Hindustan Unilever and the Three Habits That Could Change India: The Story of Haath, Munh Aur Bum, Bimari Hogi Kum

There is a particular challenge in public health communication that governments and brands have struggled with for generations: how do you talk about something that people find embarrassing, uncomfortable, or so deeply embedded in daily habit that the suggestion of change feels like an accusation?

https://www.youtube.com/watch?v=izujd5D5NiI

Handwashing sounds simple. Until you consider that it requires the habit to be formed before illness arrives — not in response to it. Drinking purified water sounds obvious. Until you consider the infrastructure gaps, the social norms, and the economic constraints that make the obvious practically impossible for millions. Using a toilet rather than defecating in the open sounds like a basic human behaviour. Until you look at the scale of open defecation in India in 2015 and understand that you are dealing not just with infrastructure but with decades of habit, spatial norms, and the absence of any system that made the alternative reliably available.

These three behaviours — washing hands five times a day with soap, adopting safe drinking water practices, and using a toilet — were, in December 2015, the behaviours that India's own government had identified as central to the mission of Swachh Bharat Abhiyan. They were also, individually, the behaviours at the heart of three of Hindustan Unilever's most important brands: Lifebuoy, Pureit, and Domex.

The alignment between national mission and brand portfolio was, for anyone paying attention, obvious. What was less obvious was how to communicate about all three together, without the message becoming either a lecture or a product catalogue.

The answer, when it arrived, came through a two-minute film, a jingle, and a group of children who made the whole thing feel like a game.

Haath, Munh aur Bum, Bimari Hogi Kum.

A First-of-Its-Kind Programme

On December 4, 2015, HUL announced the launch of Swachh Aadat, Swachh Bharat — a multi-brand behaviour change programme that was, as the company described it, a first of its kind. For the first time in HUL's history, three separate brands — Lifebuoy, Pureit, and Domex — had been brought together under a single communication initiative. Not to compete, not to each tell their own product story, but to jointly advocate for three connected habits that together formed the complete picture of what Swachh Bharat needed from individual households.

The programme operated on two distinct levels. The first was on the ground. Swachh Basti was a behaviour change model piloted in the slums of Mumbai and Delhi — working through municipal corporations to reach students in municipal schools with a four-week programme of skits, demos, and jingles. The schools were the entry point because the children were the change agents. The premise was that children, once educated about a behaviour, became the most effective advocates for that behaviour within their own households — carrying the lesson from the classroom to the kitchen to the toilet, asking questions that adults could not dismiss, modelling habits that parents would feel embarrassed not to adopt.

The second level was mass media. The campaign aimed to reach 75 million people across India with a film in which the three habits were communicated not through statistics or medical authority but through the particular, irresistible energy of children who had been given permission to say something adults normally avoided.

The Three Swachh Aadats and the Jingle That Made Them Stick

The campaign's central creative device was elegant in its directness. Haath stood for hand — wash your hands with soap five times a day. Munh stood for mouth — drink purified water, adopt safe drinking water practices. Bum stood for — well, for the toilet. Use one. Keep it clean. Defecate in a toilet rather than in the open.

The word bum was the campaign's most important decision. In a country where open defecation had been endemic for so long that talking about it directly was considered taboo in polite conversation, the use of bum — funny, childlike, impossible to mistake, impossible to feel entirely serious about — was the creative stroke that made the message accessible to exactly the audience it needed to reach. Children could say it without embarrassment. Adults who might have shut down at a more clinical vocabulary found themselves laughing. And the word, once said, stayed said. It was sticky in the way that all genuinely good public health mnemonics are sticky: because the moment you hear it, you know you will not forget it.

The film deployed a group of children to deliver the campaign's three-part message in the most engaging way possible. The children were, in the brand's language, agents of change — a formulation that assigned them a role of genuine authority and responsibility, rather than the passive role that children usually occupy in advertising. They were not cute props. They were the argument's most credible carriers: people who had no ulterior motive, no product to sell, no embarrassment to manage. Children talking about bum were simply children being children — and in being children, they made a conversation that adults had been avoiding feel natural, necessary, and even joyful.

The jingle that accompanied the film was designed to work the way all great public health jingles work: by encoding the message in a melody that the ear could hold and the mouth could reproduce without effort. Haath, Munh aur Bum, Bimari Hogi Kum was not just a campaign tagline. It was a mnemonic — three words that covered the three habits, in sequence, with the payoff of reduced illness at the end. Each morning, each mealtime, each visit to the toilet, the jingle was there as a reminder of what these moments required.

The Scale Behind the Campaign

The Swachh Aadat, Swachh Bharat programme was not a standalone advertising initiative. It was an extension of what HUL had already been building for five years through the Unilever Sustainable Living Plan — a global commitment to help more than a billion people take action to improve their health and well-being.

In India alone, by the time the 2015 programme launched, HUL had already touched 120 million people through its health and hygiene programmes. Lifebuoy's handwashing initiatives had reached 63 million people. Pureit's safe drinking water programme had touched 56 million lives. The Domex Toilet Academy had built over 3,000 toilets. These were not advertising claims — they were programme outcomes, documented and reported as part of Unilever's sustainable living commitments.

Sanjiv Mehta, Managing Director and CEO of HUL at the time, placed the campaign within the company's understanding of its own responsibility: "We believe that companies like HUL have a key role in helping the country achieve Swachh Bharat Abhiyan. More than 90% of households in India use HUL products. This gives us both an opportunity and responsibility to make a meaningful difference."

The figure of 90% household penetration was not rhetorical. It was the specific reason why HUL — more than almost any other company in India — had both the platform and the obligation to use its communication reach for behaviour change at national scale. When 90% of Indian households already have a relationship with your products, the question of whether you have a responsibility to those households goes beyond commerce.

Five Lessons We Should Learn From This Campaign

1. Multi-Brand Coalitions Can Do What Single Brands Cannot

The Haath, Munh aur Bum campaign was made possible by something that rarely happens in marketing: three separate brands — Lifebuoy, Pureit, and Domex — temporarily set aside their individual identities to tell a single, bigger story. Each brand had its own product category, its own communication history, its own consumer base. But the three habits they each addressed — handwashing, safe water, toilet use — were not three separate messages. They were three parts of the same message about hygiene, and the whole was more powerful than any of the parts.

The lesson: when a brand's product addresses one dimension of a larger social problem, and competitors or sister brands address other dimensions, there is a creative and social opportunity in coalition. A programme that says these three habits together is more useful, more memorable, and more actionable than three separate programmes each saying this one habit. The willingness to subordinate a brand's individual story to a larger truth is rare — and when it happens, the results can be transformative.

2. Children as Agents of Change Are the Most Credible Public Health Messengers

The choice to make children the campaign's primary communicators was not simply a creative decision. It was a strategic one, rooted in understanding how behaviour change actually works in Indian households. Adults who are told to change their behaviour by other adults — especially by authority figures, brands, or government communications — are often resistant. The message triggers defensiveness, cynicism, or the comfortable assumption that they already know what they are being told.

Children who arrive home from school and ask their parents kya tumne haath dhoye? — have you washed your hands? — are a different force entirely. They are not figures of authority. They are figures of innocence and earnestness. And the parent who would dismiss an advertisement does not dismiss a child's genuine question.

The lesson: in behaviour change communication, the most effective messenger is often not the most authoritative one. It is the one whose sincerity is beyond question. Children, by asking without guile the questions that adults have learned to avoid, become the most powerful advocates for habits that adults need to form but resist being told to form.

3. Humour and Embarrassment Can Be the Best Public Health Strategy

The word bum was funny. It was embarrassing in a childlike way. It was exactly the kind of word that makes adults smile involuntarily and children say with relish. And it was the word the campaign needed, because the behaviour it was associated with — defecating in the open — was a behaviour so deeply embedded in daily habit, so surrounded by infrastructure limitations and social norms, that approaching it with gravity and seriousness would have closed the audience before the message arrived.

The jingle's cheerful, sing-song energy; the children's unselfconscious delivery of bum; the lightness that the campaign brought to a subject that public health authorities had consistently treated with either clinical distance or moral authority — all of these were deliberate and effective. Laughter lowered the defences that seriousness had failed to penetrate.

The lesson: the most sensitive topics in public health — sanitation, sexual health, mental health — are often the ones most in need of a lighter creative touch. The communication that acknowledges the discomfort, names it, and then defuses it with warmth and humour creates more lasting behaviour change than the communication that treats the discomfort as something to be overcome through information.

4. A Jingle Is the Most Democratic Form of Mass Communication

The Haath, Munh aur Bum jingle was designed to work across literacy levels, across languages, across ages, across the enormous diversity of a country where a single national campaign must reach audiences with almost nothing in common except the habits it is trying to change. A jingle does not require reading. It does not require sustained attention. It requires only hearing — and once heard, a well-constructed jingle does not require memory to be retained. It installs itself.

For a campaign aimed specifically at the slum populations of Mumbai and Delhi — communities with limited media access, varying literacy levels, and high susceptibility to the diseases that poor hygiene enables — the jingle format was not a creative flourish. It was the most appropriate communication technology available. The lesson: in campaigns aimed at mass behaviour change across diverse and underserved audiences, the creative form that works is not the most sophisticated one. It is the most accessible one. And accessibility, at true mass scale, often means a jingle, a mnemonic, a rhythm that the body can hold.

5. Corporate Scale Comes With a Communication Responsibility That Advertising Cannot Discharge Alone

HUL's claim that 90% of Indian households used its products was not a boast. It was a description of the foundation on which the Swachh Aadat, Swachh Bharat programme was built. A company with that reach is not simply a commercial entity. It is a communication infrastructure — a system through which messages can be carried to a population at a scale that governments and NGOs cannot easily replicate.

But the campaign recognised that communication alone was insufficient. The on-ground Swachh Basti model — working through municipal corporations, reaching school students directly, building the four-week behaviour change programme — was the acknowledgement that a TV jingle does not change behaviour. Behaviour changes when the conditions for it are created: when children are educated in schools, when parents are reached through those children, when doctors and support groups are engaged, when the habit is practised, reinforced, and celebrated rather than simply advertised.

The lesson: for companies with genuine mass reach, the most meaningful social communication programmes are those that connect advertising to action — where the film drives awareness and the on-ground programme creates the conditions in which awareness becomes behaviour. The brands that treat social communication as something that ends at the media buy will always underperform relative to the brands that treat it as the beginning of a behaviour change journey that must be accompanied, not merely announced.

The Three Habits That India Needed

Haath. Wash your hands. Five times a day. With soap. Before you eat. After you use the toilet. The habit that costs almost nothing and prevents the diseases that cost everything.

Munh. Drink purified water. The habit that removes from the water you consume the pathogens that the water's journey from source to glass has collected.

Bum. Use a toilet. Keep it clean. The habit that, taken together by enough people, transforms the ground and water of a community from vectors of disease into safe spaces for living.

Three words. Three habits. One jingle. A two-minute film with children who said bum without embarrassment and made the adults watching them feel, for a moment, that maybe they could too.

Hindustan Unilever, in December 2015, put its three biggest hygiene brands behind a single message. Not because it was the most profitable thing to do. Because it was, in Sanjiv Mehta's own words, the right use of what 90% household penetration actually means — an opportunity and a responsibility, arrived at simultaneously, in the shape of a child saying bum into a camera with a joy that made the whole country listen.

Haath, Munh aur Bum, Bimari Hogi Kum.