In this article: highlights from the Garnier SUPER UV influencer event, where a credit-card-sized UV indicator brought sun care science to life.
For the launch of Garnier SUPER UV, USP Solutions developed a pocket-sized UV indicator card that turned invisible UV exposure into a visible colour change in seconds. The card was the centrepiece of the influencer event in Paris, giving content creators a simple, photogenic proof point they could share live with their audiences.
The brief
The Garnier team needed a way for influencers and beauty journalists to experience the difference SUPER UV protection makes, not just hear about SPF and PPD ratings. Our brief was to create a demo that worked in any lighting, photographed well on social, and was unambiguous enough that even a 15-second video would tell the story.
The demo
The UV indicator card uses a photo-reactive pigment that shifts colour when hit by UVA and UVB rays. Influencers applied SUPER UV to half of the card, exposed it to daylight or a controlled UV lamp, and watched the unprotected half turn deep purple while the protected half stayed pale. The before/after contrast made the protective effect obvious to anyone watching, including their followers at home.
Why this kind of demo works
Sun protection is one of the hardest claims in beauty to prove because the active ingredients are invisible. By translating SPF and PPD into a colour signal, the demo created the “a-ha” moment that pure data cannot. It was easy to scale: the same cards were later distributed in pharmacy training kits and used in retail point-of-sale displays across Europe.
For more on how we use indicator-based demos to make invisible claims credible, see our piece on the psychology of consumer belief in product demos.
How brands can apply this format
The Garnier SUPER UV card is a useful template for any brand whose claim is invisible to the naked eye, SPF, anti-pollution, antibacterial, anti-blue-light, or odour neutralisation. The pattern is the same: take an invisible exposure, make it visible in seconds with a low-cost physical indicator, and give creators a moment they can capture on camera without needing a studio or a script. The card-sized format is deliberate, because it slots into a creator's existing content workflow rather than asking them to build a set around it.
If you want to deploy this kind of asset, start by listing the three claims on your product that consumers cannot see for themselves. For each one, sketch a single physical indicator that would change colour, glow, lift, or dissolve under the relevant trigger, and prototype it with whatever is on the bench. The point is to find one moment of visible proof per claim, then build the activation, retail card, sampling kit and creator pack around that one moment, instead of inventing a new asset for every channel.
One more lesson from the SUPER UV event is worth carrying into your own planning: design the asset so creators can use it more than once. A card-sized indicator that fits in a pocket gets pulled out at the beach, at the school run, in the car, long after the campaign launch window has closed. That long tail of organic content is often more valuable than the launch coverage itself, because it arrives when the brand is not paying for attention and it carries the credibility of unprompted use.
The other point worth carrying forward is the role of physical assets in a digital-first launch plan. A small, well-designed physical object often outperforms a much larger digital spend, because it gives creators and consumers something to hold, react to and share without needing a production set. The SUPER UV card is one example, but the principle applies across the category: invest in one excellent physical artefact per launch, and let the digital plan amplify it, rather than the other way around.