The non-toxic, non-staining, reusable modeling compound that came to be known as 'X' was originally a pliable, putty-like wallpaper cleaner concocted by Noah McVicker for Kutol Products, a family-owned Cincinnati-based soap company. It was originally composed of flour, water, salt, boric acid, and mineral oil. Following World War II, McVicker's nephew, Joseph McVicker, joined Kutol and discovered the wallpaper cleaner was being used by nursery school children to make Christmas ornaments. The product was then reworked and marketed to Cincinnati schools in the mid-1950s and it was named 'X'. 'X's 2004 United States patent indicates it is composed of water, a starch-based binder, a retrogradation inhibitor, salt, lubricant, surfactant, preservative, hardener, humectant, fragrance, and color. A petroleum additive gives the compound a smooth feel, and borax prevents mold from developing. 'X's current manufacturer is Hasbro and it is widely used by children today in arts and craft.
Id 'X'
'X'-Playdoh
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