Prysm iO intelligent wellness device (Ireland)

Prysm iO is a handheld, non-invasive wellness device that reads your skin carotenoid level — your personal Prysm Score — in about 15 seconds, then tracks it over time in a connected app. You place a fingertip on the lens, the ring of lights circles once, and a single colour zone tells you roughly how the carotenoid-rich foods and supplements in your routine are showing up in your skin. It is a way to turn a long-term nutrition habit into something you can actually see, scan after scan, from your own bathroom or kitchen in Ireland. Prysm iO ships from the official Nu Skin warehouse, and you can buy it directly here — no Nu Skin membership or registration required. Every device is backed by a minimum two-year warranty.

It is important to be clear about what the score is and is not. The Prysm Score reflects skin carotenoids only — a recognised marker of how much carotenoid-rich fruit, veg and supplementation reaches your skin. It is not a medical reading, a blood-nutrient panel, or a diagnosis. Used as intended, it is a feedback tool for people who want objective, repeatable insight into one corner of their wellness routine.

Who Prysm iO Is For

✅ Best suited: People building a long-term antioxidant or "five-a-day" habit who want honest, repeatable feedback at home — supplement users, wellness-data enthusiasts, and households who like to track a number and watch it move over a season.

⚠️ Less suited: Anyone looking for a medical diagnosis, a blood-nutrient test, or a clinical health assessment. The Prysm Score measures skin carotenoids only and is not a substitute for professional medical guidance.

💡 Pairs well with: Carotenoid-rich nutrition such as Nu Skin LifePak+, Nu Skin JVi Juice, and Beauty Focus Collagen+ — products that deliver the kind of carotenoids Prysm iO is designed to read.

What Makes Prysm iO Different

For an Irish shopper, the honest comparison is that there is no real high-street equivalent to Prysm iO. The category around it falls into three very different buckets, and Prysm iO sits in a space of its own.

At-home blood test kits — the finger-prick nutrient panels posted out by providers such as the Irish-founded LetsGetChecked, or UK services like Medichecks and Thriva — do measure nutrition biomarkers, but they require a blood sample, ship to a lab, and return results in days rather than seconds. They are a periodic snapshot, not something you can repeat each morning. Wellness wearables — an Oura ring, an Apple Watch, a Fitbit — track movement, sleep and heart rate, but none of them say anything about your dietary antioxidant status. And the BioPhotonic Scanner, Nu Skin's original carotenoid-measuring instrument, lives in clinics and with distributors; it is not a device you own and use whenever you like.

Prysm iO is the consumer device that closes that gap: an optical, non-invasive fingertip reading of skin carotenoids, delivered in roughly 15 seconds, that you own outright and can repeat as often as you want, with every result logged in the app so you can watch the trend rather than guess at it.

How Spectral Rai Technology Works

Prysm iO runs on Spectral Rai Technology, which combines three things the original scanner did not bring together in a pocket-sized device:

Resonance Raman spectroscopy — the same optical principle behind the clinical BioPhotonic Scanner, in which specific wavelengths of light make carotenoid molecules in the skin "resonate" and scatter light in a measurable signature.

Hyperspectral absorption — rather than reading a single point, the device captures how the skin absorbs light across many wavelength bands, building a richer picture of carotenoid presence at the fingertip.

AI calibration — a machine-learning model, calibrated against Raman reference data, translates those optical signals into a single, repeatable Prysm Score so that readings stay consistent from one scan to the next.

The practical payoff was measured directly. In a 12-week study,* the supplement group showed a 43% average increase in skin carotenoid levels as read by the S3 BioPhotonic Scanner, and a 46% average increase as read by Prysm iO. Both non-invasive devices tracked consistent patterns of change over the same period — evidence that the handheld device reliably follows the same carotenoid trend the clinical scanner does. Carotenoid levels reflect dietary and supplement habits; they are not a measure of disease or treatment.

How It Compares

Dimension	Prysm iO	BioPhotonic Scanner (S3)	At-home blood test kit	Wellness wearable
Measurement method	Spectral Rai: resonance Raman + hyperspectral absorption + AI calibration	Raman spectroscopy	Finger-prick blood biomarker, lab-analysed	Motion, optical heart-rate, temperature sensors
What it measures	Skin carotenoid score (Prysm Score)	Skin carotenoid score	Blood nutrient / health panels	Activity, sleep, heart rate
Result time	~15 seconds	In-clinic, minutes	Days (lab turnaround)	Continuous / real-time
Invasiveness	Non-invasive fingertip	Non-invasive palm	Finger-prick blood sample	Non-invasive, worn
Personal ownership & repeat use	Owned device, scan any time	Clinic / distributor only	Per-kit consumable	Owned device
App history & tracking	Yes — Prysm Score history	No personal app	Provider portal, per test	Yes

Comparison based on publicly available product and category information as of June 2026. Devices differ in purpose; this table is for orientation, not equivalence.

How Irish Customers Are Using It

The most common pattern we see in Ireland is seasonal. Through the low-daylight months from November to February — short days, more time indoors, and a fresh-veg routine that tends to slip toward heavier comfort food — people use Prysm iO to check whether the winter dip in their five-a-day is actually showing up in their skin carotenoids, then watch the number recover as lighter, more colourful eating returns in spring.

A practical way to start is to take a baseline scan, keep your scanning conditions consistent (same finger, clean and dry, lens fully covered), and then re-scan on a regular cadence rather than several times a day. Many households share a single device, each person tracking their own history in the app. Pairing scans with a steady carotenoid-rich routine — a daily LifePak+, a glass of JVi, or Beauty Focus Collagen+ — is the clearest way to see the trend move.

One honest expectation to set: carotenoid changes build over weeks, not overnight. The 12-week study above is the realistic timescale for a meaningful shift, and consistency — both in diet and in how you scan — matters more than any single reading.

Works With

Nu Skin LifePak+ — Nu Skin's comprehensive daily nutritional system, formulated with carotenoids and antioxidants. It is exactly the kind of carotenoid-rich routine whose effect Prysm iO is designed to reflect over time.

Nu Skin JVi Juice — a fruit-and-vegetable juice blend rich in carotenoids (the EU counterpart to the g3 line). An easy daily addition for anyone wanting to nudge their Prysm Score upward.

Beauty Focus Collagen+ — a beauty supplement whose Collagen Support Complex includes lutein, a carotenoid that accumulates in the skin. A direct carotenoid contributor that can be reflected in your Prysm Score over time.

What's included

• 1 Prysm iO Device

• 1 Prysm iO Stand

• 1 Travel Case

• 1 Calibration Disc

• 1 Microfiber Cleaning Cloth

• 1 USB-C Charging Cable

Device & app features

Min. 2-year warranty (1)

IoT-connected app

15-second skin carotenoid scan

• A smart, waterproof, rechargeable handheld device that pairs with the Prysm iO app.

• Connect to the Prysm iO app to track your Prysm Score over time, review your full scan history, and receive product recommendations based on your data.

How to use it

1 — Turn on the device by pressing the power button.

2 — Place the pad of your index finger over the lens. The scan will begin automatically.

3 — The lights will circle for 15 seconds while the scan is in progress. When complete, a single flashing light will show your Prysm Score colour zone.

4 — After 10 seconds, the lights will turn off and the device will be ready for the next scan.

Note: If no scan is initiated within 1 minute, the device will automatically power off. For additional features and guidance, download the Nu Skin Prysm iO app. It will walk you through setup and show you how to pair your device.

Recommendations

Place Prysm iO on a flat, level surface before scanning. Keep your finger in place throughout the scan for accurate results. Keep the device away from water and moisture. Make sure your finger is clean and dry. Align the centre of your fingertip with the centre of the scanning lens as accurately as possible. Make sure your finger fully covers the lens to block any external light during the scan. Remain still during the 15-second scan.

Frequently Asked Questions

Do I need to register as a Nu Skin member to buy Prysm iO?

No. You can buy Prysm iO directly from this page as a regular customer — no Nu Skin membership, distributor sign-up, or registration required. It ships from the official Nu Skin warehouse.

What does the Prysm Score actually measure?

It measures your skin carotenoid level, expressed as a single colour-zoned score. Carotenoids are pigments that accumulate in skin from a carotenoid-rich diet and supplements, so the score reflects that side of your nutrition routine. It is not a medical metric and does not assess overall health.

What are the differences between the BioPhotonic Scanner and Prysm iO?

Prysm iO is smaller, fits in the palm of your hand, and delivers results in just 15 seconds. It is a connected device with an app that lets you track your Prysm Score over time and receive product recommendations. Unlike the BioPhotonic Scanner, Prysm iO is available for personal purchase and ownership. They use different technologies: the BioPhotonic Scanner uses Raman Spectroscopy, while Prysm iO uses Spectral Rai technology, which combines resonance Raman spectroscopy and hyperspectral absorption guided by AI calibration.

What is Spectral Rai Technology?

The Spectral Rai technology used in Prysm iO measures light absorption in the skin and applies machine-learning calibration referencing Raman technology to generate your Prysm Score.

Which products will actually show up in my Prysm Score?

The Prysm Score tracks skin carotenoids, so only carotenoid-source products move it. Carotenoid-rich nutrition such as LifePak+, JVi Juice, and Beauty Focus Collagen+ (which supplies the carotenoid lutein) can be reflected as a higher score over time. Antioxidant supplements that contain no carotenoids — a green-tea catechin product such as Pharmanex Tegreen, for example — support your routine in other ways but will not raise your carotenoid score. As with diet, any change builds gradually rather than instantly.

What are carotenoids?

Carotenoids encompass a vast family of chemical components. The best known are Alpha-carotene, Beta-carotene, Lutein, Lycopene, Zeaxanthin, and Astaxanthin. They are yellow, orange, and red organic pigments produced by plants and algae, as well as several bacteria, archaea, and fungi. Carotenoids give the characteristic colour to pumpkins, carrots, tomatoes, flamingos, salmon, shrimp, and more.

Sources & References

• Major R., Hester S.N., Gibb T., Riggs M., Ferguson S., Fisk N., Knaggs H. (2025). Nu Skin in-house randomized, double-blind, placebo-controlled study on skin carotenoid response (12 weeks). See study footnote below.

• Nu Skin Prysm iO product specification and user manual (device features, warranty, in-box contents).

• Mayne S.T., Cartmel B., Scarmo S., et al. "Resonance Raman spectroscopic evaluation of skin carotenoids as a biomarker of carotenoid status." Archives of Biochemistry and Biophysics, 2013. (Background on skin carotenoids as a dietary biomarker.)

• Editorial review: NuBest Skin Editorial Team, June 2026 — pricing and availability verified.

Important Information

Prysm iO is a wellness device, not a dietary supplement, and is not a medical device. The following notices apply.

Prysm iO is not a medical device and should not be used as a substitute for professional medical guidance. It is not intended to diagnose, cure, mitigate, treat, or prevent any disease or medical condition, or to affect the structure and function of any part of the body. Always consult your healthcare provider before making decisions related to your health or wellness. Please see the Prysm iO user's manual for a full list of safety instructions and warnings.

* Nu Skin conducted an in-house, randomized, double-blind, placebo-controlled study. A total of 46 healthy adults aged 20–65 completed the study. Subjects received either a supplement containing vitamins, minerals, carotenoids, and botanicals (n=29) or a placebo (n=17) and were instructed to take the product twice daily with meals for 12 weeks. Skin carotenoid levels were measured throughout the study using the S3 BioPhotonic Scanner (palm) and a prototype of the Prysm iO device (fingertip). After 12 weeks, subjects in the supplement group showed significant increases in carotenoid levels as captured by both devices. Major R., Hester, S.N., Gibb T., Riggs M., Ferguson S., Fisk N., Knaggs H. (2025).

(1) Any commercial warranty offered by Nu Skin does not affect your legal rights as a consumer for non-conformity of the product as provided by local law.

Data & privacy (EU / Ireland)

The Prysm iO device and the Prysm App (collectively, "Prysm") collect data generated during each scan. This includes your scan score and details about your scanning routines and habits, app settings, and preferences.

The connected product generates data only when actively in use. Continuous or real-time data generation is not supported.

Data is currently stored only remotely. Beginning in April 2026, data may be stored on the device for the period of time between when the scan is performed and when the device is next connected to the Prysm App.

Data associated with the device will be retained for the shorter of the following time periods: (1) for so long as an account is active, (2) until deleted at the request of the connected device owner, or (3) ten years. Data may be anonymized and kept for a longer period of time.

Users may request access (or erasure) of their data by following the [Data Subject Rights] [Privacy Center] link on our website and in the Prysm App. Users wishing to share their data with a third party can submit such a request through the link mentioned above. Users reaching out through a third party will be asked to verify their request through email by responding to an email once the request has been started by the third party. Failure to reply will result in denial of the request.

Please review the applicable Privacy Notice and Terms of Use.

The data holder is Nu Skin International, Inc. but your data may be accessed within Nu Skin. This means that we may share your data across the Nu Skin group of companies, which includes our ultimate parent company and its affiliates and subsidiaries. A list of the Nu Skin companies can be found in the Privacy Notice.

Users have the right to lodge a complaint with the competent authority if they believe their rights under these terms have been infringed.

The above terms will remain in effect until modified. Nu Skin reserves the right to update or revise the content of this notice at any time. No update will reduce the rights of Users previously granted.

NuBest Skin is an Independent Nu Skin Brand Affiliate. This website is independently operated and is not produced, endorsed, or approved by Nu Skin Enterprises, Inc.