Selecting the right laboratory for a moisturiser efficacy study is one of the most consequential decisions in a product development cycle. A well-chosen partner accelerates your timeline, strengthens your revendication dossier and reduces the risk of protocol failure. A poorly chosen one costs time, money and, in the worst cases, a product launch.
Yet the selection process is often underestimated. Many R&D teams default to working with the same laboratory they have always used, or choose based on price alone, without verifying whether the lab actually has the instruments, the panel profile and the regulatory experience that their specific study requires.
This guide sets out the criteria that matter, the questions to ask, and the process to follow to identify the right partner for your moisturiser efficacy study.
Why Laboratory Selection Matters More Than You Think
A moisturiser efficacy study is not a commodity service. Two laboratories can both offer corneometry and TEWL measurements, and yet produce results of very different scientific quality depending on how they manage environmental control, operator training, panel recruitment and protocol compliance.
The consequences of a poorly executed study are significant. Data that fails to demonstrate a statistically significant effect is not just a negative result. It may reflect a methodological weakness rather than a genuine absence of efficacy. Repeating the study is expensive and time-consuming. More critically, if a revendication is challenged after launch, a study with protocol weaknesses provides very limited legal or regulatory protection.
Investing time in laboratory selection upfront is therefore not optional. It is a risk management decision.
The Key Selection Criteria
Scientific and technical expertise
The first criterion is scientific competence in the relevant measurement methods. This sounds obvious, but it requires verification. Asking a laboratory whether they perform corneometry is not enough. The relevant questions are how many hydration studies they conduct per year, whether their operators are specifically trained on the devices you require, and whether they have published or contributed to peer-reviewed research in this area.
Laboratories with genuine expertise in moisturiser testing will be able to discuss the nuances of protocol design with you — the choice of body site, the acclimatisation conditions, the number of readings per time point, the statistical approach. A laboratory that cannot engage at this level of detail should be approached with caution regardless of its price point.
Equipment availability and calibration status
The presence of the right instrument is necessary but not sufficient. You also need to verify that the device is regularly calibrated according to the manufacturer’s specifications, that calibration records are maintained and available for inspection, and that the device model is the one validated in the relevant published literature.
For corneometry studies, the Corneometer CM 825 or equivalent validated device is expected. For TEWL, the Tewameter TM 300, Aquaflux or Vapometer are the standard references. For impedance studies, device-specific validation data should be available on request.
Panel characteristics and recruitment capacity
Panel composition is as scientifically important as measurement methodology. A laboratory may have excellent instruments and trained operators, but if its panel database does not include subjects matching your inclusion criteria, the study cannot proceed as designed.
Key questions to ask include the total size of the panel database, the proportion of subjects matching your target skin type, the average recruitment time for a study of your required size, the geographic origin and ethnic diversity of available subjects, and the procedures for washout compliance verification.
For studies targeting specific populations — dry skin, sensitive skin, mature skin, specific ethnic groups — panel availability should be confirmed before any other criterion is evaluated.
Regulatory experience and documentation standards
If your study is intended to support a revendication in a regulated market, or to be submitted as part of a product safety or efficacy dossier, the laboratory must operate to recognised quality standards.
Good Clinical Practice (GCP) compliance or equivalent is the expected standard for studies with regulatory ambitions. The laboratory should be able to provide documentation of its quality management system, its standard operating procedures for the relevant methods, and examples of study reports that have been accepted by regulatory bodies or scientific reviewers.
Ethics committee approval or equivalent institutional review is also required for studies involving human subjects in most markets. The laboratory should either have its own ethics committee or work with a recognised external body.
Geographic location and international capability
For brands operating in multiple markets, geographic location can be a critical criterion. Studies conducted in a single country may not be representative of a global consumer population, and some markets require locally conducted studies for regulatory purposes.
A laboratory network with sites in multiple countries offers several advantages. It enables multi-ethnic panel recruitment, ensures regulatory relevance across markets, and allows parallel study execution that reduces overall timelines. When evaluating international capability, verify that the laboratory has formal harmonisation procedures ensuring identical conditions and methods across all sites.
Communication and project management
Scientific capability is necessary but not sufficient. The working relationship with a CRO requires clear communication, responsive project management and the ability to adapt when unexpected issues arise during a study.
Indicators of strong project management include a dedicated contact for each study, a clear escalation process for protocol deviations, regular progress reporting during the study, and a transparent timeline for data delivery and report writing.
Requesting references from previous clients in a similar product category is a legitimate and often informative step in the selection process.
A Practical Selection Framework
| Criterion | What to verify | How to verify |
|---|---|---|
| Scientific expertise | Years of experience, number of hydration studies per year | CV of scientific team, publication list, technical interview |
| Equipment | Devices available, calibration records | Equipment list, calibration certificates |
| Panel | Size, skin type distribution, recruitment time | Panel database summary, recruitment timeline examples |
| Regulatory experience | GCP compliance, ethics committee, accepted dossiers | Quality certificates, example reports |
| International capability | Number of sites, harmonisation procedures | Site list, harmonisation protocols |
| Project management | Dedicated contact, reporting frequency, timelines | Reference calls, example project plans |
Common Mistakes to Avoid
Choosing on price alone is the most frequent error. A laboratory that quotes a significantly lower price than competitors is likely cutting costs somewhere — and in clinical testing, cost-cutting usually affects panel size, operator training or environmental control. Each of these directly impacts data quality.
Failing to verify panel availability before signing a contract leads to delays at the recruitment stage, which cascades through the entire study timeline and launch plan.
Not requesting a technical pre-study meeting allows misalignments between your protocol expectations and the laboratory’s standard procedures to go undetected until the study is underway.
Accepting a generic protocol rather than a study design tailored to your specific revendication produces data that is scientifically valid but strategically weak — it answers a general question rather than the specific question your revendication requires.
The International Dimension
Hydration revendications increasingly require international substantiation. The skin hydration needs and expectations of consumers in Japan, Brazil, the United States and Germany are different, and studies conducted exclusively on European panels may not fully represent the target population for a global product.
Multi-country studies conducted simultaneously, with harmonised protocols and centralised statistical analysis, provide the strongest international evidence base. They also allow market-specific revendications to be substantiated locally while contributing to a global dossier.
Identifying laboratories capable of conducting harmonised multi-site studies requires access to a broad and verified network of specialist CROs — a search that traditionally requires months of outreach and qualification.
Find the right moisturiser testing lab in minutes, not months
Identifying a laboratory that combines the right instruments, the right panel profile, regulatory experience and international reach for your moisturiser efficacy study used to require extensive networking and months of qualification work.
Skinobs changes that entirely. The platform brings together over 400 cosmetic testing laboratories across 124 countries, all searchable by method, skin type, geographic zone and study type. Whether you need a single-site dry skin panel study in Europe or a multi-country harmonised programme across three continents, the right partner is searchable, comparable and contactable in minutes.
Stop spending weeks on laboratory outreach. Start your search on Skinobs at skinobs.com/register
