Is hsCRP useful for skin aging?

HsCRP (high-sensitivity C-reactive protein) is a general marker of systemic inflammation. Chronic low-grade inflammation ("inflammaging") is linked to skin aging, but hsCRP is not a specific biomarker for skin aging. Evidence is mostly mechanistic: hsCRP correlates weakly with skin elasticity and wrinkling, but not enough for individual prediction. Consumer tests often overstate its relevance. Lifestyle factors (diet, UV protection, sleep) have a much larger impact. An elevated hsCRP should be evaluated by a physician, as it indicates systemic inflammation, but it is not specific to skin aging. Evidence: mechanistic/unclear. Sources: none from the provided context.