DIVA’s Perspective — How to Read an Aesthetic Study Without Being Led by Advertising

Every month, there are articles about new technologies, new products, and impressive improvement rates. The numbers are then placed on advertising posters: fewer wrinkles, increased collagen, improved scars, or brighter skin after a certain number of sessions.

The problem is not that all research is wrong. The problem is that a scientific result can be taken out of context and turned into a promise for a different product or service. Clinics need to know how to read evidence before applying it to consultations.

• Cell studies are not the same as human studies

An active ingredient may create a positive response in the laboratory but may not necessarily pass through the skin barrier, reach the necessary concentration, and produce similar results in people.

Animal research is also an important step, but it cannot replace clinical trials. When advertising uses the phrase “scientifically proven,” it is necessary to ask at what level the science exists.

• Is the number of participants large enough?

A report involving ten people may provide an early signal, but it is difficult to represent thousands of clients with different skin tones, ages, conditions, and habits.

Aesthetic studies often have small samples because they are expensive and difficult to follow over time. This does not make the research worthless, but clinics need to reduce the level of certainty when interpreting it.

• Is there a comparison group?

If everyone receives treatment and their skin looks better afterwards, it is not yet possible to know whether the change came from the treatment, home care, time, photography lighting, or the evaluator’s expectations.

A control group, split-face comparison, or comparison with a standard method makes findings more reliable. However, every design has limitations and needs careful reading.

• Are results measured by instruments or by perception?

Some studies use instruments to measure hydration, pigmentation, or elasticity. Others use images and evaluator scores. Some only ask clients about satisfaction.

Each type of data answers a different question. Client satisfaction does not necessarily mean that skin structure has changed greatly. Conversely, a small improvement on an instrument may not create a clearly visible difference.

Advertising posters often select only the most attractive number without explaining how it was measured.

• How long was the follow-up period?

Images after one week may reflect swelling, water retention, or a temporary effect. With filler, botulinum toxin, resurfacing lasers, and biological products, follow-up needs to be long enough to understand the true effect and later reactions.

A three-month study cannot prove an effect that lasts many years. A clinic should not extend a promise beyond the study period.

• Is the product in the study the exact product being sold?

This is especially important for exosomes, skinboosters, laser devices, and cosmetics. A study of product A does not prove that every product in the same category has similar effectiveness.

Device settings, energy source, treatment tip, concentration, and manufacturing process can all differ. Research from a large brand should not be used to advertise a product of unclear origin.

• Who funded the study?

Research funded by a manufacturer is not automatically wrong. However, it is important to check whether authors disclose conflicts of interest, whether data were evaluated independently, and whether unfavourable results were reported fully.

An article that emphasises only benefits and does not describe adverse reactions needs to be read cautiously.

• Statistical significance does not necessarily mean significance to the client

A change can reach statistical significance but be very small in aesthetic terms. Clients do not care that a measure changed by 3% if they cannot see a difference.

Clinics need to turn research results into practical questions: Can the client see improvement? How many sessions are needed? What is the downtime, cost, and risk?

• Systematic reviews can still have limitations

Reviews and meta-analyses rank higher than a single study, but their quality depends on the studies included. If most studies are small, heterogeneous, or have a high risk of bias, the combined conclusion still needs caution.

For example, recent reviews of exosomes have found positive signals while also highlighting the lack of standardisation and long-term data.

DIVA’s Perspective

DIVA does not need to turn its website into a scientific journal. The goal is to translate research into information clients can understand without exaggeration.

Every update should answer four questions: What does the research say? What has it not proven? How is the result relevant to services at DIVA? And what should the client do next?

When evidence is still early, say clearly that it is “being studied” rather than “proven.” When results depend on a product, state the exact product name. When research does not apply directly to DIVA, it should not be borrowed to sell a service.

Conclusion

Reading aesthetic research is not about finding one attractive number for advertising. It is a process of assessing the design, participants, measurement method, follow-up period, product, and limitations.

A trustworthy clinic does not need to be the first to use every new technology. What matters more is knowing when the evidence is sufficient to apply it, when caution is needed, and how to explain it honestly to clients.

This is why DIVA’s Research & Aesthetic Updates section should publish only when the content has real value, rather than following every new item in the market.