Soap

In chemistry, soap is a salt of a fatty acid. Soaps are mainly used for surfacants for washing, bathing, and cleaning.

Physical appearance
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Season one
It was used in a trap to capture the Ghost of Captain Cutler.

Shaggy Rogers was forced to cook for the Ghost of Redbeard and his men, and since he thought he was cooking for real ghosts, he didn't think they would mind soap. When Redbeard told Shaggy and Scooby-Doo to test it for him, they hiccuped bubbles, which they used as an escape.

Scooby-Doo used it in his evening bath at Colonel Beauregard Sanders's mansion.

Appearances

 * Scooby-Doo, Where Are You!
 * 102. A Clue for Scooby Doo
 * 114. Go Away Ghost Ship
 * 116. A Night of Fright is No Delight