Cortisol and the Skin
Cortisol and the Skin — a steroid hormone released by the adrenal glands during stress that influences the skin by modulating inflammation, barrier function, and oil production. When chronically elevated, it can impair the skin barrier, slow wound healing, and worsen conditions such as acne and eczema.
Key points
- Cortisol is the body's primary stress hormone and follows a daily rhythm, peaking in the morning and declining at night.
- Persistently high cortisol can degrade collagen and weaken the skin barrier, increasing water loss and sensitivity.
- Elevated cortisol is associated with increased sebum output and may contribute to stress-related acne flares.
- Poor sleep and chronic stress raise cortisol levels, which is one reason skin often looks dull or reactive during stressful periods.
Frequently asked
Can stress really affect how my skin looks?
Yes; sustained stress raises cortisol, which can weaken the skin barrier, boost oil production, and aggravate inflammatory conditions, making skin appear duller or more reactive.
Does lowering cortisol improve skin?
Supporting healthy cortisol rhythms through adequate sleep and stress management may help skin resilience, though skin health depends on many factors and results vary between individuals.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
