Hello Klean Launches Groundbreaking Out-of-Home Campaign in London
Hard-water haircare pioneer, Hello Klean, has unveiled its inaugural out-of-home (OOH) advertising campaign in London, specifically targeting the city’s most infamous hard-water hotspots. The campaign was officially launched on July 3, 2026, signifying a significant step forward for the British brand as it expands its consumer education efforts beyond digital platforms.
Co-founded by Karlee Zhang and Omer Ozener, Hello Klean was established upon the discovery that hard water, which affects over 60% of UK households, is a major hidden contributor to hair damage, scalp irritation, dryness, and frizz. The brand’s award-winning product line includes filtered shower heads and shower filters that eliminate over 90% of chlorine, heavy metals, and impurities from water. Additionally, they offer a dedicated range of hard-water-optimized shampoos, conditioners, and body washes.
According to clinical trials conducted by Hello Klean, 88% of users reported softer hair and skin, while 85% experienced less frizz after switching to their system.
With more than 90,000 active subscribers, Hello Klean has experienced rapid growth since its feature on the BBC’s Dragons’ Den and a strategic investment from water filtration titan, Brita. The brand’s new London OOH campaign is set to bring their message to tube stations and billboards in the city’s hardest-hit water areas. The aim is to enlighten commuters about an unseen daily issue that many are unaware of.