Is your skincare actually working?Let your face be the control group.
Use a product on one side of your face only. SplitSide measures both sides in the same photo, so lighting, sleep and weather cancel out.
The demo needs no camera and is clearly marked as example data.
One photo, measured twice
One map of your whole face.
YouCam AI maps your skin. SplitSide divides that map at the middle of your face.
Product on one side, nothing on the other.
The treated cheek gets the product. The control cheek stays as it is, in the same photo.
Everything else cancels out.
Light, sleep and weather reach both sides equally. What's left is the product's effect on your photos.
- Light: cancelled
- Sleep: cancelled
- Weather: cancelled
- Product effect
How a trial works
One selfie every two days. Hydration trials run about a week; acne and redness about two.
Day 1
One side
Tell SplitSide what you're testing and what it should improve. It flips a coin to pick the cheek. The product goes there only, and three baseline scans record how your two cheeks already differ.
Left: productRight: nothingEvery two days
Same photo
Take one guided selfie. Photos lit from one side are rejected before they count. YouCam AI Skin Analysis maps each concern, and SplitSide measures that map on both halves of the same photo.
- Face centred
- Even light
- Still
End of the trial
Real answer
Statistics decide, not a chatbot's guess. You get a plain answer with a confidence level and, if it isn't working, a return request drafted before the return window closes.
- Working
- No real difference
- Stop using it
Why before-and-after selfies lie
Compare Tuesday morning with Friday night and you're measuring the clock, the lamp and your sleep as much as the product.
Before and after
| Tuesday, 8 am | Friday, 9 pm | |
|---|---|---|
| Light | Window | Ceiling lamp |
| Sleep | 8 hours | 5 hours |
| Skin | Just woke up | Just washed |
| Weather | Humid | Dry |
| Product | Not yet | In use |
Five things changed. Which one did it?
Split-face
| Treated | Control | |
|---|---|---|
| Light | Same on both sides | |
| Sleep | Same on both sides | |
| Skin | Same on both sides | |
| Weather | Same on both sides | |
| Product | In use | None |
One thing changed. That's the product.
Dermatology research uses this same design, called a split-face trial. SplitSide brings it home. How accurate is it?
Preview before you buy
Try it on half of you and keep the real you on the other half. Previews are simulations from YouCam AI, never measurements, and they never count towards a trial.
- Simulation
Foundation shade
A shade on one half of your face, bare skin or a second shade on the other. See the seam before you buy.
- Simulation
Hair colour
The new colour on one side of your head, your current colour on the other.
- Simulation
Gold or silver?
One gold hoop on one ear, one silver hoop on the other, in the same photo.
Your photos stay on your phone
SplitSide has no accounts, so there's nothing to sign in to and no profile to hand over.
- Stored on this phonePhotos, masks and results live only in your browser's on-device storage.
- Gone from YouCam within 24 hoursEach photo goes to YouCam by Perfect Corp only to be analysed, and YouCam deletes the results within 24 hours.
- Numbers only for the assistantThe trial assistant receives numbers and text, never photos.
- Delete everything, any timeOne button in Settings clears every trial, photo and result.
Built on the YouCam API by Perfect Corp
AI Skin Analysis returns a detection mask for each concern. SplitSide splits every mask at your midline, which turns one whole-face result into a two-sided measurement.
- AI Skin Analysis (HD)
- Skin Simulation
- Skin Tone Analysis
- Fitzpatrick Skin Type
- Makeup VTO
- Hair Color VTO
- Earrings VTO
- Hair Frizziness Detection
- Photo Background Blur
The trial assistant runs on Groq. Product lookups come from Open Beauty Facts, and local weather from Open-Meteo.
Put your next product on one cheek.
SplitSide plans the trial around your return window, so you know whether to keep it, return it or stop while you still can.
No account needed. Everything stays on this phone.