If you take one thing from this publication, we would like it to be this. Before and after photographs do more persuading in the non-surgical body market than every specification sheet, brochure and consultation combined, and almost none of them are capable of showing what they are presented as showing.
This is not because clinics are dishonourable. It is because photographing a body accurately is genuinely difficult, doing it consistently across two appointments months apart requires deliberate effort, and there is no commercial incentive to make the second photograph look like the first.
The principle
A comparison is only informative if one thing differs. That is the whole basis of comparison, in photography and in everything else. If a person changes posture, moves the light, stands closer to the camera and acquires a tan between two images, the difference between those images tells you about posture, lighting, distance and tan.
The problem in this category is that all four of those change a torso far more than a modest contour treatment does. A person who has had no treatment at all can produce a startling pair of images in ten minutes with a lamp and a change of stance. That is not a hypothetical; it is a well known demonstration and it is worth doing yourself with a phone, because seeing it once removes the persuasive power of these images permanently.
Lighting, which does the most work
Light coming from above and slightly in front casts shadow into every hollow and under every fold. It creates definition that is not there in flat light, and it exaggerates any unevenness in a surface. Light coming from directly in front, diffused, fills those shadows and smooths everything.
So the standard technique, whether deliberate or accidental, is a before image in raking light and an after image in flat light. The tissue has not changed. The shadow has.
How to check: look at the shadow under the chin, at the edges of any fold, and at the direction of any shadow cast by the arms. If shadows point in different directions or have different hardness in the two images, the lighting is different, and you cannot compare them.
Posture, which does nearly as much
An abdomen that is relaxed and an abdomen that is gently engaged look substantially different. So does a pelvis tilted forward and one tilted back, which changes with foot position, weight distribution and whether a person is standing at ease or at attention. So does the point in the breathing cycle at which the shutter fires.
None of this requires anyone to be trying to deceive. People stand differently when they feel worse about themselves than when they feel better, which means the before image is systematically likely to show a less flattering posture than the after image, entirely without intent.
How to check: look at the feet and the shoulders. If the feet are not in the same position and the shoulders are not at the same angle, the person is not standing the same way, and the abdomen will not read the same way.
“Real client results, no filters, no editing.”
What would have to be true
- That absence of filtering and editing is the only way an image pair can mislead.
- That the two images were taken under matched conditions, which the statement does not address.
- That the pair shown represents typical outcomes rather than the best available.
What is actually established
- Lighting angle, posture, camera distance, focal length, tan and hydration change the appearance of a torso substantially, with no editing involved.
- Selecting the most favourable pairs from a large number of patients is a selection effect, not an editing one.
- Advertising rules assess the overall impression created, which includes what a selected image implies about typical results.
The statement is probably true and mostly irrelevant. Nothing needs to be edited for a pair of photographs to mislead, and the two most powerful instruments, lighting and posture, leave no trace in the file at all.
Camera and distance
Focal length changes proportion. A camera close to a subject with a wide lens enlarges what is nearest to it and compresses what is behind. Standing further back with a longer lens flattens the same body. Phone cameras in particular have wide lenses, and small changes in distance produce visible changes in shape.
How to check: look at fixed reference points. The width of a doorframe, a tile pattern, the position of a wall edge relative to the shoulder. If the background scales differently between images, the camera moved.
Tan, hydration and the day itself
A tan increases the contrast between planes of the body and defines edges. Hydration changes tissue fullness. Salt intake changes fluid distribution. Where somebody is in their menstrual cycle changes both. Whether they have eaten changes abdominal profile substantially. Time of day changes almost everything, which is why clinical photography protocols specify it.
None of these are marginal effects. Collectively they exceed the effect of most treatments in this category, which is exactly why the industry standard of taking the second photograph on a good day is so effective.
When a before and after pair should be disregarded entirely
- When the lighting direction differs. Overhead light exaggerates every contour; flat frontal light removes them.
- When the posture differs. A relaxed abdomen and an engaged one are two different bodies in a photograph.
- When the camera distance or lens differs. Standing closer with a wider lens changes proportions visibly.
- When the skin tone differs. A tan increases contrast and defines edges that were already there.
- When clothing, underwear cut or waistband position differs, which changes where the eye reads a boundary.
- When you cannot see the person's feet in both images, since foot position determines pelvic tilt, which determines the shape of the abdomen.
You are not being asked to become suspicious of every clinic. You are being asked to require one thing: that the two images differ only in the thing being demonstrated. That is not a high standard and very little marketing meets it.
Selection, which no amount of photographic rigour fixes
Even a perfectly matched pair tells you about one person. A clinic treating many people and publishing four pairs is showing you a selection, and the basis of that selection is not disclosed.
The question to ask is not whether the images are real. It is: what proportion of the people you treat get a result like this, and could I see a pair from somebody who was disappointed. The second half of that question is the one that matters, and a clinic willing to answer it is unusual and worth taking seriously.
This connects to the wider problem of how figures are generated in this sector, which we cover in where fat reduction percentages come from.
Where the advertising rules sit
The CAP Code requires that marketing is not misleading, and the test applied is the overall impression created by the advertisement, including what is implied and what is left out. An image pair implying that a shown outcome is typical, where it is not, is capable of being misleading regardless of whether either photograph has been altered.
The published rulings of the Advertising Standards Authority include cosmetic sector cases and are freely readable. Reading a few of them will teach you more about how these claims are assessed than any summary. We set out how to complain in what a body treatment advertisement may not say.
This is a reading skill rather than a treatment, so there is nothing to stop. What is worth noticing is that once you have this method, the photographs stop working on you, and that changes what you notice in a consultation. Several people have described that as the most useful thing they took away from a site like this one.
What to ask for at a consultation
Ask whether they photograph with a fixed setup: same position, same lights, same camera, marked foot positions. A clinic that does has invested in being able to see its own results and will usually be pleased to be asked.
Ask to see a pair where the result was modest. Ask what proportion of patients they would describe as having had a modest result. Ask whether they photograph everyone or only some people, because photographing only the promising cases produces a portfolio automatically.
And if you proceed, take your own photographs, at home, in the same place, at the same time of day, with your feet in the same position, in the same light, before you start. They will be the only comparison you have that was not produced by someone with an interest in the answer.