
In practice, it’s much more delicate, especially when you’re working in video, where performance, story and craft all collide.
Brands use celebrities because they shortcut the two hard jobs of getting noticed and being believed. A familiar actor or musician can turn a routine campaign into something people at least glance at.
Celebrities also bring their own values. When there’s an authentic fit between person and product, audiences tend to accept the story. When there isn’t, they spot the join instantly.
Underpinning all of this is the simple fact that video is now the default language of marketing. Around 9 in 10 businesses use video in their mix, and the vast majority of marketers say it’s a major part of their plans. In that environment, using celebrities in marketing is one way to give your film a fighting chance of being the one people actually watch. blog.hubspot

Traditional celebrity work is endorsement in its purest form. Star walks on, holds up Product X, delivers a line, smiles. It did a job, but it rarely felt like anything more than a transaction.
The better contemporary work treats the celebrity as a character in a story that could plausibly be happening whether the cameras were there or not. That means building the film around how they actually move, speak and think, rather than asking them to squeeze into a generic script.
Listerine’s “Wash Your Mouth” campaign with Cynthia Erivo, produced with Toast, is a good example. Instead of a clinical bathroom, you’re taken backstage and shown pre‑show nerves and the last look in the mirror.
The mouthwash becomes part of the ritual that helps her get ready to use the two things her career depends on: her epic voice and her presence, which is a far more interesting and believable place for the brand to sit. Celebrity Film

The Paloma Faith film for Get Your Guide takes a similar approach. You spend a day with Paloma wandering around London record shops, venues, and corners of the city that matter to her as a performer, with her own commentary running through it.
The brand offers you the tools to build your own version of that day, rather than shouting about “top attractions”. When using celebrities in marketing works, it feels like the film has been wrapped around the person, not the other way round. Paloma Faith Film
Video has become the canvas where most of this plays out. Marketers overwhelmingly report that video improves understanding of their products, lifts awareness, and results in a positive return on their investment. fatguymedia
That’s changed the structure of campaigns. Rather than a single 30‑second TV spot and one cut‑down, brands are commissioning ecosystems of films: long and short, vertical and horizontal, for broadcast, social, sites and streaming.
On the Listerine x Cynthia Erivo project, Toast helped build a social‑first campaign shot on a major virtual production stage. The virtual production setup made it easier to craft environments around Cynthia that would fit her unique style.
The virtual set also enabled the creation of a suite of assets from a single central performance. Toast produced hero-brand films, tighter social cutdowns, and little character moments that work well on social.

A presenter like Claudia Winkleman brings a different toolkit. Her public profile mixes warmth, clipped delivery and a slightly conspiratorial sense that she’s letting you in on something. Using celebrities in marketing only makes sense if you write to that rhythm.
Marketers are not short of hunches, but they do now have numbers that back up why so many campaigns lean on video and why using celebrities in marketing can be a logical extension of that.
Surveys over the past couple of years paint a consistent picture. Roughly 93-99% of video marketers say video helps people understand their product or service, and more than 80% say it has directly increased traffic, leads and sales. Around 9 in 10 say they see good or positive ROI from their video spend. dash
On the audience side, streaming and social video viewing continue to climb. UK adults now spend close to 50 minutes a day on video‑sharing platforms alone, and that doesn’t account for traditional TV or subscription streaming. Globally, time spent watching social video is forecast to keep rising well into the next few years. broadbandsearch
Fold celebrities into that, and you have a medium audiences already favour, a format marketers trust to deliver, and a familiar face that helps your film jump the queue in a crowded feed.
The danger with using celebrities in marketing is believing the fame will do the heavy lifting. At best, it buys you a bit of attention and some borrowed credibility. What you do with that window still matters.
The stronger campaigns tend to share some common traits:
Using celebrities in marketing isn’t about chasing the biggest name on the wish‑list. It’s about choosing the right person to carry a story that feels honest. Take time to build a film that lets them be themselves. But remember, your brand needs to be memorable, not just the celebrity. wyzowl
The biggest concern is reputation risk: if a celebrity is caught in a scandal, says something offensive, or behaves badly, that negativity can quickly rub off on the brand and damage its image. Overexposure is another issue, if a celebrity endorses too many different products, their influence can be diluted.
Celebrities act as mental shortcuts: if a well‑liked or admired person promotes a product, people often transfer their positive feelings about that person to the brand, which can improve attitudes and make purchase more likely. Endorsements increase attention and memory which means ads with familiar faces are more likely to be noticed.
Yes, celebrity endorsements can increase sales, but only when the celebrity, brand, and audience are a good fit and the partnership feels authentic. However, the impact is not guaranteed and varies by execution. Studies show that both celebrities and online “stars” increase purchase intention versus no endorser, but the effect depends on how well the ad’s message matches the type of endorser and the audience’s expectations.