According to Wikipedia, toothpastes or powders came into general use in the 19th century. The Greeks, and then the Romans, improved the recipes for toothpaste by adding abrasives such as crushed bones and oyster shells. In the 9th century, the Persian musician and fashion designer Ziryab invented a type of toothpaste, which he popularized throughout Islamic Spain. Washington Sheffield made the original collapsible toothpaste tubes lead.
Look what I've found in Leiden, The Netherlands. What do you think, who's is it? :)
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