
The review, handled by creativebrief, followed the previous agency Intelligent Marketing going into administration earlier this year.
The water brand, which launched April 2008, will now use WARL to support above-the-line activity, which is handled by Hooper Galton. The agency was appointed to the £4m account at the end of 2007.
Isklar, which means ‘ice-clear' in Norwegian, has listings in high-end department stores such as Harrods as well as grocers such as Tesco, Waitrose, Sainsbury's and Boots.