The Science Behind the Prysm iO – A New Way to Understand Your Antioxidant Health

As someone who has spent many years working with skin, energy, and cellular health, I’m always fascinated by technologies that allow us to see what is happening inside the body in a measurable way.

One device that has genuinely impressed me is the Nu Skin Prysm iO.

At first glance it looks like a small, simple scanner. But behind this elegant device is over two decades of scientific research into antioxidants, skin health and lifestyle biomarkers.

What makes Prysm iO so interesting is that it allows us to measure something that was previously very difficult to track in everyday life — your antioxidant status.

Why Antioxidants Matter for Health and Skin

Our bodies are constantly exposed to something called oxidative stress.

This is caused by things such as:

• Poor diet

• Environmental pollution

• UV exposure

• Lack of sleep

• Stress

• Smoking

• Processed foods

Oxidative stress accelerates cellular ageing, affects the skin, and can impact overall health.

This is where antioxidants come in.

Antioxidants help neutralise oxidative stress and protect our cells from damage. One of the most important antioxidant groups in the body are carotenoids, which come mainly from colourful plant foods such as vegetables and fruits. 

Higher levels of carotenoids in the body are associated with better nutrition, healthier lifestyle habits and improved antioxidant protection.

What Exactly Does Prysm iO Measure?

Prysm iO measures skin carotenoids.

Carotenoids accumulate in the skin when we consume foods rich in antioxidants. Because of this, the skin becomes a very reliable place to measure long-term antioxidant status.

The device uses specific wavelengths of light and advanced algorithms to analyse the carotenoid levels in your skin and generate what is known as your Prysm Score. 

Your score is displayed using a simple colour scale that makes it very easy to understand:

• Red – low antioxidant protection

• Orange – below average

• Yellow – moderate

• Green – good

• Blue and Purple – very high antioxidant levels

The higher the score, the stronger your antioxidant defence.

The Science Behind the Technology

The technology behind Prysm iO is not new.

It is built on the same scientific principles used in the BioPhotonic Scanner, which has been used for more than 20 years and has generated over 21 million antioxidant scans worldwide. 

This enormous global database has helped researchers understand how antioxidant levels relate to:

• Diet

• Lifestyle habits

• Exercise

• Sleep patterns

• Skin health

The Prysm iO uses this knowledge alongside machine learning algorithms to deliver an instant, personalised antioxidant score.

What Research Has Shown

Clinical research exploring Prysm iO has shown clear correlations between antioxidant levels and everyday lifestyle choices.

Higher scores were associated with:

• Diets rich in fruits, vegetables, whole grains and fish

• Regular exercise

• Better sleep patterns

• Lower body fat levels

Interestingly, higher antioxidant scores were also associated with better skin attributes, including:

• Smoother skin

• Better hydration

• More even skin tone

• Fewer visible wrinkles

This highlights something I often talk about with clients:

True skin health always reflects what is happening inside the body.

Why I Find This Technology So Powerful

One of the biggest challenges in health and wellness is that people often cannot see the impact of their lifestyle choices.

With Prysm iO, you can.

It creates a real, measurable feedback loop.

You can improve your diet, increase your vegetable intake, optimise your sleep, support your body with targeted nutrition — and then actually see your antioxidant levels change over time.

This is incredibly motivating.

A New Era of Personalised Wellness

For me, the Prysm iO represents something very exciting.

It bridges the gap between nutrition, skin health, and lifestyle science.

Instead of guessing whether our habits are supporting our health, we can now measure, track and improve them in a very tangible way.

And sometimes, a small device can reveal some very powerful insights about how we live.

Final Thoughts

Technology like the Prysm iO reminds us that health is not just about what we put on the skin — it’s also about how we nourish the body and care for our cells.

When we support our antioxidant defences, we support everything from cellular protection to healthy, vibrant skin.

And that’s something I think is truly worth measuring.

Shop the limited edition Nu Skin Prysm io with the metal stand 

PRYSM iO FAQ's

What does the Prysm iO measure?

The Nu Skin Prysm iO measures carotenoids in the skin. Carotenoids are powerful antioxidants that help protect the body from oxidative stress caused by diet, lifestyle habits, UV exposure, and environmental factors.

How does the Prysm iO scanner work?

Prysm iO uses specific wavelengths of light to scan the skin and detect carotenoid levels. The device then generates a Prysm Score that reflects your antioxidant status and helps track improvements in diet and lifestyle.

What does a high Prysm Score mean?

A higher Prysm Score indicates stronger antioxidant protection in the body. This is often associated with healthier lifestyle habits such as eating more fruits and vegetables, regular exercise, and better sleep patterns.