Play-Doh was accidentally invented in 1955 by Joseph and Noah McVicker while trying to make a wallpaper cleaner. It was marketed a year later by toy manufacturer Rainbow Crafts. More than 700 million pounds of Play-Doh have sold since then, but the recipe remains a secret.
A nursery school teacher realizes that wallpaper cleaner can be used as a toy.
McVicker showcased the modeling clay at a national education convention in 1955, and word spread to Macy's and Marshall Field's. By 1956, the wallpaper cleaner had become Play-Doh. A year later, the manufacturer offered a softer Play-Doh in primary colors.
As any Play–Doh aficionado knows, September 16th is National Play–Doh Day!. When it was just a fledgling company with no advertising budget, inventor Joe .