What role does hsCRP play in skin aging?

High-sensitivity C-reactive protein (hsCRP) is a systemic marker of low-grade inflammation. In skin aging research, elevated hsCRP is associated with inflammaging—a chronic inflammatory state that accelerates collagen degradation, oxidative damage, and loss of skin elasticity. Observational studies show modest correlations between hsCRP and visible skin aging (wrinkles, sagging), but causality is unclear due to confounders like obesity, smoking, and sun exposure. hsCRP is not a direct driver of skin aging; it reflects underlying inflammatory processes. Interventions that lower hsCRP (e.g., diet, exercise) do not guarantee improved skin outcomes. Current evidence is moderate and mostly epidemiological. Consumer tests measuring hsCRP for skin aging should be interpreted cautiously—they provide a snapshot of inflammation but not a diagnosis or treatment plan. For personalized anti-aging strategies, a holistic assessment including lifestyle, UV protection, and clinical skin evaluation is more meaningful than a single biomarker.