Is Cortisol useful for Haut?

Cortisol is a stress hormone that influences skin inflammation and wound healing. Acutely, it may support barrier function, but chronically elevated levels are linked to skin aging, acne, and eczema. Direct cortisol measurement (e.g., in saliva or hair) for skin guidance has limited evidence – mostly mechanistic. A consumer test like MyBody-X might include cortisol as a biomarker, but its practical utility for skincare decisions is unclear. Without clinical context or a doctor's interpretation, the result is not actionable. Focus on stress reduction and dermatological care instead.