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In this final episode of 2025, I explore a question that sits at the center of modern longevity science and skincare. What matters more for skin aging, chronological age or biological age?

Chronological age is fixed. It is the number in our passport. Biological age is different. It reflects how our cells function, how fast our internal clocks are ticking, and how our lifestyle, stress, inflammation, circulation and skincare choices shape the skin over time. I explain why biological age can differ dramatically between people of the same chronological age, how epigenetics influence skin aging, and why many aggressive anti-aging strategies may actually accelerate biological aging instead of slowing it down. This conversation sets the foundation for what is coming in 2026. A deeper focus on skin longevity, function, resilience and healthification over short-term beautification.

Learn more from the previous episodes:

Smart Skincare, Not Quick Fixes: Biohacking Explained

Understanding Wrinkles: Types, Causes & What Actually Works

Understanding Acne: Myths vs. Science

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