 It was also developed in the 18th century by Wilhelm Mülhens and produced in Cologne since at least 1799 and is therefore probably one of the oldest still produced fragrances in the world.On 12 December 2006, the perfumes and cosmetics company Mäurer & Wirtz took over 4711 from Procter & Gamble and has expanded it to a whole brand since then.The "Eau de Cologne" composed by Farina was used only as a perfume and delivered to "nearly all royal houses in Europe".