Less Salt Your Way: HPB Singapore's Interactive DOOH & Transit OOH Campaign | Atlas OOH

Health Promotion Board Turns Transit OOH into Interactive Digital-Out-Of-Home

Singapore’s Health Promotion Board has launched “Less Salt Your Way”, a campaign created with TBWA\Singapore to make lower-sodium choices feel more natural in everyday dining.

The idea starts with a behavior Singaporeans already understand: customizing food orders. Asking for extra chilli, leaving out coriander or changing sauces is common, so the campaign reframes asking for less salt, sauce or gravy as another simple personal preference.

That behavioral insight becomes a strong Out-of-Home Advertising platform because the message appears in places where people are already moving through daily routines, including MRT stations and commuter environments.

The campaign was reported by Little Black Book, while brands looking to create similarly contextual public-space campaigns can plan transit, street furniture, DOOH and experiential OOH campaigns with Atlas OOH.

Plan a transit OOH campaign with Atlas OOH

Atlas OOH View: The Mouth Library Makes Health Messaging Memorable

At the center of the campaign is The Mouth Library, an eccentric collection of expressive mouths, each with its own personality and distinctive way of asking for less salt.

The creative system turns a practical request into entertainment. A rapper, a singer and a swoon-worthy Korean drama lead all communicate the same behavior in different ways, reinforcing one simple message: there is no single correct way to ask. Just ask your way.

This makes the work particularly effective as Interactive OOH. Instead of presenting nutrition advice as a static instruction, the campaign gives commuters a visual language they can play with, recognize and personalize.

For marketers exploring interactive executions, Atlas OOH can combine experiential formats, transit environments and digital interaction into one OOH strategy.

HarbourFront MRT Transit OOH Extends the Less Salt Your Way Campaign

The campaign rolls out across Singapore through public health advertising, transit-ooh placements, and out-of-home media, with HarbourFront MRT station becoming one of its most visible physical touchpoints for experiential-ooh engagement.

Inside the station, walls, panels and floor graphics create a more complete takeover rather than relying on a single poster. This type of Transit Advertising builds repetition and scale while people move through the station.

The Health Promotion Board also uses large-format messaging to promote its 10 million Healthpoints giveaway, running from September 22 through November 30, 2026. The promotion includes a social media contest, a daily sure-win mechanic and partner offers at participating supermarkets and eateries.

For advertisers planning multi-format commuter campaigns, Atlas OOH can combine station domination, DOOH, digital panels, floor graphics and other high-frequency transit formats.

Atlas OOH View: QR Codes and Digital-Out-Of-Home Turn Public Health Into Experiential OOH

The Mouth Library adds an interactive layer through QR codes. Commuters can scan the displays, try on different mouths and discover their own unique way of asking for less salt.

This transforms a health-awareness message into an Experiential OOH interaction. Rather than simply seeing an ad, people are invited to participate, create content and carry the campaign idea onto their own phones.

The mechanic is especially useful because it connects the physical environment with a digital response. In modern DOOH Advertising, that bridge between public space and personal device can turn awareness into measurable interaction.

Explore interactive DOOH opportunities with Atlas OOH

Why Personality Works Better Than a Traditional Health Warning

The campaign avoids presenting lower-sodium eating as a restrictive instruction. Instead, it focuses on personal choice, humor and everyday language.

That shift matters because behavioral communication can become easier to process when audiences see familiar personalities and recognizable situations. The different mouths represent different styles, but all lead to the same action: asking for less salt, sauce or gravy, or choosing lower-sodium options while shopping.

The creative also keeps the topic visible without turning it into a lecture. For Outdoor Media, where attention is limited and competition is high, that balance between entertainment and usefulness is especially valuable.

What Marketers Can Learn From The Mouth Library OOH Campaign

• Turn instructions into participation. The campaign makes a health recommendation interactive instead of purely informational.
• Use transit context strategically. MRT environments provide repeated exposure across everyday journeys.
• Create multiple visual entry points. Different characters and mouth styles make the campaign feel varied while preserving one clear message.
• Bridge physical and digital media. QR codes extend the activation from the station into a personal mobile experience.
• Reward behavior. Healthpoints, social contests and partner promotions give audiences an additional reason to act.
• Build a recognizable visual world. The Mouth Library creates a distinctive campaign system that can work across OOH, DOOH and digital media.

Plan Interactive OOH and Transit Campaigns With Atlas OOH

The Health Promotion Board campaign shows how transit environments can become more than media inventory. When creative, context and interaction work together, everyday commuter spaces can become experiential communication platforms.

Plan your next OOH, DOOH, transit or experiential campaign with Atlas OOH.