MIT Sloan
Global Innovation & Leadership
Test your product on real skin. Back your claims.
Stella runs product claims studies for skincare brands. People use your product at home and scan as they go. You get the claims their results support, with the scans behind them.
4 to 12 weeks, set by your product. Scores tested against dermatologists.
The numbers behind every study.
Every study runs on the same 21 scores, tested against themselves and against dermatologists.
0.94
Stable
How steady a person's trend is when their skin hasn't changed, averaged across all 21 scores. 1.0 is perfect.
1.4 points
Precise
A 30-person study can detect an average change of about 1.4 points out of 100.
92%
Checked against dermatologists
On six signs, Stella agrees with dermatologists 92% as closely as they agree with each other. Against the two with no financial interest in Stella, 96%.
- Fine lines0.98Excellent
- Breakouts0.98Excellent
- Sagging0.97Excellent
- Redness0.94Excellent
- Pigmentation0.91Excellent
What your team gets.
Marketing: claims your results support.
The change measured across the group, on the scores you agree before the study starts. For example: "Visible redness reduced on average, measured at home."
Content: before-and-afters you can publish.
Each person's scans in order, with what they noticed as they went.
Product: what happened in real use.
How often people used it and when change started.
What a Stella record shows.
Every scan adds to a trend, so you can see when change started and whether it held. Higher is better on every score. Three real records, de-identified.
- Niacinamide serum started
- Median before: 56.9
A niacinamide serum started on 21 Feb. Over the next eight weeks, redness scores settled above their earlier range: a median of 56.9 before, 67.2 after.
- Retinoid serum started
- Before: 56.4
A retinoid serum started on 3 Oct 2025. Pigmentation scores rose gradually from about month seven, peaking at 65.0 in July 2026, with no early dip.
- Laser logged in the app
- Stella alert
Marks appeared on 8 Jul, after a laser logged in the app. Stella flagged the change on 10 Jul, two days later, and the score was back to its usual level by 18 Jul.
One person's record shows what Stella can see. Claims about a product come from group results.
What you'll learn along the way.
The words your customers use
For your product page and ads.
“It made me more consistent, and more thoughtful about what I use and why.”
What they expected, and what they noticed
Week by week, beside their scans.
“No irritation so far. Now I'm waiting to see what the scans show.”
Who it suited best
By skin type and routine.
“The oil felt too heavy for my skin, with the congestion I get.”
The questions they ask
What people want to know about their skin, asked in Stella.
“Is my skin improving since March, and is anything in my routine working against it?”
Stella members, in their words, paraphrased.
What comes with every claim.
A documented capture standard
Every scan is taken the same way: same framing, locked camera settings, the same light, and checked before it counts.
Every scan, over time
Every scan from the first week to the last, so you can see when change started and whether it held.
The plan, set first
What's measured and how it's analysed is fixed and dated before the study starts.
Approved claim wording
The exact sentences your data supports, with the study details. Use them word for word and we stand behind the data.
The study file
Protocol, analysis plan, audit trail and report.
How it runs.
Pick one product
We agree the scores that matter for it before anything starts.
Recruit the people
Stella can recruit members, or you can bring your own.
They use it at home
And scan on their own phones, for 4 to 12 weeks.
Your report
Two weeks after the last scan.
Built across innovation, engineering and medicine.
Co-founded by Dr Alice Rudd, dermatologist and Fellow of the Australasian College of Dermatologists.
Purdue University
Engineering
Monash University
Medicine
Institutions are listed for team background only. No affiliation or endorsement is implied.
Talk to us about a study.
Tell us about your product.
Prefer to talk?Book a 30-minute call →
Questions
How is this different from a clinic study?
People use your product at home, in real life, and scan on their own phones. You get the measured result, plus the before-and-afters and what people did and asked, from the same study.
What can we say publicly?
Claims about how skin looks, from the group's results on the scores agreed at the start. We help you word them. For example: "Visible redness reduced on average, measured at home." Each claim also says how long people used the product and how many took part.
Who takes part?
Australian adults who use Stella, matched to your product by skin type, concern and age. Or bring your own customers: they take part through the Stella app.
How much does it cost?
Less than buying a claims study, a content shoot and consumer research separately. It runs at home on our own platform, with people already using Stella, so you don't pay for a clinic, recruitment or a separate shoot. Tell us about your product and we'll send a quote within two working days.
How long does it take?
4 to 12 weeks on product, depending on what you want to show, then your report two weeks later.
Which products?
Skincare used at home.
Stella provides personalised skincare suggestions based on your skin's appearance. These are appearance-level observations, not therapeutic advice. Stella is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. If you have a skin concern, please consult a healthcare professional.