Insights
How Does Prysm iO Work?
Key Facts
- Technology
- Spectral Rai™ (resonance Raman spectroscopy)
- Measurements per scan
- 700,000+
- Duration
- ~15 seconds
The Scan Itself
You place a fingertip on the device's sensor. There's no blood draw, no fasting, and no discomfort — just a short scan using resonance Raman spectroscopy (hyperspectral scanning) to take over 700,000 measurements and estimate carotenoid concentration in the skin.
After the Scan
Your result appears in the companion app right after scanning, along with a history of your past scans and AI-guided recommendations so you can see how your score changes over time.
Frequently Asked Questions
Do I need training to use Prysm iO?
No special training — the scan just involves holding a fingertip on the sensor.
How accurate is it?
Prysm iO takes 700,000+ hyperspectral absorption measurements per reading and is built on over two decades of carotenoid measurement research. In a Nu Skin clinical study of 46 adults, a Prysm iO prototype tracked carotenoid changes similarly to the established BioPhotonic Scanner S3.
Where can I learn the full details?
See the dedicated Prysm iO page, which is kept as the canonical source for device-specific information.
References
- Ermakov IV, Sharifzadeh M, Ermakova MR, Gellermann W (2005), "Resonance Raman detection of carotenoid antioxidants in living human tissue," Journal of Biomedical Optics 10(6):064028
- Lobo V, Patil A, Phatak A, Chandra N (2010), "Free radicals, antioxidants and functional foods: Impact on human health," Pharmacognosy Reviews 4(8):118–126
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