Ziryab was born in 789.

Ziryab died in 857.

he is a king and he ruled the world

A Muslim polymath named Ziryab, who lived in the Spanish city of Cordoba, invented the earliest deodorant of which we have any record, in the 9th century. There were doubtless other deodorants used, as well, that are not recorded.

William Addis in about 1770.

If you want to know how he did it just go to: http://www.trivia-library.com/a/history-and-story-behind-inventions-toothbrush.htm

Hope this helps!