Royce Yuen, chairman of Ogilvy & Mather Hong Kong, will shift to a new role as executive director of beauty & health group Fancl.
Yuen, who rejoined Ogilvy in 2003 after a role as executive director of the HK Futures Exchange, has been responsible for running the group's Hong Kong operation.
He has also served as chairman of the 4As since 2005.
As executive director of Fancl, a Japanese headquartered group, he will take on the task of taking the brand global.
“I'm taking up a different challenge by joining the client side,” he told Marketing.
“The brand has experienced tremendous growth in Hong Kong and China. It will celebrate its 30th anniversary next year and has the vision and commitment to make the brand truly global.
"I am very excited with this opportunity and have the confidence to build FANCL into a global powerhouse in the beauty and health category."
Under his tenure at Ogilvy, the agency was named Agency of the Year for three years running by Marketing magazine.
In his capacity with the HK4As, the body has also forged greater ties with the Hong Kong Government.
Paul Heath, Ogilvy & Mather Asia Pacific CEO, will act as caretaker of the Ogilvy Group of companies in Hong Kong until a replacement is found.
Yuen's final day with Ogilvy is 15 January next year.