Backed by 20+ Years of Antioxidant Science
Your antioxidant score, revealed in 15 seconds.
Prysm iO is an AI-powered wellness device that scans your fingertip — no blood draw required — to measure your skin carotenoid levels and generate your personalized Prysm Score.
- Scan time
- ~15 sec
- Measurements per scan
- 70,000+
- Scans in our database
- 21M+
2025 TITAN Business Awards
Platinum — Achievement in Technology Innovation
2025 Good Design Award
Personal category, Good Design Awards
How it works
Three steps to your score
A quick, everyday scan turns into a clear, personal read on your antioxidant status.
Scan your fingertip
Rest your fingertip on the Prysm iO sensor. The device captures its reading in about 15 seconds — no blood draw, no waiting.
AI analyzes the scan
Patent-pending Spectral Rai Technology captures over 70,000 hyperspectral absorption measurements, which an AI algorithm interprets in real time.
Get your Prysm Score
Your results appear instantly as a personalized Prysm Score, then sync to the companion app so you can track it over time.
The science
Patent-pending Spectral Rai Technology
Each scan captures more than 70,000 hyperspectral absorption measurements from your fingertip. Spectral Rai Technology reads the light your skin reflects and absorbs, letting Prysm iO noninvasively measure skin carotenoids — the antioxidants your body derives from fruits and vegetables — without a blood draw.
That reading builds on an earlier generation of BioPhotonic scanning, which has generated a database of more than 21 million antioxidant scans from over 10 million people across roughly 50 countries.
Clinically studied correlation
R² 0.75–0.77
In a clinical study led by Dr. Zoe Draelos and published in Food and Nutrition Journal, scans from 97 participants showed this correlation with blood serum carotenoid levels — supporting the scan as a noninvasive proxy for lab testing.
What it measures
Antioxidants, in plain language
Prysm iO measures your skin carotenoid level — a well-studied marker of the antioxidants circulating in your body.
Carotenoids come from what you eat
Carotenoids are natural pigments found in colorful fruits and vegetables — think carrots, leafy greens, and berries.
They act as antioxidants in the body
Once absorbed, carotenoids help support your body's natural defenses against everyday oxidative stress.
Your skin reflects your levels
Carotenoid concentration in the skin correlates with levels in the bloodstream, which is what makes a fingertip scan possible.
Four wellness domains
One score, a full picture
Your Prysm Score connects back to the everyday choices that shape it.
Diet
See how your fruit and vegetable intake shows up in your score, and get a clearer read on your day-to-day nutrition.
Fitness
Track how activity and recovery habits relate to your antioxidant levels over time.
Lifestyle
Understand how sleep, stress, and daily habits may be reflected in your Prysm Score.
Supplementation
Gauge whether your supplement routine is making a measurable difference — and adjust with more confidence.
Recommended pairing
Give your score something to work with
A scan only measures what's there — LifePak is built to help put more there. It's a foundational daily supplement, formulated around the same antioxidant science behind Prysm iO, designed to support the levels your scan is reading.
Diet alone is a hard way to keep up. Matching the antioxidant levels in a single daily LifePak packet through food takes a lot of produce, every single day — most routines fall short of that consistently. LifePak is designed to make closing that gap simple.
- Daily packets covering core vitamins, minerals, and antioxidants
- Built to help close the gap between what your diet provides and what your body can use
- Pairs naturally with your Prysm iO scan routine, so you can watch the difference over time
Add it alongside your Prysm iO order to start closing the gap right away.
Backed by Nu Skin's Prysm iO Money-Back Guarantee. If your Prysm Score shows no increase after 90–100 days on a qualifying product like LifePak+, the product price is refundable — subject to enrolling in a monthly subscription within 7 days of your first scan and continuing it for at least 3 consecutive months. See the FAQ below for details; terms can vary by market.
Individual results vary. LifePak is a dietary supplement, not a substitute for a varied diet. See footer for full disclaimer.
Companion app
Watch your score grow with you
Every scan syncs to the Prysm app, turning one-time readings into a running record of your wellness journey.
- Track your Prysm Score trend over days, weeks, and months
- Log habits across diet, fitness, lifestyle, and supplementation
- Get personalized suggestions based on your latest scan
- Set goals and see progress reflected in future scores
- Revisit your full scan history in one place
Pricing
Starting at $375
Order yours below — includes the device and access to the companion app.
Pricing shown is approximate and may vary by market and promotion. Confirm current pricing before purchase.
FAQ
Frequently asked questions
How long does a scan take?
About 15 seconds. Rest your fingertip on the sensor and Prysm iO captures its reading automatically.
Is there a blood draw involved?
No. Prysm iO measures skin carotenoids noninvasively through a fingertip scan, instead of a blood draw.
What exactly is a Prysm Score?
It's a personalized score generated by an AI algorithm from your scan data, giving you a simple way to track your antioxidant status over time.
Is the correlation with blood serum levels backed by research?
Yes. A clinical study led by Dr. Zoe Draelos, published in Food and Nutrition Journal with 97 participants, found a correlation with blood serum carotenoid levels of R² = 0.75–0.77.
Do I need the app to use Prysm iO?
The companion app is where your scores and trends live, so we recommend pairing your device with it to get the most out of tracking over time.
How much does Prysm iO cost?
Pricing starts around $375, though it may vary by market, promotion, and Brand Affiliate. Confirm current pricing with your representative before purchase.
Is there a money-back guarantee?
Nu Skin's Prysm iO Money-Back Guarantee refunds the price of one qualifying product — such as LifePak+ — if your Prysm Score shows no increase after 90–100 days of consistent use. It requires enrolling that product in a monthly subscription (ADR) within 7 days of your first scan and continuing for at least 3 consecutive months per the usage directions, and it applies to the qualifying product, not the Prysm iO device itself. Exact terms can vary by market — confirm the current Money-Back Guarantee terms before purchase.