Short answer
The cost of a skincare efficacy study depends mainly on how many participants it has, what is measured, and how much reporting and publication support you want. Because those choices change from one product to the next, studies are quoted individually. This guide explains what moves the cost, so you can scope a study and compare quotes sensibly.
The main cost drivers
Five choices account for most of the difference between one study and another.
Number of participants. More participants means more recruitment, more sampling and more analysis. CheckGen recommends at least 25 participants per group, with a minimum of 20 test participants per group.
What is measured. A single instrument reading, a questionnaire, and a molecular analysis of thousands of proteins are very different amounts of work. Broader measurement gives a richer picture and costs more to run and analyse.
Product type. Topical products, ingestibles and devices can need different protocols, and some need extra safety steps.
Ethics and compliance. Studies on people run under ethics approval. A product that fits an existing approved protocol is simpler than one that needs a new or amended application.
Reporting and publication. A results report is one level of service. Manuscript preparation for a peer-reviewed journal is a separate add-on.
How long a study takes
A study has four stages, and the participant phase is only one of them:
Planning and approvals. Agreeing the design, product handling and ethics coverage.
Recruitment. Finding and screening participants who match the study criteria.
The study itself. Product use and sampling over the agreed length, from about 7 days up to 60 days or more. At CheckGen, study length does not change the rate.
Analysis and reporting. Sample processing, data analysis and the written report. At CheckGen we aim to deliver the report within a week of receiving the processed results.
The biggest timeline risks are slow recruitment, products that arrive late, and changes to the design after the study has started. Locking the design early is the best way to protect the schedule.
How to get a quote you can compare
Two quotes can look far apart when they are really pricing different studies. A clear brief lets providers price the same thing.
Include in your brief:
What the product is, how it is used, and the claim or question you want evidence for
The audience for the results, such as retailers, distributors, publication or internal development
Your preferred study length and how many timepoints you want
Whether you need a published paper, or a results report only
Your target start date and any launch deadline
And ask each provider:
How many participants are in each group, and why that number?
Is there a control group?
What is measured, and how does it connect to your goal?
Is ethics approval included, and who holds it?
What do I receive at the end, and who owns the data and the marketing and publication rights?
What is not included, such as recruitment, product shipping or revisions?
Keeping a study focused without weakening it
Some savings cost you evidence, and some do not.
Usually safe to adjust:
Start with one hero product instead of the whole range
Pick the timepoints that matter for your story, not every possible one
Share product and safety information on time so the schedule holds
Usually a false economy:
Dropping the control group
Changing the design after the study has started
A study that is uncontrolled often cannot support the story you wanted, which wastes the whole spend.
Every CheckGen study is scoped to the product and the question, so we quote each one individually. To discuss yours, tell us about your formulation on the contact page and we will come back with a proposal.
This article is general information. Study design and costs vary by product, provider and scope.