What is the oldest cosmetic company in the world?

Yardley of London which can actually trace its roots back to 1620 when Jonathan Yardley obtained a royal warrant for the provision of all the soap to City of London. Unfortunately, the details of this were lost in the great fire of London in 1666, and today's Yardley can only claim to go back to 1770, when it is documented that the House of Yardley was founded.