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Social media and influencer promotion of cosmetic treatments

How UK advertising rules apply to influencer and social media promotion of cosmetic treatments, and how to identify undisclosed advertising.

The sell· Reviewed 2026-08-01·Published by Northbank Media
An empty consulting room. What happens in one is largely undefined by law.
An empty consulting room. What happens in one is largely undefined by law.
The short answer

A social media post promoting a cosmetic treatment is a marketing communication if it is controlled by the advertiser and intended to promote a product or service. That brings it within the CAP Code: it must be obviously identifiable as advertising, must not mislead, must not exaggerate results, and must not advertise prescription only medicines to the public. Free or discounted treatment in exchange for a post is payment. An undisclosed commercial relationship is a breach, and it is reportable to the ASA by anyone.

Most people now encounter cosmetic treatment first on social media, and much of what they see is advertising that has not been labelled as advertising. The rules are not ambiguous. Enforcement depends on complaints, and complaints depend on people knowing the rules exist.

When a post is an advertisement

The CAP Code applies to marketing communications, which includes content on a brand's own social channels and content by a third party where there is both payment and control by the advertiser. Payment does not have to be cash. A free treatment, a discounted treatment, a gifted product or an ongoing arrangement is consideration.

Where a post is an advertisement it must be obviously identifiable as such, before anyone engages with it. In practice that means a clear label at the start, not a hashtag buried among twenty others or hidden behind a more button. The ASA has repeatedly ruled on the placement and prominence of these labels.

Alongside the CAP Code, the Consumer Protection from Unfair Trading Regulations 2008 prohibit falsely representing oneself as a consumer, which is what undisclosed advertising does.

CheckpointReading a cosmetic post critically
Is it labelled as advertising, prominently and up frontA hashtag buried in a list or hidden behind more is not adequate disclosure.
Is there a discount code or affiliate linkEither indicates a commercial arrangement, whatever the caption says.
Is a prescription only medicine named or shownNaming a botulinum toxin brand in promotional content breaches medicines advertising rules.
When was it filmed relative to treatmentSame day content shows swelling, not a result.
Who is speaking, and what are they accountable toA registered clinician carries their regulator's standards. A creator carries none.
If the answer is not thisIf a post reads as a personal recommendation and carries a discount code, treat it as an advertisement.

The medicines problem, which nobody mentions

Prescription only medicines may not be advertised to the public in the UK. Botulinum toxin products are prescription only medicines. A post naming a toxin brand, tagging it, or displaying its packaging, in promotional content, engages that prohibition.

This is the single most commonly breached rule in cosmetic social media, and it is breached by clinics as well as by influencers. It is also the easiest to spot, because it requires no judgement about whether a result is exaggerated. The brand name is either there or it is not.

Your rights

What you are entitled to as a reader

  • Advertising that is obviously identifiable as advertising, under the CAP Code.
  • Not to be addressed by someone falsely presenting themselves as an ordinary consumer, under the Consumer Protection from Unfair Trading Regulations 2008.
  • Results content that does not exaggerate or present atypical outcomes as typical.
  • Freedom from advertising of prescription only medicines to the public.
  • To report any of the above to the ASA, free, without being a customer.

Free or discounted treatment in exchange for a post is payment, and triggers the disclosure requirement.

Results content

The same rules on before and after imagery apply on social media as anywhere else. Results must not be exaggerated, atypical results must not be presented as typical, and comparisons must be genuine. Video adds new problems: lighting changes between clips, camera lens differences, and platform beauty filters that may be applied by default without the poster consciously choosing them.

A filter applied to an after clip and not to a before clip is a misleading comparison whether or not anyone intended it. See what the rules require of before and after imagery.

Red flag

A post presented as a personal experience that also contains a discount code. A code is a commercial arrangement. Content that reads as a friend's recommendation while functioning as an affiliate link is precisely the practice the disclosure rules exist to prevent.

How to read a post critically

  • Look for a label at the very start: an advertisement label, a paid partnership tag, or a clear statement of the relationship. Absence where a relationship exists is a breach.
  • Look for a discount code or a link. Both indicate a commercial arrangement.
  • Look for the timeline. Content posted on the day of treatment shows swelling, not a result.
  • Look for who is speaking. A registered clinician making a claim is subject to their regulator's standards. A creator with no clinical training is subject to neither those nor any professional accountability.
  • Look for what is not shown. Recovery, cost, maintenance interval, and the possibility of complications are the four things almost never included.

Clinicians posting on social media

Registered professionals carry their regulator's standards with them onto social platforms. Professional guidance addresses promotion, testimonials and behaviour that could bring the profession into disrepute, and content that would breach the standards in a leaflet breaches them in a video.

This means a poorly compliant clinical account is reportable twice: to the ASA for the marketing, and to the regulator for the professional conduct. Both routes are free.

Content that reaches young people

Marketing rules restrict advertising cosmetic interventions to under 18s, and in England the Botulinum Toxin and Cosmetic Fillers (Children) Act 2021 makes administration for cosmetic purposes to under 18s a criminal offence. Content on platforms with large under 18 audiences engages both. If you see cosmetic treatment promoted in a way that appears aimed at young people, that is specifically reportable. See our guide to the Act.

Reporting it

The ASA takes complaints from anyone who has seen a marketing communication. Screenshot the post with the date and the account name before reporting, because it may be deleted. You do not have to be a customer, it is free, and rulings are published and read within the industry.

For a registered professional, the regulator route runs in parallel. Both are set out in how to complain and to whom.

No commercial links on this page

This article contains no commercial links of any kind. No affiliate links, no sponsored placements, and no links to any clinic, practitioner, brand, product or retailer. Nobody paid for it, nobody previewed it and nobody outside the editorial team saw it before publication.

This publication does not name, rank, rate or review any clinic or practitioner, because it has assessed none of them. Our funding is set out in full on the about page and in our editorial standards.

Nothing here is medical or legal advice. Speak to a qualified clinician about your own circumstances, and to a solicitor about a claim.

Sources

We cite regulators, legislation and clinical institutions, and we link them so you can check the current position yourself. We do not link to clinics or retailers. Regulation in this field changes, so the primary source is always better than our summary of it.

Frequently asked questions

Does an influencer have to label a gifted treatment as an advertisement?

Where there is payment, which includes a free or discounted treatment, and the advertiser has control over the content, the post is a marketing communication and must be obviously identifiable as advertising.

Is a hashtag at the end enough disclosure?

Generally not. The requirement is that the commercial nature is obvious before engagement, so a label needs to be prominent and up front rather than buried among other hashtags or hidden behind a more button.

Can a clinic name a toxin brand in a social media post?

No. Prescription only medicines may not be advertised to the public in the UK, and naming, tagging or showing the packaging of a botulinum toxin product in promotional content engages that prohibition.

Are registered clinicians bound by their regulator on social media?

Yes. Professional standards on promotion, testimonials and conduct apply to social platforms as they do anywhere else, so non compliant content can be reported to both the ASA and the regulator.

How do I report a misleading cosmetic post?

Screenshot it with the date and account name, then complain to the ASA, which accepts complaints from anyone who has seen a marketing communication, free of charge.

When the rules change, we will tell you

One email when a law or a regulator's guidance changes in a way that alters what you should check, and when a new article is published. No treatment offers, no product recommendations and no clinic suggestions, because we do not make any.

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