Understanding the biological processes of skin aging: collagen degradation, reduced cell turnover, and structural changes. This page is part of the Skin Health hub on Evidence Before Claims. Content is for educational purposes only and is reviewed against peer-reviewed studies, FDA labeling, and current clinical guidelines. It does not provide diagnosis, treatment, or individua
Reviewed by Amelia Ross, MD (illustrative reviewer) — MD, Dermatology. Last reviewed: May 2026. Educational content only; not medical advice.