NAD⁺ and Skincare: The Cellular Secret to Youthful, Resilient Skin

NAD⁺, or nicotinamide adenine dinucleotide, is a molecule that exists in every single one of your cells. Think of it as a power source. Without it, your cells can’t do the most basic things they’re designed to do, like turning nutrients into energy, repairing DNA, or responding to stress. That includes skin cells. When NAD⁺ is available, your skin runs like a well-oiled machine. When it’s low, the whole system slows down. Although NAD⁺ is closely linked to vitamin B3, they’re not the same. Vitamin B3 is the raw ingredient, NAD⁺ is what your body builds from it. You can think of B3 as the fuel and NAD⁺ as the spark that makes everything work.

In the skin, this translates to stronger daily defenses and faster recovery. NAD⁺ supports DNA repair, helps maintain collagen production, and strengthens the skin’s barrier function. It gives your cells the resources they need to regenerate and protect themselves, which contributes to a visibly smoother, firmer, and more resilient complexion.

However, your body’s natural supply of NAD⁺ doesn’t stay constant. Levels begin to decline in your twenties, and by your fifties, you may have lost up to 50 percent. This gradual depletion affects how well your skin repairs itself, handles oxidative stress, and maintains its structural integrity. External factors like sun exposure, poor sleep, alcohol, and pollution can speed up the loss, placing even more pressure on your skin’s ability to stay healthy over time.

Yes. As we age, the natural production of NAD⁺ slows down. But by taking targeted supplements, you can support your body’s ability to rebuild and maintain this essential molecule. Clinical studies in humans have shown a measurable increase in NAD⁺ levels in the blood after just a few weeks of consistent use.

- Improved physical endurance (walking speed, grip strength)

- Better energy metabolism and reduced feelings of fatigue

- Positive effects on cardiovascular markers like blood pressure and arterial stiffness

- Enhanced insulin sensitivity and better glucose regulation

- Reduced biological age based on blood biomarkers in some studies

- Support for mitochondrial health, your cells’ energy factories

- Potential improvements in cognitive function and inflammation regulation

Les recherches indiquent que ces suppléments sont bien tolérés chez les adultes en bonne santé. Les effets secondaires sont rares et généralement légers, comme des ballonnements ou de légères nausées.

Cependant, leur utilisation n’a pas été suffisamment étudiée chez les personnes atteintes d’arythmies, de cancer, ou chez les femmes enceintes ou qui allaitent. Si l’une de ces situations s’applique à vous, consultez un professionnel ou une professionnelle de la santé avant d’envisager une supplémentation.