|
||||
|
||||
| back to november |
 |
Toothpaste Day |
The first known toothpaste was made by Egyptian physicians in 2000 B.C. They mixed powdered pumice stone with wine vinegar and brushed it on with a chewing stick. The Romans later used human urine instead of wine because they thought it whitened the teeth. They were right. Urine continued to be used in toothpaste and mouthwash until the 18th century. Modern toothpastes use ammonia to get the same cleaning action today. |
|
© HiCards All rights reserved.
|
