Before and after photos in UK clinic advertising: what the CAP Code requires

The Advertising Standards Authority's guidance on before and after photos, published in June 2025, states the position plainly: the Authority regards these photographs in the same way as testimonials. That classification is what turns an image into a documentary obligation.

Rule 3.47 requires a marketer to hold documentary evidence that a testimonial is genuine, together with contact details for the person who gave it. Rule 3.48 requires the testimonial to relate to the advertised product. Rule 3.49 requires any factual claim inside it to avoid misleading. Rule 3.50 requires permission before the testimonial is featured.

Rule 3.7 sits above those duties and sets the timing: documentary evidence has to be held before the marketing communication is distributed or submitted for publication. A clinic that assembles proof after a complaint has already failed the rule.

The Authority has been specific about the form that evidence takes. In The Dental Suite ruling of 13 December 2017 and the EF Medispa ruling of 20 February 2013, the requirement described is signed and dated proof that the photographs are genuine and remain unmanipulated.

That standard is more demanding than it sounds. A clinic needs a record linking a named patient to an identified pair of images on an identified date, signed by that patient, plus a way to show the images stayed unaltered between capture and publication.

A folder of exported files with modified timestamps satisfies none of that. Neither does a screenshot of a message thread in which a patient says the treatment helped.

Rule 3.11 prohibits misleading consumers by exaggerating the capability or performance of a product, and a photograph can breach that rule even where the treatment itself performs as claimed. The Authority has upheld complaints on exactly this ground.

In the Laser Treatment Clinic ruling of 22 August 2018, the advertiser confirmed that the before and after images were of people who were clients of the clinic and that the images indicated results a patient could expect. The Authority found the advertiser held no proof that the images were genuine and no evidence that they were representative of the effect a consumer could expect.

In the Smiles Powder UK ruling of 29 May 2019, on teeth whitening, the advertiser submitted clinical trials and customer testimonials. The Authority still concluded that the full body of evidence fell short of substantiating the claim that a perceptible whitening effect would be visible after one use.

The same guidance records the other outcome. Where an advertiser could substantiate the efficacy shown in the photographs, the Authority has declined to uphold, as in The Perfect Cosmetics Company ruling of 7 September 2016 and the L'Oréal (UK) ruling of 20 June 2018. The dividing line is evidence, rather than craft.

Rule 12.12 prohibits advertising a medicine available only on prescription to the public. The Authority's guidance addresses the photographic case directly: before and after imagery of such a medicine, even in isolation and without any accompanying claim, is very likely to be seen as an implied advertisement for that medicine, and therefore a breach.

For UK clinics this bears on any image showing the result of a botulinum toxin treatment. The guidance names Botox, Azzalure and Dysport in that context. An image captioned only with the clinic name still carries the implication the rule addresses.

The practical consequence is that consent, signed proof and substantiation resolve the testimonial question while leaving the prohibition untouched. A clinic can hold perfect evidence and still breach rule 12.12, because the evidence addresses the wrong question.

Where before and after images show a person who has followed a diet or exercise plan, the guidance adds a qualification: a clinic should avoid implying that it can treat obesity by showing a before image of an obese subject, unless the plan is supervised by a suitably qualified health professional.

Rule 12.2 sits behind that point, requiring marketers to avoid discouraging essential treatment for which medical supervision should be sought. The Authority's Pure Clear Minds ruling of 10 May 2023 upheld a complaint about a hypnotic gastric band programme that claimed a 95 per cent success rate with before and after images, where the evidence fell short.

The guidance is direct about qualifications. Superimposed text may clarify, and it cannot convert a misleading impression into a compliant one. Where the advertisement is inherently misleading, it remains so whatever qualification sits beneath it.

The guidance also removes a common assumption. Two photographs can mislead with no label at all, and an unlabelled pair is likely to be read as an implied efficacy claim.

A practice advertising in both markets faces two different tests for the same image, and the divergence is worth knowing because the United Kingdom standard is the stricter of the two on paperwork.

In the United States, the federal layer is the Federal Trade Commission's Endorsement Guides at 16 CFR Part 255. Section 255.1(g) addresses images specifically: using an endorsement with the image or likeness of a person other than the actual endorser is deceptive where it misrepresents a material attribute of the endorser.

The Commission's Example 6 puts the clinic problem in its own words. A page carrying accurate testimonials, accompanied by purchased stock photographs of people with near perfect skin rather than images of the actual endorsers, misrepresents the improvements to the endorsers' complexions. A second illustration finds a truthful testimonial accompanied by a photograph of somebody other than the actual endorser still capable of communicating a deceptive typicality claim.

The United States guidance addresses who appears in the image. The United Kingdom regime adds a documentary record, a permission requirement and, for prescription medicines, an outright prohibition. An image that satisfies the American standard can still fail the British one.

Work through these in order. Each one closes a specific exposure named in the rules above.

This is an interpretation of published regulatory guidance by a brand strategist. Read it alongside the Code and the guidance itself, and take legal questions to a solicitor.

It covers the CAP Code position for non broadcast advertising in the United Kingdom, plus the federal position in the United States. Professional regulators, such as the General Dental Council or the Health and Care Professions Council, add their own requirements in the United Kingdom, and a clinic should check the one that registers it.

The guidance and rulings cited were checked on 21 October 2026. The Authority updates its advice pages, and a fresh ruling can move the standard, so confirm the current text before relying on a specific paragraph.