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Story summary
- Dr. Emma Craythorne says the skin barrier is not fully watertight, and maintaining about 40% humidity keeps skin comfortable.
- When humidity falls, the skin loses moisture, causing dryness and inflammation.
- Central heating and cold outdoor air worsen the problem, especially for people with eczema or rosacea.
- Craythorne advises keeping heating cooler, using a humidifier, and selecting gentle, fragrance-free moisturizers with occlusives, ceramides, and glycerin to maintain hydration.
