
30/06/2025
THE FUNCTION OF THE SKIN BARRIER
The skin barrier, also known as the stratum corneum, is the outermost layer of the skin.
Its critical roles include:
🌿 Protecting against pathogens, chemicals, pollution, and mechanical damage .
💧 Regulating hydration, by preventing excessive water loss and maintaining skin moisture .
🔒 Controlling permeability, allowing selective absorption while keeping toxins and allergens out .
🛡️ Contributing to immune defense, by supporting mild inflammation and inhibiting microbial invasion .