Saturday, 6 October 2012

DID YOU KNOW ...? (40)

It is believed that in 1780, William Addis developed the first mass produced toothbrush. At the time, the handle was made using a cow bone and it had cow tail-hair bristles. Toothbrushes had a deluxe option which was the one with hog hair until 1938 when the use of nylon took over. 

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