried instantly.

Teachers loved Magic Sand because it checked all the boxes for science class experiments; parents loved it because it was non-toxic and didn’t make a gloppy mess.


While Magic Sand seemed to have emerged from magician David Copperfield’s playbook, there was good science behind the hocus-pocus. The secret was in a coating of trimethylhydroxysilane—a silicon-based substance that made Magic Sand water-repellant. While nature-made beach sand is hydrophilic (attracted to water), Wham-O used chemistry to transform Magic Sand into the unexpected: hydrophobic!


Wham-O initially sold magic sand dyed in three colours (red, blue, and yellow) and packaged it in a color-matched bottle with a genie on it. Check out this TV commercial from 1981.

Todd Coopee is Editor-in-Chief of Toy Tales, an online publication that covers toys and games past and present.

Richard Gottlieb

Global Toy Experts / Global Toy News

646 675 3019



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