“ The world’s oldest - known formula for toothpaste, used more than 1,500 years before Colgate began marketing the first commercial brand in 1873, has been discovered on a piece of dusty papyrus in the basement of a Viennese museum, ” the Electronic Telegraph reports.
પ્રાચીન ઇજિપ્તમાં લોકો ટૂથપેસ્ટ કેવી રીતે બનાવતા?