The Interpublic network has picked up the pan-European and Latin America accounts from Bartle Bogle Hegarty, which had worked on the business for seven years.
The European account will be led out of DLKW Lowe. UK spend on the Persil account is £6.5 million, according to Nielsen.
Lowe devised the "dirt is good" positioning for the Persil/OMO brand and previously held the business in 70 per cent of markets, including the US and inAsia.
A Unilever spokesman said: "As a result of increased globalisation of the brand and the need for consistency across all markets, Unilever's laundry business has decided to consolidate its advertising agencies for the Dirt is Good (OMO/Persil) brand into one agency, Lowe."
BBH will continue to be global lead agency on Unilever’s Surf laundry brands.