Recognized by
Prysm iO on TikTok
Real scans, real scores, from real people.
Stop guessing
See what your body absorbs.
One 15-second fingertip scan reveals your skin's carotenoid antioxidant level — no needles, no lab, no waiting.
Spectral Rai™ technology
70,000 measurements. One number.
Each scan captures more than 70,000 hyperspectral readings — 6,000 every second — and an AI algorithm distills them into your Prysm Score.
20+ years of science
Backed by 21 million scans.
Two decades of carotenoid research and one of the world's largest antioxidant databases — 21M+ scans across nearly 50 countries.
Measure. Improve. Repeat.
Watch your number move.
Track your score over time and see your habits, diet, and Prysm Certified® supplements make a measurable difference.
Everything Prysm iO sees
Intelligent wellness, at a glance
Hyperspectral precision — small enough to fit in your palm.
Truly intelligent wellness, made simple.
Hyperspectral precision you can hold.
Scan time
15s
fingertip, non-invasive
Database
21M+
antioxidant scans worldwide
Correlation
R²≈0.76
to blood-serum carotenoids
Non-invasive
no needles, no blood, no lab
AI-powered score
raw spectra become your Prysm Score
Track over time
watch your number move, scan after scan
Guaranteed to raise your score
paired with Prysm Certified® products
What it measures
The antioxidants it tracks
Your Prysm score reflects the carotenoids your body has actually absorbed — the antioxidants that defend your cells against oxidative stress.
Beta-Carotene
from carrots & sweet potato — converts to vitamin A
Lycopene
from tomatoes & watermelon — cellular defense
Lutein
from leafy greens — eye & skin protection
Zeaxanthin
from corn & dark greens — blue-light defense
Alpha-Carotene
from squash & pumpkin — antioxidant support
Beta-Cryptoxanthin
from oranges & papaya — immune support
Skin carotenoid level is a validated marker of antioxidant status.
How it works
Your number in three steps
No needles, no lab visit. Just press, learn, and improve.
Scan
Rest a fingertip on the sensor. Your reading takes less than 15 seconds — completely painless.
Learn
Your Prysm score appears instantly in the app, translated into clear, AI-powered guidance.
Improve
Build habits that raise your score, then watch your progress climb scan after scan.
The science
Stop guessing. Start seeing.
Prysm iO reads the carotenoids in your skin — a validated marker of how well your body absorbs antioxidants and defends against oxidative stress.
Validated against the gold-standard BioPhotonic Scanner S3
The companion app
Your score, always with you.
Every scan becomes a Prysm Score, a trend line, and personalized guidance you can act on the same day.
Instant Prysm Score after every scan
Trends that show your progress over time
AI-powered, personalized recommendations
Considered, inside and out
Designed down to the detail.
reads carotenoids through your fingertip
lights up your color score
one press to scan
rechargeable, 5V
The details
Tech specs
Everything under the hood of Prysm iO.
Measurement
- Technology
- Spectral Rai™ optical (Raman-calibrated ML)
- Measurements per scan
- 70,000+ (6,000+/sec)
- Scan time
- ~15 seconds
- Serum correlation
- R²≈0.75–0.77
Power
- Battery
- Li-ion 3.7 V · 360 mAh
- Charging
- USB-C (5 V / 1 A)
Connectivity
- Wireless
- Bluetooth Low Energy
- App
- Nu Skin Prysm iO (iOS / Android)
- Compatibility
- iOS 15.1+ · current Android
Build
- Ingress protection
- IP54
- Operating temp
- 50–95°F (10–35°C)
In the box
- Included
- Device · stand · travel case · calibration disc · microfiber cloth · USB-C cable · quick-start guide
Reviews
Real scores, real stories
What people discovered about their antioxidant health.
Finally, actual proof
I always wondered if my supplements were doing anything. My first scan was eye-opening — and watching the number climb has kept me consistent.
15 seconds, no needles
Scanned my whole family at dinner. Takes seconds and the app explains exactly what the number means.
Changed how I eat
Seeing my score climb when I add more colorful veggies is weirdly motivating. It actually works.
Worth it for the data
Pricey, but I've spent way more on supplements I wasn't sure were doing anything. Now I actually know.
Took the guesswork out
The trends over time are the best part. My whole wellness routine finally feels intentional.
Blew past my expectations
I'm a data guy. Having actual numbers instead of hoping my greens are working is a total game changer.
Best purchase of the year
My score jumped 200 points in six weeks after I added LifePak. Undeniable proof my routine is actually working.
The app is genuinely helpful
Not just a score — actual guidance on what to eat more of. My kids ask to be scanned before dinner now.
Learning curve, but worth it
Took a couple weeks to interpret my readings well. The app got better with an update and now it's dialed in.
Feels like a check-up at home
15 seconds and I know what my body is actually absorbing. My doctor was impressed when I brought in my trend charts.
The wellness reality check I needed
I thought I was doing great. My first scan said otherwise. Six weeks of small changes and my number is up 40%.
No needles is the whole thing
I hate needles. Getting real biomarker data without a lab visit is honestly life-changing.
Prysm, answered
Know your number
Everything you need before your first scan — and we're a message away if anything's missing.
How does the scan actually work?
Rest a fingertip on the sensor. Prysm iO uses non-invasive optical scanning to read the carotenoids in your skin — a validated marker of how well your body is absorbing antioxidants. In about 15 seconds, your personal Prysm score appears in the app.
How accurate is it, really?
In peer-reviewed testing, Prysm iO's readings were statistically equivalent to the gold-standard BioPhotonic Scanner S3, with R²≈0.76 correlation to blood-serum carotenoid levels. It's backed by a database of over 21 million scans from nearly 50 countries — one of the largest antioxidant datasets in the world.
How often should I scan to see progress?
Once a week is the sweet spot. Carotenoids build up gradually, so weekly trends tell a much clearer story than single readings. Most customers see their score climb noticeably within 4–8 weeks of consistent habits.
Do I need a subscription or the app to use it?
The Prysm iO app is free (iOS and Android) and no subscription is required. The app stores every scan, shows your trend line, and turns your score into simple, AI-powered guidance you can act on the same day.
Is it safe? Anything I should know before scanning?
Yes — completely non-invasive, no needles, no blood, no radiation. It's safe for daily use and safe for the whole family. No fasting, no prep, no side effects.
Does it replace bloodwork with my doctor?
No. Prysm iO is a wellness tool — it complements a healthy lifestyle and helps you track antioxidant status at home, but it doesn't diagnose, treat, or replace medical care. Bring your trend charts to your next appointment if you want — your doctor will love the data.
Complete the lineup
Hand-picked pairings that raise your score — and your glow.
