stratum corneum

The stratum corneum is the outermost layer of our skin, acting as a protective barrier. It consists of dead skin cells that have flattened and keratin proteins that make it tough and water-resistant. This layer helps prevent infections, keeps moisture in, and shields underlying tissues from physical and environmental damage. It continually renews itself as old cells shed and are replaced by newer ones from deeper layers. The health and integrity of the stratum corneum are essential for overall skin health, hydration, and protection against external threats.